The Experts below are selected from a list of 171 Experts worldwide ranked by ideXlab platform
Thanabalan Murugesan - One of the best experts on this subject based on the ideXlab platform.
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Effect of Feed Spacer Mesh Length Ratio on Unsteady Hydrodynamics in 2D Spiral Wound Membrane (SWM) Channel
Industrial & Engineering Chemistry Research, 2010Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:The present work involves the simulation and optimization of the ladder-type spacer mesh length (ML) ratio in spiral wound membranes (SWMs), using a two-dimensional (2D) integrated computational fluid dynamics (CFD) approach. The permeation properties, incorporated with a transient unsteady hydrodynamics modeling approach, were used to analyze and optimize the ML value for SWM feed spacers. The influence of unsteady hydrodynamics on the development of the concentration Polarization in the membrane channel was also investigated. The optimum ML ratio was determined to be 3, because of its ability to generate a high intensity of unsteady hydrodynamics with the lowest effective concentration Polarization Factor and the results were further validated using velocity vector plots, wall shear stress analysis, and the localized concentration Polarization Factor.
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Feed spacer mesh angle: 3D modeling, simulation and optimization based on unsteady hydrodynamic in spiral wound membrane channel
Journal of Membrane Science, 2009Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:Basic knowledge on the hydrodynamics in the spacer-filled spiral wound membrane (SWM) channel is vital for the understanding of the formation of concentration Polarization at the membrane interface. In the present study, a 3D laminar transient hydrodynamics modeling approach was used to study and optimize the spacer mesh angle for the SWM feed spacer. Based on the simulated results, the optimal spacer mesh angle that yields the minimum effective concentration Polarization Factor, was found to be α120β30. Under this optimal mesh angles, spacer α120β30 also demonstrated the highest magnitude of unsteady hydrodynamics (which adjacent to the membrane wall) at a moderate degree of pressure loss.
Kok Keong Lau - One of the best experts on this subject based on the ideXlab platform.
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Effect of Feed Spacer Mesh Length Ratio on Unsteady Hydrodynamics in 2D Spiral Wound Membrane (SWM) Channel
Industrial & Engineering Chemistry Research, 2010Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:The present work involves the simulation and optimization of the ladder-type spacer mesh length (ML) ratio in spiral wound membranes (SWMs), using a two-dimensional (2D) integrated computational fluid dynamics (CFD) approach. The permeation properties, incorporated with a transient unsteady hydrodynamics modeling approach, were used to analyze and optimize the ML value for SWM feed spacers. The influence of unsteady hydrodynamics on the development of the concentration Polarization in the membrane channel was also investigated. The optimum ML ratio was determined to be 3, because of its ability to generate a high intensity of unsteady hydrodynamics with the lowest effective concentration Polarization Factor and the results were further validated using velocity vector plots, wall shear stress analysis, and the localized concentration Polarization Factor.
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Feed spacer mesh angle: 3D modeling, simulation and optimization based on unsteady hydrodynamic in spiral wound membrane channel
Journal of Membrane Science, 2009Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:Basic knowledge on the hydrodynamics in the spacer-filled spiral wound membrane (SWM) channel is vital for the understanding of the formation of concentration Polarization at the membrane interface. In the present study, a 3D laminar transient hydrodynamics modeling approach was used to study and optimize the spacer mesh angle for the SWM feed spacer. Based on the simulated results, the optimal spacer mesh angle that yields the minimum effective concentration Polarization Factor, was found to be α120β30. Under this optimal mesh angles, spacer α120β30 also demonstrated the highest magnitude of unsteady hydrodynamics (which adjacent to the membrane wall) at a moderate degree of pressure loss.
M.z. Abu Bakar - One of the best experts on this subject based on the ideXlab platform.
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Effect of Feed Spacer Mesh Length Ratio on Unsteady Hydrodynamics in 2D Spiral Wound Membrane (SWM) Channel
Industrial & Engineering Chemistry Research, 2010Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:The present work involves the simulation and optimization of the ladder-type spacer mesh length (ML) ratio in spiral wound membranes (SWMs), using a two-dimensional (2D) integrated computational fluid dynamics (CFD) approach. The permeation properties, incorporated with a transient unsteady hydrodynamics modeling approach, were used to analyze and optimize the ML value for SWM feed spacers. The influence of unsteady hydrodynamics on the development of the concentration Polarization in the membrane channel was also investigated. The optimum ML ratio was determined to be 3, because of its ability to generate a high intensity of unsteady hydrodynamics with the lowest effective concentration Polarization Factor and the results were further validated using velocity vector plots, wall shear stress analysis, and the localized concentration Polarization Factor.
