Engineering Commons^™

Experimental And Numerical Study Of Heat Transfer Phenomenon In A Micro Droplet Reactor, Chintan Jitendra Gandhi

Mechanical and Aerospace Engineering Theses

Temperature is an important control parameter during chemical reaction process. Micro reactors have attracted much attention due to its capability of excellent heat and mass transfer, fast reaction, and inherent safety of small scale. Among various types of micro reactors, micro droplet as a batch reactor has its own advantages such as high multiplexing capability. However, strong heat dissipation characteristics of microscale systems (due to large surface to volume ratio) hampers the measurement and monitor of enthalpy changes during the reaction. This study mainly focuses on temperature monitoring at micro droplet reactor by using thin film resistance temperature detector (RTD). …

Nondestructive Testing And Structural Health Monitoring Based On Adams And Svm Techniques, Gang Jiang, Yi Ming Deng, Ji Tai Niu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation On The Combustion Characteristic Of Iron Ore Sintering With Flue Gas Recirculation, Gan Wang, Zhi Wen, Guofeng Lou, Ruifeng Dou, Xunliang Liu, Fuyong Su, Sizong Zhang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation Of Directional Solidification Of A Nickel-Based Superalloy With Applied Electric Current, Xiaohui Feng, Yingju Li, Yuansheng Yang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Simulation Investigation Of Temperature Distribution In Large Aluminium Panel During Autoclave Age Forming Process, Yongqian Xu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation Of Mechanical Wave Propagation During Solidification Of Zl205a Alloy, Wang Rujia, Wu Shi Ping, Chen Wei

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

The Setup Of Solidification Phase Transferring (Spt) Model And Its Application In Steel Continuous Casting, Yonglin Ma

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Application Of Numerical Simulation During The Development Of Ductile Iron Bearing Seat, Ping Li, Yanjie Zhao, Junquan Wei, Jitai Niu, Fengju Li

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Computer-Aided Design Of Algorithms Of Pulsed Control Of Arc Welding Process Based On Numerical Simulation, Oksana I. Shpigunova, Anatoliy A. Glazunov

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation And Experiments Analysis On Stiffness Control Mechanism Of Hyperboloid Shallow Shells, Zhao Lihong, Yu Haiping, Xing Zhongwen, Lei Chengxi, Wu Bin

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Process Optimization Of Water Chamber Based On Numerical Simulation, Yang Jian Ning, Yang Yi, Yang Gang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation Of Fluid Flow And Inclusion Motion In Continuous Casting Mold With Electromagnetic Stirring, Engang Wang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation Of Magnetic Properties Of Nano-Structured Nd2fe14b/Α-Fe Multi-Layered Composite Magnets, Lianxi Hu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Temperature Filed Numerical Simulation Of Laser Welding For Ta15 Titanium Alloy By Coupling Thermal And Phase Transformation, Wenmin Ou, Yanhong Wei, Xiaohong Zhan, Gaoyang Mi

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation Of The Influence Of Ceramic Preform On The Infiltration Process Of Metal Matrix Composites, Chang-Chun Dong, Jian-Xin Zhou, Ya-Jun Yin, Xu Shen

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation Of The Through Process Of Aerospace Titanium Alloy Casting Filling, Solidification, And Hot Isostatic Pressing, Jian-Xin Zhou, Zhao Guo, Ya-Jun Yin, Chang-Chang Liu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Deformation And Stress Control Study On H-Beam Welded By Ultra High-Strength Steel, Zhaoxia Qu, Xiaojie Wang, Liqian Xia, Zhongqu Sun

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Simulation Of The Influence Of Preheating On Stress Distribution During Multi-Pass Repair Welding Of Cast Steel, Wen Wang, Jian-Xin Zhou, Ya-Jun Yin

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

The Application Of Physical Simulation And Numerical Simulation During Deformation And Service Of Non-Ferrous Metal, Kexing Song

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Modeling And Simulation Of Dendrite And Porosity Evolution During Solidification In The Molten Pool Of Al–Cu Alloys, Cheng Gu, Yanhong Wei, Xiaohong Zhan

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Numerical Simulation Of Heat Transfer In Porous Metals For Cooling Applications, Edgar Avalos Gauna, Yuyuan Zhao

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

Integrated Computational Materials Engineering In Quenching And Tempering Of Extra-Large Rotors, Mengnie V. Li, Ying Yang, Hengyong Bu, Xuejiao Zhang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.

