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A Comparative Analysis Of Various Simulation Software For Grid-Connected Residential Building: A Case Study At Jeddah, Saudi Arabia, Majid T. Amin Mar 2025

A Comparative Analysis Of Various Simulation Software For Grid-Connected Residential Building: A Case Study At Jeddah, Saudi Arabia, Majid T. Amin

Yanbu Journal of Engineering and Science

Saudi Arabia receives significant energy daily from solar radiation, making it one of the best places to use solar energy to meet its energy needs. Grid connected Photovoltaic (PV) systems provide the electrical energy available from the solar radiation into the grid. Different simulation tools are currently available used to assess the performance of solar PV systems. The present study was conducted to design and evaluate the performance of 15 kW grid-connected solar PV system under climatic conditions of in Jeddah, Saudi Arabia. Two simulation models, Helioscope and PVsyst were used in the analysis and the results were then compared. …

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Comparative Analysis Of Water Cooler For Different Working Fluids: Energy And Exergy Approach, Majdi T. Amin Mar 2025

Comparative Analysis Of Water Cooler For Different Working Fluids: Energy And Exergy Approach, Majdi T. Amin

Yanbu Journal of Engineering and Science

Enhancing the performance of traditional vapor compression cooling cycles is an important aspect in the quest to minimize global energy consumption, to own sustainable energy systems soon, and to preserve the environment. This study performed a comparative analysis of the performance of a water cooler with different working fluids to replace R143a and improve system performance. A mathematical model derived from energy and exergy analysis is developed for the evaluation of the effect of operating conditions on the system COP, exergetic losses, and exergetic efficiency. The evaluation has been conducted for evaporation and condensation temperatures ranging between -30°C to 15°C …

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Hygrothermal Performance Of Roofs With High Initial Construction Moisture Subjected To Hot Climate, Hamed H. Saber Mar 2025

Hygrothermal Performance Of Roofs With High Initial Construction Moisture Subjected To Hot Climate, Hamed H. Saber

Yanbu Journal of Engineering and Science

Moisture accumulation in the building components/assemblies that form building envelopes can lead to material deterioration and moisture related issues such as mould growth. As a part of the building envelope, this study focusses on assessing the moisture performance and energy performance (i.e., hygrothermal performance) of roofing systems. As roofs can be built with high initial construction moisture, numerical simulations were conducted with and without high initial construction moisture in order to investigate: (a) the hygrothermal performance of cool and black roofs having material layer with high initial construction moisture content, (b) the time needed so that the moisture content reaches …

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Hough Transform Based Deep Belief Network And Improved Homomorphic Encryption For Cloud Security Based Intrusion Discovery, Sivakumar Ramu, Ramakrishnan Ramamoorthy, Rameshkumar Ranganathan Mar 2025

Hough Transform Based Deep Belief Network And Improved Homomorphic Encryption For Cloud Security Based Intrusion Discovery, Sivakumar Ramu, Ramakrishnan Ramamoorthy, Rameshkumar Ranganathan

Yanbu Journal of Engineering and Science

The enlarge development in information technology is cloud computing, which offers minimized infrastructure cost, lower maintenance, greater flexibility and scalability. Nowadays, the network security plays vital role in enterprises and organizations. The influence vulnerabilities were occurred due to attackers based on network configuration. Because of cloud and IoT growth, enlarge amount of data obtained from IoT sensor and devices are transmitted to cloud data centers. Several security issues like focused web servers in the cloud and information collection mishandling are faced by storage and cloud-based computing when offering us considerable convenience. For that reason, this article proposes a deep learning-based …

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Dc Motor Control Using Model Reference Adaptive Control, Mohamed I. Mosaad Mar 2025

Dc Motor Control Using Model Reference Adaptive Control, Mohamed I. Mosaad

Yanbu Journal of Engineering and Science

Despite having higher maintenance costs than AC motors, DC motors had been widely employed in the industry due to their outstanding speed control capabilities. This employment increased due to the DC output of some renewable sources recently. This article introduces the speed control of DC motors using model reference adaptive control (MRAC). This control is achieved through regulating the armature voltage at different load changes. A comparison between the proposed adaptive controller and optimized PI controller using the elephant herding optimization (EHO) is presented. The PI controller parameters were optimality adjusted to minimize the integral absolute error, minimum overshoot, and …