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Feed spacer mesh angle: 3D modeling, simulation and optimization based on unsteady hydrodynamic in spiral wound membrane channel
Journal of Membrane Science, 2009Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:Basic knowledge on the hydrodynamics in the spacer-filled spiral wound membrane (SWM) channel is vital for the understanding of the formation of concentration Polarization at the membrane interface. In the present study, a 3D laminar transient hydrodynamics modeling approach was used to study and optimize the spacer mesh angle for the SWM feed spacer. Based on the simulated results, the optimal spacer mesh angle that yields the minimum effective concentration Polarization Factor, was found to be α120β30. Under this optimal mesh angles, spacer α120β30 also demonstrated the highest magnitude of unsteady hydrodynamics (which adjacent to the membrane wall) at a moderate degree of pressure loss.
Abdul Latif Ahmad - One of the best experts on this subject based on the ideXlab platform.
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Effect of Feed Spacer Mesh Length Ratio on Unsteady Hydrodynamics in 2D Spiral Wound Membrane (SWM) Channel
Industrial & Engineering Chemistry Research, 2010Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:The present work involves the simulation and optimization of the ladder-type spacer mesh length (ML) ratio in spiral wound membranes (SWMs), using a two-dimensional (2D) integrated computational fluid dynamics (CFD) approach. The permeation properties, incorporated with a transient unsteady hydrodynamics modeling approach, were used to analyze and optimize the ML value for SWM feed spacers. The influence of unsteady hydrodynamics on the development of the concentration Polarization in the membrane channel was also investigated. The optimum ML ratio was determined to be 3, because of its ability to generate a high intensity of unsteady hydrodynamics with the lowest effective concentration Polarization Factor and the results were further validated using velocity vector plots, wall shear stress analysis, and the localized concentration Polarization Factor.
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Feed spacer mesh angle: 3D modeling, simulation and optimization based on unsteady hydrodynamic in spiral wound membrane channel
Journal of Membrane Science, 2009Co-Authors: Kok Keong Lau, M.z. Abu Bakar, Abdul Latif Ahmad, Thanabalan MurugesanAbstract:Basic knowledge on the hydrodynamics in the spacer-filled spiral wound membrane (SWM) channel is vital for the understanding of the formation of concentration Polarization at the membrane interface. In the present study, a 3D laminar transient hydrodynamics modeling approach was used to study and optimize the spacer mesh angle for the SWM feed spacer. Based on the simulated results, the optimal spacer mesh angle that yields the minimum effective concentration Polarization Factor, was found to be α120β30. Under this optimal mesh angles, spacer α120β30 also demonstrated the highest magnitude of unsteady hydrodynamics (which adjacent to the membrane wall) at a moderate degree of pressure loss.
Efrem Curcio - One of the best experts on this subject based on the ideXlab platform.
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overcoming temperature Polarization in membrane distillation by thermoplasmonic effects activated by ag nanofillers in polymeric membranes
Desalination, 2019Co-Authors: Antonio Politano, Gianluca Di Profio, Enrica Fontananova, Vanna Sanna, A Cupolillo, Efrem CurcioAbstract:Abstract In recent years, Membrane Distillation (MD) has emerged either as a promising alternative or as a complement to Reverse Osmosis (RO) in seawater desalination. However, the performance of MD is significantly offset by temperature Polarization, a phenomenon intrinsically related to water evaporation that causes the decrease of the solution temperature at the membrane surface and, ultimately, the loss of driving force. In this work, we show that temperature Polarization can be withdrawn by exploiting thermal collective effects activated by the excitation of plasmonic modes in UV-irradiated Mixed Matrix Membranes composed of silver nanoparticles (Ag NPs) incorporated in polyvinylidene fluoride (PVDF) microporous films. For experimental tests carried out under vacuum (VMD) and with an absorbed radiant heating power of 2.3 · 104 W/m2, best results were obtained using PVDF membranes loaded with 25%Ag NPs. In this case, measured transmembrane fluxes to pure water and 0.5 M NaCl solution were 32.2 and 25.7 L/m2 h, respectively, i.e. about 11- and 9- fold higher than the corresponding values for unloaded membranes. Remarkably, energy analysis revealed that the heat generation of Ag NPs under plasmonic resonance was able to withdrawn temperature Polarization, resulting in estimated temperature Polarization Factor (TPF) values of 106.5% for 0.5 M NaCl solution.