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This document discusses a study on the effects of rough surfaces on heat transfer and flow structures for turbulent round jet impingement. The study uses numerical simulations with the SST turbulence model to evaluate heat transfer and flow fields over surfaces with equivalent sand grain roughness heights of 50, 100, 250 and 500 μm. The results show that roughness affects the mean velocity profile and wall shear stress in different regions, and can both enhance and reduce heat transfer compared to a smooth

Author

smislamsakib

Language

EN