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Speed Orientation Of Combined Induction Motor Renewable Energy System Via Firefly Approach, E.S. Ali Mar 2025

Speed Orientation Of Combined Induction Motor Renewable Energy System Via Firefly Approach, E.S. Ali

Yanbu Journal of Engineering and Science

This article introduces the layout of a traditional (PI) Proportional Integral controller via (FA) Firefly Approach to adjust the speed of the commonly used motor; (IM) Induction Motor; supplied by (WT) Wind Turbine as a one of renewable energy resources. WT acts as a main mover to a joined (DC) Direct Current source. DC/AC inverter is utilized to obtain a 3 phase system from the product of DC. generator. The developed layout process of the speed controller is formed as a time domain optimization task. FA is involved to seek optimum elements of the controller by reducing the suggested objective …

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Modeling And Simulation Study Of A Novel Bat Sand Vertical Axial-Wind Turbine, Saeed Almalowi, Majdi T. Amin Mar 2025

Modeling And Simulation Study Of A Novel Bat Sand Vertical Axial-Wind Turbine, Saeed Almalowi, Majdi T. Amin

Yanbu Journal of Engineering and Science

A wind turbine with a vertical axis offers a high potential for energy production. Numerous operational and design aspects, such as aspect ratio, blade number, climatic conditions, dust effect, rain impact, humidity, and other geometrical forms, affect the performance of vertical axial-wind turbines. In this work, CFD was used to analyze the flow characteristics across the blades of a unique v ertical-axis wind turbine. The tests were conducted at various airflow velocities, including 2 m/s, 4 m/s, 6 m/s, and 8 m/s. Utilizing numerical simulation, the pressure contours and streamlines were drawn. Due to the direct influence of the dynamic …

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Accurate Mathematical Modeling Of Electronic Load Harmonics Using Machine Learning Software, Ahmad Al-Subhi Mar 2025

Accurate Mathematical Modeling Of Electronic Load Harmonics Using Machine Learning Software, Ahmad Al-Subhi

Yanbu Journal of Engineering and Science

This paper presents accurate mathematical models for several power system harmonics problems using an efficient machine learning tool, Eureqa. Three previously published research papers that included actual field measurements have been chosen to compare and assess the harmonics mathematical models presented in this paper. Following that, mathematical models of the output parameters as functions of the input parameters have been developed based on these data. For all these different research works and experiments, a total of 17 mathematical models have been built using basic curve fitting tools. Most of these proposed models couldn't fit the experimental data appropriately. Considerable error …

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A New Study Of Relativistic And Nonrelativistic For New Modified Yukawa Potential Via The Bsm In The Framework Of Noncommutative Quantum Mechanics Symmetries: An Application To Heavy-Light Mesons Systems, Abdelmadjid Maireche Mar 2025

A New Study Of Relativistic And Nonrelativistic For New Modified Yukawa Potential Via The Bsm In The Framework Of Noncommutative Quantum Mechanics Symmetries: An Application To Heavy-Light Mesons Systems, Abdelmadjid Maireche

Yanbu Journal of Engineering and Science

In this article, the deformed Dirac equation was solved with a new modified Yukawa potential within three tensor interactions (Coulomb-like, Yukawa-like, and Hulthén-type potentials) (NMYTTIs). This study is scrutinized by taking into consideration the noncommutative space-space effect within the relativistic and nonrelativistic regimes using the parametric of Bopp’s shift method and standard perturbation theory with the help of an approximation to the centrifugal term. In the framework of the spin and pseudospin (p-spin) symmetry, we obtain the global new energy eigenvalue which equals the energy eigenvalue in usual relativistic QM under the new modified Yukawa potential plus the corrected of …

