Numerical simulation of turbulent boundary for stagnation-flow in spray-painting processes
نویسندگان
چکیده
The present paper is primarily concerned with modeling complex turbulent wall-bounded flow in spray-painting processes by using a commercial CFD code. Computational results of turbulent channel flow with low Reynolds numbers are compared with DNS data in order to obtain the performance of turbulence models and near wall treatments. The realizable k-ε model with the nonequilibrium wall function and the enhanced wall treatment is employed in the simulation of air flow in spray painting processes. Simulated results are presented with the main focus on the near wall turbulence. Effects of wall-mesh solution and different wall treatments on distributions of velocity and turbulent kinetic energy are analyzed and discussed.
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