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5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
- Keyword
-
- Porous media (2)
- Cement-formation interface (1)
- Collocated (1)
- Finite volume method (1)
- Forced convection heat trans- fer (1)
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- Heat transfer (1)
- Low Mach (1)
- Mixing effect (1)
- Mud contamination (1)
- Newton Raphson (1)
- PISO (1)
- Porous (1)
- Rhie-Chow (1)
- Runge-Kutta Gill method (1)
- Segregated (1)
- Shear bond strength (1)
- Spurious oscillations (1)
- Variable porosity (1)
- Vortex flow (1)
- Zonal isolation and material characterization (1)
Articles 1 - 30 of 59
Full-Text Articles in Engineering
Use Of Liquid Pressure-Pulse Decay Permeameter In Experimental Evaluation Of Permeability In Wellbore Cement Under Geopressured Geothermal Conditions, Kolawole Bello, Mileva Radonjic
Use Of Liquid Pressure-Pulse Decay Permeameter In Experimental Evaluation Of Permeability In Wellbore Cement Under Geopressured Geothermal Conditions, Kolawole Bello, Mileva Radonjic
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Geopressured reservoirs in the northern Gulf of Mexico basin along the coast of Louisiana have been determined to be viable source of geothermal energy and potential sites for carbon sequestration, where CO2 can be utilized to induce convective flow of geofluids and enhance heat harvesting. These reservoirs are made of unconsolidated sandstone capped by shale layers and possess temperatures as high as 140⁰C. At high temperatures, cement strength retrogression occur when calcium silicate hydrate phase in hydrated cement converts to alpha dicalcium silicate hydrate phase. The higher the temperature, the quicker the rate of transformation of calcium silicate hydrate. The …
Numerical Solution Of Burgers' Equation Arising In Longitudinal Dispersion Phenomena In Fluid Flow Through Porous Media By Crank-Nicolson Scheme, Ravi Borana, Vikas Pradhan, Manoj Mehta
Numerical Solution Of Burgers' Equation Arising In Longitudinal Dispersion Phenomena In Fluid Flow Through Porous Media By Crank-Nicolson Scheme, Ravi Borana, Vikas Pradhan, Manoj Mehta
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
The present paper discusses the numerical solution of the Burgers’ equation arising in longitudinal dispersion phenomenon in fluid flow through porous media. In the porous medium pure water, salt water or contaminated water disperse in longitudinal direction gives rise to a non-linear partial differential equation in the form of Burgers’ equation. The equation is solved by using Crank-Nicolson finite difference scheme with appropriate initial and boundary conditions. The longitudinal dispersion phenomenon may be miscible or immiscible fluid flow through porous media. The problem of miscible displacement can be seen in the coastal areas, where fresh water beds are gradually displaced …
Evaporation From A Capillary Tube: Experiment And Modelization, Emmanuel Keita, Pamela Faure, Stephane Rodts, Phillippe Coussot, David Weitz
Evaporation From A Capillary Tube: Experiment And Modelization, Emmanuel Keita, Pamela Faure, Stephane Rodts, Phillippe Coussot, David Weitz
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Drying is known to play a major role in soils and buildings materials. Better understanding the physics may help saving cost and energy. Thus control of the drying kinetics is a key factor. In permeable porous media, capillary forces lead to constant curvature of the air/water interface. The value of the curvature and the shape of the interface depend strongly on the pore geometry. Thus small change in their shape may lead to main change of the air/water interface as the medium desaturates. As the surface is supplied with water the drying rate remains at a constant value set by …
Experimental Study For Air Cooling Using Membrane Covered Tray, Mohamed Ali, Obida Zeitoun, Hany Al-Ansary, Abdullah Nuhait
Experimental Study For Air Cooling Using Membrane Covered Tray, Mohamed Ali, Obida Zeitoun, Hany Al-Ansary, Abdullah Nuhait
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
