NUMERICAL AND EXPERIMENTAL INVESTIGATION OF FTOW OVER A SEMTCIRCULAR WEIR

• 来源期刊: 力学学报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（6）
• 页码范围: 594-602
• 页数: 9页
• 分类号: O3
• 语种: 英文

摘要

The water flow over a semicircular weir is investigated numericallyand experimentally in this paper. The numerical model solves the Reynolds equationfor a mean flow field with the κ-ε turbulent model. To trace the motion of the freesurface, the VOF method with geometric reconstruction is employed. The velocity ofthe flow is measured by means of LDV technique. Four types of flow patterns, theposition of the separation and reattachment point, the distribution of shear stresson the bed at downstream of the weir are presented and discussed. The numericalresults agree well with the experiment data.