C133 自然対流境界層における乱流挙動のPIV計測と精度評価(C-13 乱流熱物質移動および反応流(1),一般講演)

概要

論文の詳細を見る
A turbulent natural-convection boundary layer along a vertical heated plate was measured with PIV. In consequence, it is founded that turbulent statistics with the PIV were approximately consistent with those obtained with a hot- and cold-wires. However, it is questioned whether the instantaneous turbulent behavior is faithfully captured with the PIV. So that, database of visualized images were established with a direct numerical simulation (DNS) for a time-developing turbulent boundary layer on a flat plat to confirm the accuracy of PIV measurement. By comparing the calculated vectors with those obtained directly from the DNS, it is ascertained for a turbulent natural-convection boundary layer that the laser-sheet width has no effect on the calculated velocity vectors and the size of interrogation windows should be relatively enlarged to calculate accurate velocity vectors.
日本流体力学会の論文
2004-08-09