An experimental study is conducted to cool the outdoor air using a humidification technique. A wind tunnel was built with a membrane covered tray serves as a test section. An outdoor air passes over a tray full of water and covered with a specific membrane. Air temperatures and relative humidity are measured before and after the tray for several air and water speeds. Air speed is measured at different locations along the centerline of the cross section. Results show that as the angle of the tray increases the air temperature drop increases which improve the efficiency of the humidification technique. …
Heat Flow From A Buried Cylindrical Tank Partially Submerged In Groundwater, Robert Mckibbin, Shigeo Kimura
Heat Flow From A Buried Cylindrical Tank Partially Submerged In Groundwater, Robert Mckibbin, Shigeo Kimura
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
This study was motivated by the possibility of re-use of buried cylindrical tanks, once a facility for fuel storage at motor vehicle service stations (now relinquished by oil companies), but remaining for use as thermal reservoirs connected to space heating systems (e.g. for convenience stores) in Japan. The ground in which a tank is buried is assumed to be of uniform porosity and permeability, with a phreatic groundwater surface (water table) that may rise and fall, albeit slowly, over time. The ground and the water are subject to heating and cooling according to the season and weather conditions. Here, it …
Keynote Talk – Novel Convective Heat Transfer Enhancement In Channels And Tubes Filled With Nanofluid-Saturated Metal Foams, Fumika Sakai, Wenhao Li, Akira Nakayama
Keynote Talk – Novel Convective Heat Transfer Enhancement In Channels And Tubes Filled With Nanofluid-Saturated Metal Foams, Fumika Sakai, Wenhao Li, Akira Nakayama
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
A local thermal non-equilibrium theory was exploited to investigate heat transfer in nanofluid saturated porous media, in view of possible heat transfer applications of metal foams filled with nanofluids as high performance heat exchangers. The resulting set of the macroscopic equations based on the modified Buongiorno model proposed by Yan et al. for convective heat transfer in nanofluids were used to obtain the analytical solutions for laminar fully developed forced convection in channels and tubes filled with nanofluid saturated metal foams. The analytical and numerical solutions were obtained for laminar fully developed forced convection in channels and tubes filled with …
Investigation Of Transpiration Cooling With Local Thermal Non-Equilibrium Model: Effects Of Different Thermal Boundary Conditions At The Porous-Fluid Interface, Zheng Huang, Yin-Hai Zhu, Pei-Xue Jiang, Yan-Bin Xiong
Investigation Of Transpiration Cooling With Local Thermal Non-Equilibrium Model: Effects Of Different Thermal Boundary Conditions At The Porous-Fluid Interface, Zheng Huang, Yin-Hai Zhu, Pei-Xue Jiang, Yan-Bin Xiong
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
In this study, the main stream coupled with a porous medium with local thermal non-equilibrium assumption is analyzed. The flow inside the porous material is modelled using the Darcy–Brinkman–Forchheimer equation and the incompressible Navier-Stokes equations are solved for the main stream. Several couple conditions between the main flow temperature and the temperatures of the solid matrix and coolant flow at the fluid/porous interface is calculated. The results show that the Model C assumes the main flow temperature equals the solid phase temperature and the main flow heat flux is all imposed on the solid phase gives the most reasonable answer.
Effective Permeability Upscaling From Heterogenous To Homogenous Porous Media, Mehmet Cicek, Deepak Devegowda, Faruk Civan, Richard Sigal
Effective Permeability Upscaling From Heterogenous To Homogenous Porous Media, Mehmet Cicek, Deepak Devegowda, Faruk Civan, Richard Sigal
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
An effective method to upscale permeability is presented to represent a heterogeneous reservoir with homogeneous permeability and porosity values. As a result, there is no need to deal with dual-porosity or dual-permeability models in reservoir simulations. Thus, the required CPU time for reservoir production and flow simulations is reduced significantly.