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Unified Power Flow Controller Control Strategies For Power Flow, Fahd Banakhr Mar 2025

Unified Power Flow Controller Control Strategies For Power Flow, Fahd Banakhr

Yanbu Journal of Engineering and Science

In order to address power flow control issues, this study introduces the use of Unified Power Flow Controller (UPFC) models. These models are based on regulating the variables influencing the transmission line’s power flow, and they are capable of controlling the bus voltage, the line’s actual and reactive power, all at once and independently. The idea behind the UPFC technique proposed in this paper is to provide the unique functional capability of independently controlling both the real and reactive power flow in the line. The in-phase component of the series injected voltage dominates the reactive power while the quadrature component …

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Empirical Model For Moon Sighting, Gamal Hafez Mar 2025

Empirical Model For Moon Sighting, Gamal Hafez

Yanbu Journal of Engineering and Science

An empirical model is developed to precisely identify the new crescent visibility of each Hijri month. The model is based on the actual real measurements of the moon motion. The model used the sinusoidal behaviour to model the relative motion of the lunar with respect to the earth. The model stability is achieved by the exact matching between the sine wave and the phases of the moon crescent, with respect to an observer from the earth. The accuracy of the model is granted by using the most accurate measurements for the motion of the moon. The model is applied to …

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Failure Analyses Of Tower Crane Using Fem And Theoretical Studies, Mofareh Hassan Ghazwani, A. H. Alnujaie, M. L. Chandravanshi, Deepak Deepak, Chitransh Singh Mar 2025

Failure Analyses Of Tower Crane Using Fem And Theoretical Studies, Mofareh Hassan Ghazwani, A. H. Alnujaie, M. L. Chandravanshi, Deepak Deepak, Chitransh Singh

Yanbu Journal of Engineering and Science

This paper describes the technique to explicitly increase the tower crane’s stability during cyclones through modal analysis in FEM. For this, modal analyses of a boom, mast, and tower crane are carried out individually to minimize the tuning effect of natural frequencies. The study explains the methodology to increase the stiffness using bracings in the mast expressed in modal parameters. In FEM analysis, bracings are applied in fixed support along the vertical mast of the tower crane. For this purpose, a 1/10 scale model of “Potain MCi85 A/B” tower crane was modelled in Nx-Unigraphics. Theoretical analysis of the boom’s natural …

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Transfer Learning Approach For Classification Of Widely Used Spices, Arunachalam Sundaram, Abdullahi Masud, Ali Almarhoon, Bhaskarjit Sarmah Mar 2025

Transfer Learning Approach For Classification Of Widely Used Spices, Arunachalam Sundaram, Abdullahi Masud, Ali Almarhoon, Bhaskarjit Sarmah

Yanbu Journal of Engineering and Science

People around the world relish variety of food that are flavourful. Spices add flavours to the food without adding any fat or calories. People have used spices for many centuries and are an integral part of our food. In addition to aroma, spices also have anti-bacterial, anti-inflammatory properties and other health-promoting properties. Recognizing spices from images is a challenging problem for a machine as they come in varying sizes and shapes, different colours, high visual similarity, and texture. The classification of spices presents useful applications in the field of Artificial Intelligence-driven food industry, e-commerce, and health care. In the billion-dollar …

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An Improved Aquila Optimization With Fuzzy Model Based Energy Efficient Cluster Routing Protocol For Wireless Sensor Networks, Ramakrishnan Ramamoorthy, Rameshkumar Ranganathan, Sivakumar Ramu Mar 2025

An Improved Aquila Optimization With Fuzzy Model Based Energy Efficient Cluster Routing Protocol For Wireless Sensor Networks, Ramakrishnan Ramamoorthy, Rameshkumar Ranganathan, Sivakumar Ramu

Yanbu Journal of Engineering and Science

Due to the latest advances in microelectronics, wireless sensor networking (WSN) has been introduced in many applications. The flow of event data in WSN applications requires timely and reliable distribution so that immediate response and appropriate action can be taken. However, the limited power supply to the sensor terminal causes a transmission between the delay on the way to the base station and the power consumption. Clustering techniques are essential in developing the WSN routing algorithm that improves network operating time and power efficiency. However, due to the unbalanced power consumption between the terminals, the WSN is the optimal, energy …