A Fast Model For The Simulation Of External Gear Pumps, Zechao Lu, Xinran Zhao, Andrea Vacca

The Summer Undergraduate Research Fellowship (SURF) Symposium

External gear pump is an important category of positive displacement fluid machines used to perform the mechanical–hydraulic energy conversions in many fluid power applications. An efficient numerical simulation program is needed to simulate the system in order to provide a direction for design purpose. The model consists of a lumped parameter fluid dynamic model and a model that simulates the radial micro-motions of the gear’s axes of rotation. The system consists of a set of ordinary differential equations related to the conservation on mass of the internal control volumes of the pump, which are given by the tooth space volumes …

Modeling Of Frame Structures Undergoing Large Deformations And Large Rotations, Hui Liu

Open Access Dissertations

Numerical simulation of large-scale problems in structural dynamics, such as structures subject to extreme loads, can provide useful insights into structural behavior while minimizing the need for expensive experimental testing for the same. These types of problems are highly non-linear and usually involve material damage, large deformations and sometimes even collapse of structures. Conventionally, frame structures have been modeled using beam-frame finite elements in almost all structural analysis software currently being used by researchers and the industry. However, there are certain limitations associated with this modeling approach. This research focuses on two issues, in particular, of modeling frame structures undergoing …

Numerical Investigation Of The Phase Change In Transpiration Cooling With The Vof Method, Xiao-Long Ouyang, Pei-Xue Jiang

Sixth International Conference on Porous Media and Its Applications in Science, Engineering and Industry

Transpiration cooling with phase change is numerically investigated in the present work. As shown in Figure 1, a liquid coolant flow is injected into a porous medium from the bottom side. The porous medium receives heat from the hot gas on the top surface and heats the coolant. Thus, phase change can occur in this porous medium. The surface temperature, the heat flux received by the porous medium, the phase distribution and the flow and cooling characteristics are the most important unknowns on this topic.

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Numerical Simulation Of Marina Storage Fires Using Measured Composite Fire And Thermal Properties, Lulu Sun, Aixi Zhou, Andrew Valente

Lulu Sun

Fire test data of boats in rack storage are needed to establish more specific requirements for fire control and protection for this type of vessel in high piled rack storage configurations. Since there is no current large or full scale fire test data available, we have embarked upon testing fire and thermal properties of boat material, fiber reinforced polymer (FRP) composite, by using Differential Scanning Calorimetry, and Cone Calorimeter in order to determine the most effective method to provide sprinkler protection to an indoor boat storage facility. Fire and thermal properties of FRP were obtained from experiments and incorporated into …

Numerical Simulation Of Live Chaparral Fire Behavior Using Firetec, Lulu Sun, Xiangyang Zhou, Shankar Mahalingam, Jesse Canfield, Rodman Linn

Lulu Sun

Fire spread through chaparral fuels is a significant feature of wildland fire in southern California. In order to study the detailed physical processes involved during fire spread, FIRETEC, a coupled atmosphere/wildfire behavior model was refined to examine chaparral fire behavior. FIRETEC combines a sophisticated fine-scale model to simulate a three- dimensional wildfire, moving over a terrain-following finite volume grid, with the motions of the local atmosphere. It accounts for the microscopic details of a fire with macroscopic resolution by dividing quantities into mean and fluctuating parts and the resulting transport equations are solved by using a finite difference method. In …

Experimental And Computational Study Of Gas Bubble Removal In A Microfluidic System Using Nanofibrous Membranes, Hamed Gholami Derami, Ravindra Vundavilli, Jeff Darabi

SIUE Faculty Research, Scholarship, and Creative Activity

This paper presents a simple and efficient method for removing gas bubbles from a microfluidic system. This bubble removal system uses a T-junction configuration to generate gas bubbles within a water-filled microchannel. The generated bubbles are then transported to a bubble removal region and vented through a hydrophobic nanofibrous membrane. Four different hydrophobic Polytetrafluorethylene (PTFE) membranes with different pore sizes ranging from 0.45 to 3 μm are tested to study the effect of membrane structure on the system performance. The fluidic channel width is 500 μm and channel height ranges from 100 to 300 μm. Additionally, a 3D computational fluid …

Numerical Simulation Of Deep Excavation In Gravel Layers, Chien-Yi Wu, Shuh-Gi Chern

Journal of Marine Science and Technology

This study analyzed gravel excavation cases in the Xindian District of Taiwan. Instead of the parameters typically employed in deep excavation analysis we used the deformations of diaphragm walls in a back analysis to achieve recommendations regarding the ideal range of the soil elastic modulus Es in the analysis parameters of numerical simulations for the Xindian District stratum or similar strata. We used Plaxis 2D software to analyze the gravel layer. The results indicated that, when the fifth layer of gravel was set to N = 100 and the range of the soil elastic modulus Es was set between 7.84N …

Investigation And Modeling Of Dip-Coating Process For Dispersions, Mahyar Javidi Soufiani

Electronic Thesis and Dissertation Repository

Dip coating of liquid film deposition on cylindrical substrates is studied using mathematical modeling, numerical simulation and experimental investigation. A mathematical model based on the Landau-Levich approach for dip coating has been developed using the Ellis constitutive equation, for cylindrical geometries, to analyze the effects on the coating thickness of the substrate radius and hydrodynamic behavior for a non-Newtonian fluid. The influence of the viscosity at low shear rates near the surface of the withdrawal film is included in the Ellis model and coating thickness results for Ellis, power law and Newtonian models are compared with experimental data. Good agreement …