Modified Rhie-Chow / Piso Algorithm For Collocated Variable Finite Porous Media Flow Solvers, Markus Nordlund
Modified Rhie-Chow / Piso Algorithm For Collocated Variable Finite Porous Media Flow Solvers, Markus Nordlund
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
A modified Rhie-Chow/ PISO segregated algorithm is proposed, whic by construction avoids the development of spurious oscillations in the solution fields for low Mach number flow in heterogeneous, isotropic porous media. The collocated variable finite volume based algorithm modifies the commonly used Rhie-Chow interpolation to maintain a strong pressure-velocity coupling when large discontinuous implicit momentum sources are present. This Redistributed Resistivity PISO algorithm is based on a redistribution of the flow resistivity over the neighboring grid cells to the discontinuity. The proposed algorithm is successfully verified against published data for the velocity and pressure for two cases. The robustness of …
Pressure Transient Characteristics Of Multi-Stage Fractured Horizontal Wells In Shale Gas Reservoirs With Consideration Of Multiple Mechanisms, Jingjing Guo, Liehui Zhang, Haitao Wang
Pressure Transient Characteristics Of Multi-Stage Fractured Horizontal Wells In Shale Gas Reservoirs With Consideration Of Multiple Mechanisms, Jingjing Guo, Liehui Zhang, Haitao Wang
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
The approach of multi-stage fractured horizontal wells (MFHWs) has been proven an efficient technology for successful development of shale gas reservoirs. Together with multiple gas flow mechanisms, the existence of multiple hydraulic fractures further complicates the gas flowing problem in shale gas reservoirs. Understanding pressure transient dynamics of MFHWs in shale gas reservoirs is of great importance to provide a perception into long-term pressure dynamics forecast as well as to estimate relevant reservoir and fracturing parameters. This paper presents a comprehensive seepage model to investigate the characteristics of pressure transient responses of a horizontal well intercepted by multiple finitely conductive …
Turbulence In Porous Media: Some Fundamental Questions Addressed By Dns Solutions, Marc Florian Uth, Y. Jin, A. V. Kuznetsov, H. Herwig
Turbulence In Porous Media: Some Fundamental Questions Addressed By Dns Solutions, Marc Florian Uth, Y. Jin, A. V. Kuznetsov, H. Herwig
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
In a generic porous matrix built by a large number of rectangular bars the flow is determined numerically by a DNS approach. Turbulent flow is thus simulated avoiding modelling in order to decide whether turbulent structures with scales much larger than the pore scale exist. So far only under-resolved DNS solutions are determined from which, however, definite conclusions with respect to the maximum turbulent length scale can be drawn.
Numerical Solutions Of Non-Linear Fractional Transport Models In Unconventional Hydrocarbon Reservoirs Using Variational Iteration Method, Nadeen Malik, Iftikhar Ali, Bilal Chanane
Numerical Solutions Of Non-Linear Fractional Transport Models In Unconventional Hydrocarbon Reservoirs Using Variational Iteration Method, Nadeen Malik, Iftikhar Ali, Bilal Chanane
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Unconventional hydrocarbon reservoirs, such as, shale gas deposits, offer a new source of energy resources. These reservoirs consist of tight porous rocks which are characterized by nano-scale size porous networks with ultra-low permeability. The mathematical modeling of phenomena through such tight porous media provides its own challenges. In this study, we consider a relatively new approach by modeling the transport of gas by the time-fractional advection-diffusion equation,
Wall Thickness Optimization Of A Transpiration-Cooled Sharp Leading Edge At Atmospheric Re-Entry, Christian Dittert
Wall Thickness Optimization Of A Transpiration-Cooled Sharp Leading Edge At Atmospheric Re-Entry, Christian Dittert
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
The purpose of this paper is to find the necessary cooling mass flow for a defined wall thickness distribution, which allows a selective cooling for an acceptable temperature range of the sharp leading edge of an atmospheric re-entry vehicle. Due to the angle of attack during the re-entry flight the pressure at the top side is lower than the pressure at the bottom side. However, the highest heat load occurs at the stagnation point at which also the maximum pressure is effective. The efficiency of a transpiration cooling depends on the mass flow rate of the coolant. The cooling mass …
Comparison Of Volume-Average Simulation And Pore-Scale Simulation Of Thermal Radiation And Natural Convection In High Temperature Packed Beds, Le Zhang, Ruina Xu, Peixue Jiang
Comparison Of Volume-Average Simulation And Pore-Scale Simulation Of Thermal Radiation And Natural Convection In High Temperature Packed Beds, Le Zhang, Ruina Xu, Peixue Jiang
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
The phenomenon of natural convection and thermal radiation heat transfer in fluid-saturated high temperature packed beds has been widely studied due to its various applications ranging from solar collectors to high temperature gas cooled reactor. With the local thermal non-equilibrium model, the majority of the numerical simulation studies on natural convection and radiation heat transfer in fluid-saturated porous media have limits. In these studies the internal heat transfer coefficients have always been calculated as the existing formulas, which were obtained by the experiments of forced convection in porous media [1-2]. However, natural convection heat transfer in porous media is dominated …