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Capuchin Search Algorithm Based Task Scheduling In Cloud Computing Environment, Sivakumar Ramu, Rameshkumar Ranganathan, Ramakrishnan Ramamoorthy Mar 2025

Capuchin Search Algorithm Based Task Scheduling In Cloud Computing Environment, Sivakumar Ramu, Rameshkumar Ranganathan, Ramakrishnan Ramamoorthy

Yanbu Journal of Engineering and Science

Cloud computing is mathematical process that provides more power and flexibility in computing infrastructure. Cloud computing provides internet services using a network of remote services. The core service for any environment is the best business plan that supports better quality of service (QoS). Task scheduling in the cloud is a key issue that needs to be addressed to improve system performance and high customer satisfaction. The task scheduling affects the exact time of operation and the cost of using the system. In this paper, we propose a capuchin search algorithm based task scheduling (CSTS) in cloud computing environment. In CSTS …

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Numerical Experiments And Analysis Of Shock Wave Diffraction Around Structures, Ahmed Bagabir Mar 2025

Numerical Experiments And Analysis Of Shock Wave Diffraction Around Structures, Ahmed Bagabir

Yanbu Journal of Engineering and Science

Flows with adverse pressure gradients are more challenging to simulate numerically due to the boundary layer separation. However, the computational fluid dynamics have been used successfully to improve the understanding of the complex fluid dynamics of the transient shock-induced shear layers. The present research tries to investigate the eligibility of the inviscid, viscous (laminar), and turbulent solvers to find which ones reveal realistic results and agree best with the experiments. The solvers are based on the Euler, the Navier-Stokes equations, and the Reynolds averaged Navier-Stokes equations coupled with the SST turbulence model, respectively. A mesh-adaptive high-order AUSM+ numerical scheme is …

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New Relativistic And Nonrelativistic Model Of Diatomic Molecules And Fermionic Particles Interacting With Improved Modified Mobius Potential In The Framework Of Noncommutative Quantum Mechanics Symmetries, Abdelmadjid Maireche Mar 2025

New Relativistic And Nonrelativistic Model Of Diatomic Molecules And Fermionic Particles Interacting With Improved Modified Mobius Potential In The Framework Of Noncommutative Quantum Mechanics Symmetries, Abdelmadjid Maireche

Yanbu Journal of Engineering and Science

In this study, the deformed Klein–Gordon equation, Dirac equation, and Schrödinger equations were solved with the improved the modified Mobius square potential model (IMSPM, in short) using Bopp’s shift and standard perturbation theory methods in the symmetries of extended quantum mechanics. By employing the improved approximation to the centrifugal term, the relativistic and nonrelativistic bound state energies were obtained for some selected diatomic molecules (H2, I2, CO, NO, and HCl). The relativistic shift energy ΔEtotmsp(n,α,A,B,V0,Θ,σ,χ,j,l,s,m) and the perturbative nonrelativistic corrections ΔEnrmsp(n,α,A,B,V0,Θ,σ,χ,j,l,s,m) appeared as a function of the parameters (α,A,B,V0), the parameters of noncommutativity (Θ,σ,χ), in addition to the atomic quantum …

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Numerical And Computational Fluid Dynamics Analysis Of Airflow In The Air Intake Manifold Of A 1.8l Engine With Respect To Different Intake Velocity, Anand Valiavalappil Mar 2025

Numerical And Computational Fluid Dynamics Analysis Of Airflow In The Air Intake Manifold Of A 1.8l Engine With Respect To Different Intake Velocity, Anand Valiavalappil

