Numelical Simulation of Turbulent Flow in Two-dimensional Channel with Arbitrary Inlet Disturbance

概要

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Turbulent flows in a hydrodynamic entrance region of a plane channel with various inlet disturbances for Re=42000 were numerically simulated and compared with the experimental results reported earlier. The simulation was based on the parabolized Reynolds equation of motion together with three types of turbulence models-- mixing length mode, k-ε model and stress equation mode. The development of time mean quantities was well predicted except just downstream of the inlet section. The turbulence quantities in the downstream region obtained by the higher order models were also in good agreement with the measured data. The disagreement, which was most pronounce in the inlet region, was not improved even by the employment of the higher order models.
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