Three Dimensional Heat And Mass Transfer In Capillary Evaporator, Laetitia Mottet, Typhaine Coquard, Marc Prat
Three Dimensional Heat And Mass Transfer In Capillary Evaporator, Laetitia Mottet, Typhaine Coquard, Marc Prat
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Heat and mass transfer inside the porous wick of a capillary evaporator is studied using a mixed porenetwork model. The impact of the thermal conductivity of the wick on the overheating limit (defined as the difference between the maximum temperature at the top of the metallic casing and the saturated temperature), breakthrough (which occurs when the vapor reaches the wick inlet) and the parasitic heat flux lost by conduction at the entrance of the wick (which decreases the efficiency of the evaporator) is investigated. The study suggests a bilayer wick as a possible better design to optimize the performance of …
Onset Of Double Diffusive Reaction-Convection In An Anisotropic Porous Layer With Internal Heat Source, S.N. Gaikwad, M. Dhanraj
Onset Of Double Diffusive Reaction-Convection In An Anisotropic Porous Layer With Internal Heat Source, S.N. Gaikwad, M. Dhanraj
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
The effect of internal heat source on the onset of double diffusive reaction-convection in an anisotropic porous layer subjected to chemical equilibrium on the boundaries is investigated analytically using linear stability analyses. The linear analysis is based on the usual normal mode method. The Darcy model is employed for the momentum equation. The effect of internal Rayleigh number, Damkohler number, mechanical anisotropy parameter and thermal anisotropy parameter on the stationary and oscillatory convection is shown graphically. It is found that the effect of internal Rayleigh number and mechanical anisotropy parameter have destabilizing effect, while the thermal anisotropy parameter has stabilizing …
Effect Of Variable Porosity On Composite Heat Transfer In A Boundary Layer Flow, Puttabasavsetty Nagaraju
Effect Of Variable Porosity On Composite Heat Transfer In A Boundary Layer Flow, Puttabasavsetty Nagaraju
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
The effects of variable porosity and variable thermal conductivity of the medium and also the emission, absorption and scattering of radiation are studied in this paper. The comparative study has been made for three different situations, namely a) variable porosity b) constant porosity and c) absence of porous medium.In carrying out the solution, the momentum and energy equations are coupled and they are solved simultaneously by Runge-Kutta Gill method in conjunction with Newton-Raphson iterative scheme. The results of the analyses show that, in the cases of variable porosity and absence of porous medium the velocity profiles possess very small curvature …
Fractional Diffusion Model For Transport Through Porous Media, Iftikhar Ali, Nadeen Malik, Bilal Chanane
Fractional Diffusion Model For Transport Through Porous Media, Iftikhar Ali, Nadeen Malik, Bilal Chanane
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
We model the transport of fluid through porous media in terms of fractional diffusion equation (FDE) for the pressure (,)pxt. Potential application could be to shale gas recovery in tight porous media. Specifically, we pose the time FDE in a finite domain of length L.
Mri Evidence Of Nanoparticles Migration In Drying Porous Media, Emmanuel Keita, Pamela Faure, Stephane Rodts, Phillippe Coussot
Mri Evidence Of Nanoparticles Migration In Drying Porous Media, Emmanuel Keita, Pamela Faure, Stephane Rodts, Phillippe Coussot
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Due to the migration of elements they induce imbibition-drying cycles are known to play a major role in the colloid-facilitated transport in many industrials process, for instance for pollutants migration in soils or pores clogging in building materials. We study the drying of a colloidal suspension in a porous media. The critical physical phenomenon at work here is the displacement and redistribution of colloidal particles induced by evaporation of the liquid phase from the porous medium. This can be clearly seen by filling a bead packing with coffee. Indeed after full drying the sample has shaded tones with darker regions …
Phase Change With Local Thermal Non-Equilibrium In A Two-Phase Mixture Model, Franz Lindner, Michael Pfitzner, Christian Mundt
Phase Change With Local Thermal Non-Equilibrium In A Two-Phase Mixture Model, Franz Lindner, Michael Pfitzner, Christian Mundt
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
CFD solutions of multi-phase, single-component flow through a vertical channel, filled with a porous medium, heated from one side, are shown. Steady-state solutions are presented for Darcian flow through capillary porous media. Local thermal non- equilibrium is used with a two-phase mixture. The effects of variation of Peclet-number and dimensionless heat input are shown. The displacement effect of the super-heated vapor reduces the free cross-section of flow of the liquid fluid and accelerates the liquid fluid flowing past the evaporation front. The temperatures, liquid saturations, liquid and vapor heat transfer coefficients are shown for cases with super-heated vapor.