Yanbu Journal of Engineering and Science

The intake air manifold is a vital part of any internal combustion engine. The main purpose of the air intake manifold is to provide sufficient air to each cylinder and also equal distribution of air flow for each runner. The air needed to be distributed evenly within the runners, to achieve the maximum efficiency and performance of the engine. The present study is performed on the air intake manifold used over a 1.8-liter Dual Overhead Cam Engine (DOHC) in-Line16-valve 4-cylinder engine (2015 Model). The main objective of this study is to perform computational fluid dynamics (CFD) analysis using Ansys – …

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Heavy-Light Mesons In The Symmetries Of Extended Nonrelativistic Quark Model, Abdelmadjid Maireche Mar 2025

Heavy-Light Mesons In The Symmetries Of Extended Nonrelativistic Quark Model, Abdelmadjid Maireche

Yanbu Journal of Engineering and Science

In present work, the modified Schrödinger equation (MSE) is analytically solved. The Heavy-Light Mesons (HLM) under modified nonrelativistic quark-antiquark potential, are extended to the symmetries of noncommutative quantum mechanics (NCQM), using the generalized Bopp's shift method. The energy a spectrum of HLM has been investigated in the framework of the perturbative quantum chromodynamics (PQCD) extended nonrelativistic quark model. The new energy eigenvalues and the corresponding Hamiltonian operator are calculated in the 3-dimensional noncommutative real space phase (NC: 3D-RSP) symmetries. The masses of the scalar, vector, pseudoscalar, and pseudovector for (B, Bs, D and Ds) mesons have been calculated in (NC: …

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Investigation Of Fluid Structure Interaction (Fsi) Effect On A Frp (Fiber Reinforced Polymer) Pole Using Ansys, Anand Valiavalappil Mar 2025

Investigation Of Fluid Structure Interaction (Fsi) Effect On A Frp (Fiber Reinforced Polymer) Pole Using Ansys, Anand Valiavalappil

Yanbu Journal of Engineering and Science

This paper presents a simulation study on a fiber-reinforced polymer (FRP) light pole that is being used in Yanbu Industrial City, Saudi Arabia. The light poles in this area are subjected to cyclic wind load blowing from the Red Sea. It is of great interest to re-investigate the strength and integrity of the structure for future improvement. A three-dimensional numerical simulation has been performed to analyze the effect of wind velocity over the FRP pole. The pole is conical in shape, having a circular hollow cross-section in both the ends and tapered uniformly. The pole considered for simulation is having …

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Numerical Solution Of Convection-Diffusion Equation By Chebyshev Spectral Method Via Lie Group Method, M. A. Assabaai Mar 2025

Numerical Solution Of Convection-Diffusion Equation By Chebyshev Spectral Method Via Lie Group Method, M. A. Assabaai

Yanbu Journal of Engineering and Science

The numerical solution of convection-diffusion equation is presented by using Chebyshev spectral method based on El-Gendi method via Lie group analysis. Firstly, we apply Lie symmetry group analysis for the convection-diffusion equation. This method yields convection-diffusion equation to a system of ordinary differential equations (ODEs). Secondly, this system is solved numerically by using Chebyshev spectral method. The numerical results obtained by this way are compared with the exact solution.

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A Theoretical Investigation Of The Schrödinger Equation For A Modified Two Dimensional Purely Sextic Double-Well Potential, Abdelmadjid Maireche Mar 2025

A Theoretical Investigation Of The Schrödinger Equation For A Modified Two Dimensional Purely Sextic Double-Well Potential, Abdelmadjid Maireche

Yanbu Journal of Engineering and Science

A theoretical analytical investigation for the exact solvability of non-relativistic quantum spectrum systems, at low energy for modified two-dimensional purely sextic double-well potential (2D-modified sextic DWAO potential) is discussed, by means Bopp's shift method, instead to solving deformed Schrödinger equation with star product, in the framework of both noncommutativite two dimensional real space and phase (NC: 2D-RSP), the exact corrections for lowest excitations are found straightforwardly for interactions in one-electron atoms by means of the standard perturbation theory for three special cases. Furthermore, the obtained corrections of energies are depended on the four infinitesimals parameters (θ, χ) and (θ,σ), which …

