A Three-Dimensional Turbulent Detached Flow With a Horseshoe Vortex

A Three-Dimensional Turbulent Detached Flow With a Horseshoe Vortex
复制标题

具有马蹄涡的三维湍流分离流

DOI：
10.1115/1.3239858
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
S. Honami
S. Honami
中科院分区：
--
文献类型：
--
作者：
J. Ishii;S. Honami

文献摘要

被引文献

相似文献

本文通过实验研究，阐明了带有马蹄涡的三维湍流脱体流动的静动力学机理。用热簇探针测量了流动方向的不稳定性，并测量了壁面压力脉动。采用油膜烟丝技术进行了流场显示。在分离区存在四种类型的旋涡。这些涡流是由不同的过程产生的。分离区分为两部分：I区和II区。包括滑脱点在内的II区水流具有低频波动的动力学特征。提出了一种新的脱体区流动模型。
Static and dynamic mechanisms in a three-dimensional, turbulent, detached flow with a horseshoe vortex, which is encountered in turbomachinery, are clarified experimentally. Flow directional intermittency is obtained by a thermal tuft probe and wall pressure fluctuation survey is performed. Flow visualization is also made by the oil film and smoke wire technique. Four types of vortices exist in the detached region. These vortices are generated by the different process. The detached region is divided into two parts: the region I and II. The flow in the region II, including the detachment point, has dynamic characteristics with low-frequency fluctuation. A new flow model in the detached region is proposed.