Studies On Permeability Properties And Particle Capture Efficiencies Of Porous Sic Ceramics Processed By Oxide Bonding Technique, Atanu Dey, Nijhuma Kayal, Omprakash Chakrabarti, Rafael Caldato, Caio Andre, Murilo Innocentini, Vadila Guerra
Studies On Permeability Properties And Particle Capture Efficiencies Of Porous Sic Ceramics Processed By Oxide Bonding Technique, Atanu Dey, Nijhuma Kayal, Omprakash Chakrabarti, Rafael Caldato, Caio Andre, Murilo Innocentini, Vadila Guerra
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Porous SiC ceramics bonded with mullite (MBS of fractional porosity (e) of 0.29-0.56, average pore size (dpore) of 5-11 μm, flexural strength (σ) of 9-34 MPa and elastic modulus (E) of 7-28GPa) and cordierite (CBS with e of 0.33-0.72, dpore of 6-50 μm, σ of 5-54 MPa and E of 6-42 GPa) were prepared by heating in air at 1350-1500°C compacts of desired amounts of SiC, Al2O3 and MgO powders and petroleum coke dust as the pore former. Air permeation behavior of well-characterized samples was studied with fluid superficial velocity (vs) from 0.08 to 1.0 m s-1and at RT to …
Effects Of Non-Darcy Flow And Pore Proximity On Gas Condensate Production From Nanopore Unconventional Resources, Alireza Sanaei, Ahmad Jamili, Jeffrey Callard
Effects Of Non-Darcy Flow And Pore Proximity On Gas Condensate Production From Nanopore Unconventional Resources, Alireza Sanaei, Ahmad Jamili, Jeffrey Callard
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Transport properties and mechanisms as well as phase behavior under nanoscale confinement exhibit significant deviations from their bulk behavior. Phase behavior due to the significant effect of molecule-wall interactions as well as molecule-molecule interactions changes in nanopores. Additionally, in nanopores, when the mean free path of molecules is in the order of the pore radius, non-Darcy flow occurs. This phenomenon causes an increase in effective permeability of the flowing fluid. In this study, we focus on analyzing and determining the effect of phase behavior and transport properties change due to pore proximity on production from a shale gas condensate reservoir. …
Performance Comparison Of The Finite-Difference, Practical-Finite-Analytic, Differential-Quadrature, And Differential-Cubature Methods For Solving Porous Media Immiscible Fluids Transport, Faruk Civan
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Reviews and comparisons of the finite-difference, differential-quadrature, differential-cubature, finite-analytic, and practical-finite-analytic methods are presented. Numerical solution of immiscible fluids transport in porous media are illustrated. The cubature and practical finite-analytic methods are shown to have apparent advantages over the other methods because the numerical solution schemes are derived directly from the specific problems of interest.