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Optimal Placement Of D-Statcom Using Quadratic Adaptive Bacterial Foraging Algorithm, Umar Musa, Ganiyu A. Bakare, Abdullahi A. Mati, Abdullahi Abubakar Mas'ud Mar 2025

Optimal Placement Of D-Statcom Using Quadratic Adaptive Bacterial Foraging Algorithm, Umar Musa, Ganiyu A. Bakare, Abdullahi A. Mati, Abdullahi Abubakar Mas'ud

Yanbu Journal of Engineering and Science

Optimal placement of Distribution Flexible AC Transmission Systems (D-FACTS) devices in power networks maximizes loadability, compensates reactive power, minimizes power loss and enhances voltage profile. In this paper, a Quadratic Adaptive Bacterial Foraging Algorithm (QABFA) is used to the optimal location and sizing of Distribution Static Compensator (D-STATCOM) in radial distribution networks for loss minimization and voltage profile enhancement. Power losses and voltage deviation are calculated using a direct power flow method. A multi-objective function made-up of total active power loss (PT(loss)) and bus voltage deviation (VD) is formulated. The QABFA is modelled with a quadratic run-length unit, and without …

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Dc Motor Drive Control Using Fuzzy Pd+I Controller Based Ga Tuning, Fawsan Salem, Mohamed I. Mosaad Mar 2025

Dc Motor Drive Control Using Fuzzy Pd+I Controller Based Ga Tuning, Fawsan Salem, Mohamed I. Mosaad

Yanbu Journal of Engineering and Science

This article presents a control method for DC motor drive using Fuzzy PD+I controller based Genetic Algorithm (GA). This control method is adequate whenever it is possible to apply a PID controller or this controller is already applied. The idea behind this controller is to adjust a conventional PID control parameters (K, K, and Ka) using GA and then determine the equivalents of these gains in the fuzzy domain. The tuned controller parameters are used as initial values for parameters of the fuzzy PD+1 controller. The proposed controller, fuzzy PD+I controller has the feature to be either linear or non-linear …

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Hall Effects On Rotating Mhd Channel Flow In The Presence Of An Inclined Magnetic Field, S. Das, B.C. Sarkar, R. N. Jana, A. J. Chamkha Mar 2025

Hall Effects On Rotating Mhd Channel Flow In The Presence Of An Inclined Magnetic Field, S. Das, B.C. Sarkar, R. N. Jana, A. J. Chamkha

Yanbu Journal of Engineering and Science

MHD flow of a viscous incompressible electrically conducting fluid between two parallel plates in a rotating system in the presence of an inclined magnetic field has been studied on taking Hall current into account. An exact solution of the governing equations has been obtained in closed form. Numerical results of the fluid velocity components and the shear stresses at the plates are being discussed graphically. It is observed that both Hall currents as well as the angle of inclination of the applied magnetic field have a retarding influence on the primary fluid velocity whereas they accelerate the secondary fluid velocity. …

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Modeling, Simulation And Neural Control Of Wheeled Inverted Pendulum, Muhammad Yasir Amir Khan, Vali Uddin Abbas Mar 2025

Modeling, Simulation And Neural Control Of Wheeled Inverted Pendulum, Muhammad Yasir Amir Khan, Vali Uddin Abbas

Yanbu Journal of Engineering and Science

Wheeled inverted pendulum (WIP) is an underactuated and a highly unstable system. In this paper we have proposed modelling and control of WIP as hybrid automaton based on torque equations rather than Lagrangian method. The model was simulated using Simulink using Direct Inverse Neural Control (DINC) to control the WIP system using the hybrid automaton based strategy so as to keep it at upright position. Simulation results reveal that control scheme is sufficiently able to control the system at desired position but with slight steady state error which was found to reduce with the increasing sampling rate.

