Abstract
Applying mechanical pressure on a solid boundary contact using a thin porous layer has been found to reduce the pore size and porosity near the wall region, limiting the flow and mass transport properties. This reduction may affect the overall performance of devices such as the electroosmotic pump that generally uses a porous media with constant porosity in an electric field. Therefore, to improve the performance of such devices, a composite porous layer that uses a combination of different porosity value based on the location in the porous domain, is employed with a higher porosity near the wall region than that in the central region. In this study, a numerical simulation is conducted to investigate the fluid dynamic and mass transport characteristics using a composite porous layer with electroosmotic flow. A comparison of the results with the pressure-driven flow shows the effectiveness of the composite porous layer in compensating for the loss of porosity and in improving device performance. The proposed methodology may also enhance the performance of green energy devices such as fuel cells.
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Hunter, R. J., “Zeta Potential in Colloidal Science: Principles and Applications,” Academic Press, 1988.
Kozak, M. W. and Davis, E. J., “Electrokinetics of Concentrated Suspensions and Porous Media: I. Thin Electrical Double Layers,” Journal of Colloid and Interface Science, Vol. 127, No. 2, pp. 497–510, 1989.
Kozak, M. W. and Davis, E. J., “Electrokinetics of Concentrated Suspensions and Porous Media: II. Moderately Thick Electrical Double Layers,” Journal of Colloid and Interface Science, Vol. 129, No. 1, pp. 166–174, 1989.
Rathore, A. S. and Horvath, C., “Capillary Electro Chromatography: Theories on Electroosmotic Flow in Porous Media,” Journal of Chromatography A, Vol. 781, No. 1, pp. 185–195, 1997.
Wang, M. and Chen, S., “Electroosmosis in Homogeneously Charged Micro and Nanoscale Random Porous Media,” Journal of Colloid and Interface Science, Vol. 314, No. 1, pp. 264–273, 2007.
Yao, S. and Santiago, J. G., “Porous Glass Electroosmotic Pumps: Theory,” Journal of Colloid and Interface Science, Vol. 268, No. 1, pp. 133–142, 2003.
Buie, C. R., Posner, J. D., Fabian, T., Cha, S. W., Kim, D., et al., “Water Management in Proton Exchange Membrane Fuel Cells using Integrated Electroosmotic Pumping,” Journal of Power Sources, Vol. 161, No. 1, pp. 191–202, 2006.
Jiang, L., Michelson, J., Koo, J. M., Huber, D., Yao, S., et al., “Closed-loop Electroosmotic Microchannel Cooling System for VLSI Circuits,” IEEE Transactions on Components and Packaging Technologies, Vol. 25, No. 3, pp. 347–355, 2002.
Yao, S., Hertzog, D. E., Zeng, S., Mikkelsen, J. C., and Santiago, J. G., “Porous Glass Electroosmotic Pumps: Design and Experiments,” Journal of Colloid and Interface Science, Vol. 268, No. 1, pp. 143–153, 2003.
Chandrasekhara, B. C., Vortmeyer, D., and Miinchen, “Flow Model for Velocity Distribution in Fixed Porous Beds under Isothermal Conditions,” Thermo and Fluid Dynamics, Vol. 12, No. 2, pp. 105–111, 1979.
Vafai, K. and Tien, C. L., “Boundary and Inertia Effects on Flow and Heat Transfer in Porous Media,” International Journal of Heat and Mass Transfer, Vol. 24, No. 2, pp. 195–203, 1981.
Lee, H., Kim, G. M., Lee, C. Y., and Park, C. W., “Experimental Study on the Basic Performance of Electroosmotic Pump with Ion Exchanging Porous Glass Slit,” Intetnational Journal of Modern Physics B, Vol. 24, No. 15–16, pp. 2627–2632, 2010.
Ling, Z., Yang, T., Meng, F. C., Yi, L., and Zhang, X. X., “Simulation and Experimental Study of a Porous Electroosmotic Pump,” Key Engineering Materials, Vol. 483, pp. 320–326, 2011.
Roshendel, R., Farhanieh, B., and Iranizad, E. S., “The Effects of Porosity Distribution Variation on PEM Fuel Cell Performance,” Renewable Energy, Vol. 30, No. 10, pp. 1557–1572, 2005.
Roshandel, R. and Farhanieh, B., “The Effects of Non-uniform Distribution of Catalyst Loading on Polymer Electrolyte Membrane Fuel Cell Performance,” International Journal of Hydrogen Energy, Vol. 32, No. 17, pp. 4424–4437, 2007.
Iliev, O., Mikeli’c, A., and Popov, P., “On Upscaling Certain Flows in Deformable Porous Media,” Multiscale Modeling and Simulation, Vol. 7, No. 1, pp. 93–123, 2008.
Andrä, H., Iliev, O., Kabell, M., Kirsch, R., Lakdawala, Z., et al., “Fluid-structure Interaction in Porous Media for Loaded Filter Pleats,” Proc. of the 82nd Annual Metting of the International Association of Applied Mathematics and Mechanics, Vol. 11, No. 1, pp. 489–490, 2011.
Vafai, K., “Convective Flow and Heat Transfer in Variable-Porosity Media,” Journal of Fluid Mechanics, Vol. 147, pp. 233–259, 1984.
Vafai, K., Alkire, R. L., and Tien, C. L., “An Experimental Investigation of Heat Transfer in Variable Porosity Media,” Journal of Heat Transfer, Vol. 107, No. 3, pp. 642–647, 1985.
Lee, S. H., Lee, J. H., Park, C. W., Lee, C. Y., Kim, K., et al., “Continuous Fabrication of Bio-inspired Water Collecting Surface via Roll-type Photolithography,” Int. J. Precis. Eng. Manuf.-Green Tech., Vol. 1, No. 2, pp. 119–124, 2014.
Park, S. B. and Park, Y. I., “Fabrication of Gas Diffusion Layer Containing Microporous Layer using Fluorinated Ethylene Prophylene for Proton Exchange Membrane Fuel Cell,” Int. J. Precis. Eng. Manuf., Vol. 13, No. 7, pp. 1145–1151, 2012.
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Cheema, T.A., Kim, K.W., Kwak, M.K. et al. Numerical investigation on composite porous layers in electroosmotic flow. Int. J. of Precis. Eng. and Manuf.-Green Tech. 1, 207–213 (2014). https://doi.org/10.1007/s40684-014-0026-z
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DOI: https://doi.org/10.1007/s40684-014-0026-z