セッションID: 402
会議情報
主催: 一般社団法人 日本機械学会
会議名: 日本機械学会 関西支部第94期定時総会講演会
開催日: 2019/03/11 - 2019/03/12
多孔体表面のk型及びd型粗さによる乱流構造の比較
詳細
主催: 一般社団法人 日本機械学会
会議名: 日本機械学会 関西支部第94期定時総会講演会
開催日: 2019/03/11 - 2019/03/12
PIV measurements are performed for turbulent channel flows over porous media with structural surface roughness. The roughness elements of k-type and d-type are mounted on the porous media. Logarithmic mean velocity profiles are discussed by considering the log-low over rough and porous walls. In both the k-type and d-type roughness cases, it is found that which is one of the log-law parameters,the equivalent roughness scale, correlates to the combined length scale of porous media and the r.m.s. value of the roughness height.