A Simplified Model For Transport In Aquifers, Robert Mckibbin, Amjad Ali, Winston Sweatman
A Simplified Model For Transport In Aquifers, Robert Mckibbin, Amjad Ali, Winston Sweatman
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Chemicals that are dissolved in groundwater flow along with the slow-moving water as it makes its way through the complex pores of the aquifer; during this process they are dispersed in different directions. The rate of dispersion depends on the porous structure and the fluid speed. Many groundwater aquifers have a natural layered structure; here this is used to advantage by discretizing them into "almost horizontal" layers, where each may have different matrix properties such as thickness, permeability, dispersivity, porosity, etc. The mean dynamic pressure (or mean hydraulic head) may be assumed constant vertically at each horizontal point if it …
Effect Of Temperature Dependent Viscosity On Natural Convective Boundary Layer Flow Over A Horizontal Plate Embedded In A Nanofluid Saturated Porous Medium, Shoba Bagai, Chandrashekhar Nishad
Effect Of Temperature Dependent Viscosity On Natural Convective Boundary Layer Flow Over A Horizontal Plate Embedded In A Nanofluid Saturated Porous Medium, Shoba Bagai, Chandrashekhar Nishad
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
The effect of temperature dependent viscosity on natural convective boundary-layer flow of a nano-fluid over an isothermal horizontal plate is investigated numerically. The viscosity of the fluid is assumed to have an exponentially decaying dependence on temperature ν=ν0e−b(T−T∞). A similarity analysis is presented for field equations embodying conservation of total mass, momentum, thermal energy and nano-particles. The analysis shows that velocity, temperature and nano-particle volume fraction profiles in the respective boundary layers depend on the viscosity parameter γ besides the pertinent parameters such as buoyancy ratio Nr, Brownian motion Nb, thermophoresis Nt and Lewis number Le. From physical considerations one …
Mixed Convection In Horizontal Channels Heated Below With External Heat Losses On Upper Plate And Partially Filled With Aluminum Foam, Bernardo Buonomo, Oronzio Manca, Lorenzo Marinelli, Sergio Nardini
Mixed Convection In Horizontal Channels Heated Below With External Heat Losses On Upper Plate And Partially Filled With Aluminum Foam, Bernardo Buonomo, Oronzio Manca, Lorenzo Marinelli, Sergio Nardini
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
In this paper an experimental investigation on mixed convection in air in a heated channel partially filled with an aluminum foam is carried out. The aluminum foam layer is sets on the lower heated wall of the channel. The channel upper plate has a heat transfer toward the external ambient. The investigation allows to evaluate the effect of the aluminum foam on the mixed convection in the heated channel by wall temperature measurements and flow visualization. Results are given for heated channel without and with foam in terms of wall temperature profiles for different Reynolds number value, form 10 to …
Miscible Density Driven Convective Mass Transfer Process Analysis Based On Entransy Dissipation Theory, Rong Li, Ruina Xu, Peixue Jiang, Huihai Liu, Jiannan Chen
Miscible Density Driven Convective Mass Transfer Process Analysis Based On Entransy Dissipation Theory, Rong Li, Ruina Xu, Peixue Jiang, Huihai Liu, Jiannan Chen
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
Density driven convective mass transfer process in porous media is one of the most universal phenomena in underground aquifer. In this study, an original model defining Nu (or Sh) number for miscible mass transfer system was derived, based on basic concept of integrated entransy dissipation rate. Numerical simulation results of density driven convective mass transfer process in a closed Hele-Shaw cell and porous media are analyzed. In the process of dilute brine-water mass transfer system in Hele-Shaw cell, three different stages were observed. Meanwhile, time dependent entransy variation and Nu number using our definition also show three different steps in …
Experimental Analysis Of Air Vortex Impingement Through Porous Screens, Xudong An, Howard Fultz, Fatemeh Hassanipour
Experimental Analysis Of Air Vortex Impingement Through Porous Screens, Xudong An, Howard Fultz, Fatemeh Hassanipour
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
This paper presents the experimental analysis of air flow vortex propagation through porous screens. This study is conducted by a new and unique experimental setup for ve- locity measurements and visualization of air vortex interac- tion with porous screen. A custom-made, high-precision vortex generator provides a variety of velocity profiles for vortex generation with an unprecedented level of precision. The flow fields are captured with the use of a fog gener- ator and a high-speed CCD camera. The porous screens are constructed out of acrylic rods with various orientations, thickness, and porosities from rod separation. The results presented in this …
Thermohydraulics Of Porous Heat Exchangers: Full Or Partial Blockage?, Kamel Hooman
Thermohydraulics Of Porous Heat Exchangers: Full Or Partial Blockage?, Kamel Hooman
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
No abstract provided.
Concentration Of Bioethanol And Dehydration Of Organic Solvents By Porous Membranes, Tadashi Uragami
Concentration Of Bioethanol And Dehydration Of Organic Solvents By Porous Membranes, Tadashi Uragami
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
In order to obtain higher membrane performance in the concentration of bioethanol and dehydration of organic solvents, porous poly[1-(trimethylsilyl)-1-propyne] (PTMSP) and porous chitosan membranes, respectively are applied to a temperature-difference controlled evapomeation (TDEV) method in which a temperature difference between the feed solution and the membrane surroundings is established. Pressure treated porous PTMS membranes showed a high ethanol concentration performance with a high permeation rate and porous chitosan membranes also showed a high dehydration performance in TDEV. Membrane performances through these porous membranes in TDEV are discussed from the viewpoints of physical structure of membranes and permeants.