C111 剥離乱流DNSデータを用いた乱流モデルの検証(OS-5:乱流伝熱の実験とCFDの融合(1))
詳細
Turbulence model testing has been made for the k-e model proposed by Abe-Kondoh-Nagano [Int. J. Heat Mass Transfer, 37 (1994), 139] using data obtained from a direct numerical simulation (DNS) of a separated flat-plate turbulent boundary layer. The Reynolds number at the inlet is set to be Re_θ=300 where Re_θ is the Reynolds number based on the freestream velocity and the momentum thickness. It is shown that the model calculation for a large separation bubble predicts the location of the separation point too early and yields large reversal flow due to the underprediction of the eddy viscosity near the wall.
