Turbulence models impact on the flow and thermal analyses of jet impingement
Tomasz Kura (AGH University of Science and Technology)
E. Fornalik-Wajs (AGH University of Science and Technology)
Jan Wajs (Politechnika Gdanska)
S. Kenjeres (TU Delft - ChemE/Transport Phenomena)
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Abstract
Accurate numerical reconstruction of heat and mass transfer processes in particular applications, such a jet impingement, is difficult to obtain even with the use of modern computational methods. In the proposed paper, the flow and thermal phenomena occurring during single minijet impingement on the flat, concave and convex, heated surfaces were considered. Problem of impingement on non-flat surface, still not common and purely described in the literature, can be of big importance in engineering applications, such as the heat exchangers. Numerical analyses, based on the mass, momentum and energy conservation laws, were conducted with the OpenFOAM software. Focus was placed on the proper model construction, in which turbulence and boundary layer modelling was crucial, due to their significance in the heat transfer processes. Analysis of results obtained by RANS models focused mostly on the comparison of turbulent and hydrodynamics parameters.
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