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Microwave Against Thermal Treatment For Manufacturing Of Activated Carbon From Agricultural Wastes And Its Use To Adsorb Methylene Blue-Equilibrium Ad Kinetic Studies, Hossam Altaher, Fahd M. Al-Oufi, Yehia H. Magdy, Manar Hassan Mar 2025

Microwave Against Thermal Treatment For Manufacturing Of Activated Carbon From Agricultural Wastes And Its Use To Adsorb Methylene Blue-Equilibrium Ad Kinetic Studies, Hossam Altaher, Fahd M. Al-Oufi, Yehia H. Magdy, Manar Hassan

Yanbu Journal of Engineering and Science

Dates pits, a widely available agricultural waste, was used to produce two samples of activated carbon. The first sample was prepared by thermal treatment at 500 °C for two hours, and the other one was prepared through microwave irradiation for 12 minutes. Zinc chloride was used as the chemical activator for the two samples. The efficiency of the two samples towards methylene blue adsorption was investigated. The effects of some parameters, such as initial pH of the solution, initial concentration of methylene blue, contact time and adsorbent dose, on the adsorption capacity were also investigated. Equilibrium and kinetic models were …

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Rainfall Runoff Modeling For Catchments Having Low Quality Scarce Data, Ghumman A. R., Yousry Ghazaw, M. S. Abulohom Mar 2025

Rainfall Runoff Modeling For Catchments Having Low Quality Scarce Data, Ghumman A. R., Yousry Ghazaw, M. S. Abulohom

Yanbu Journal of Engineering and Science

Monthly runoff from a catchment is required for water resources engineering and management. This paper deals with runoff modeling from catchments which have scarce data of low quality. Two models namely mathematical conceptual model and Multivariate Auto Regressive Moving Average model (MARMA) were developed and applied to two catchments (Brandu River and Khost River catchments) in Pakistan. The precipitation and meteorological data used were collected from Meteorological Department Baluchistan and North West Frontier Province, Pakistan. The results of mathematical conceptual model and multivariate autoregressive moving average model were compared with each other. It was observed that multivariate autoregressive - moving …

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Combined Effects Of Joule Heating And Viscous Dissipation On Transient Mhd Natural Convection Of Viscoelastic Fluid Over A Vertical Surface, Mohammed Q. Al-Odat, Abdulamjeed Saeed Al-Ghamdi, Abdulla H. Al-Essa Mar 2025

Combined Effects Of Joule Heating And Viscous Dissipation On Transient Mhd Natural Convection Of Viscoelastic Fluid Over A Vertical Surface, Mohammed Q. Al-Odat, Abdulamjeed Saeed Al-Ghamdi, Abdulla H. Al-Essa

Yanbu Journal of Engineering and Science

The combined effects of Joule heating and viscous dissipation on transient Magnetohydrodynamics (MHD) free convective flow of an incompressible electrically- conducting viscoelastic second-order fluid over a vertical surface are investigated numerically. The governing non-linear dimensionless equations are solved using an implicit finite difference scheme of Crank-Nicolson type with a tri-diagonal matrix manipulation. Effects of viscoelastic parameter, Magnetic parameter, Eckert number and Prandtl number on the flow and heat transfer transient characteristics are studied. It was found that, the velocity inside the boundary layer increases as the viscoelastic parameter increases, and accordingly the skin friction coefficient increases. Conversely an opposite behavior …

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Modeling And Neural Control Of Quadrotor Helicopter, M Yasir Amir, Vali Uddin Abbas Mar 2025

Modeling And Neural Control Of Quadrotor Helicopter, M Yasir Amir, Vali Uddin Abbas

Yanbu Journal of Engineering and Science

Quadrotor Helicopter or simply quadrotor is rotorcraft that has four lift-generating propellers. Two of the propellers spin clock wise and the other two counter-clockwise. Control of the machine can be achieved by varying relative speed of the propellers. Quadrotor concept is not new, however the modern quadrotors are mostly unmanned. Advancement in miniaturized IMU technology, availability of high speed brushless motors and high power to weight ratio Li-Polymer battery technology, quadrotors can now be successfully designed and fabricated. This paper proposes a mathematical model of quadrotor dynamics and a control scheme based on Direct Inverse Neural Control. In modeling A …

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