After solving the process using the above values, the Nusselt value is found to be 72.685. I chose the 'Scalable Wall Function' for the wall function. By changing the mesh sizes and solving with the RNG model at the same Reynolds number, I obtained the following results. I dont use y+ and i choose quadratic mesh. I try 1mm, 2mm, 4mm, 0.5mm, 0.25mm mesh size(menter lecnher method doesnt convergence 0.5mm and 0.25mm)
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