AM05-24-004 鉛直円管内気液二相乱流の乱流構造変化 : 高速度PIVを用いたエネルギ輸送機構の解析(混相流・機能性流体1,一般講演)

概要

論文の詳細を見る
The objective of the present study is to investigate the effects of bubbles on modification of turbulent structure by time-series measurements using a high speed time-resolved PIV. The experiments were carried out in a fully developed vertical pipe with upward flow of water at the Reynolds number of 9700 and the void fraction of 0.5%. We analyzed the effects of bubbles on the modification of energy cascade process by using Blackman-Tukey method. It is observed that energy spectra in the case of bubbly flow increased drastically compared to that in the case of single phase. Further insight into the energy transport by bubbles, we applied a filtering technique, which is used in large eddy simulation to, flow field.
日本流体力学会の論文
2005-09-05