粗度要素による抵抗を考慮したk-ε乱流モデルによる乱流境界層の数値計算

Abstract

Turbulent flows in and above the roughness elements are studied using a refined k-ε turbulence model. The model are derived from the Navier-Stokes equations by the time space averaging operations in consideration of the drag effect by roughness elements. The coefficients in the model are examined by the experimental data. The wind velocity profiles and the turbulent energy profiles vary with the drag coefficient and the length scale.