Computational investigation of slot jet impinging on a heated flat plate using low-Reynolds number modeling

Abstract

The present work reports the computational investigation of turbulent slot jet impinging on a heated plate subjected to isothermal and isoflux boundary conditions. The eddy viscosity based 2-equation low-Reynolds number 𝑘 − 𝜀 model of Yang and Shih has been considered. Low-Reynolds number (LRN) modeling employ near-wall integration which solves the entire boundary layer using very find grid near the wall to handle the sharp gradient of variables prevailing in these regions. The Reynolds number of jet at the inlet is 9900 and the non-dimensional distance between the top and bottom plate i.e. H/w is 7.5. The variation of centerline axial velocity, variation of local maximum axial velocity, profile of non-dimensional wall shear stress along impingement and confinement wall, distribution of local Nusselt number along impingement wall and confinement wall, and distribution of Reynolds shear stress in the domain are discussed.