Finite element method solution of simultaneous two-dimensional heat and mass transfer in laminar film flow |
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| Authors: | Ir B J C van der Wekken Ir R H Wassenaar Ir A Segal |
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| Institution: | (1) Department of Mechanical Engineering, Delft University of Technology Laboratory of Refrigeration, Mekelweg 2, 2628 CD Delft, The Netherlands;(2) Department of Mathematics, Delft University of Technology Faculty of Applied Analyses, Julianalaan 132, 2628 BC Delft, The Netherlands |
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| Abstract: | A finite element solution is given for the coupled heat and mass transfer taking place when a vapour with considerable heat of absorption is absorbed into a laminar film flow. Convection and diffusion parallel and perpendicular to the direction of flow are taken into account. Temperature and mass fraction profiles across the film are given as well as results in film flow direction for several values of the Peclet number. Comparison with a solution based on one-dimensional flow and diffusion perpendicular to the flow, shows that deviations from this case by our two-dimensional solution increase for decreasing Peclet number. |
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