Flow over Broad Crested Weirs： Comparison of 2D and 3D Models
Flow over Broad Crested Weirs： Comparison of 2D and 3D Models作者机构：Department of Civil Engineering Al-Mustansiriayah University Baghdad 1001Iraq Department of Civil Environmental and Natural Resources Engineering Lulea University of Technology 97187 Lulea Sweden
出 版 物：《Journal of Civil Engineering and Architecture》 (土木工程与建筑（英文版）)
年 卷 期：2017年第11卷第8期
页 面：769-779页
学科分类：081504[工学-水利水电工程] 08[工学] 080203[工学-机械设计及理论] 0815[工学-水利工程] 0802[工学-机械工程]
主 题：Broad-crested weir discharge coefficient subcritical flow numerical CFD Fluent.
摘 要：The flow over broad-crested weirs was simulated by computational fluid dynamic model. The water surface profile over broad crested weir was measured in a laboratory model and validated using two and three dimensional Fluent programs. The Reynolds Averaged Navier-Stokes equations coupled with the turbulent standard （k-ε） model and volume of fluid method were applied to estimate the water surface profile. The results of numerical model were compared with experimental results to evaluate the ability of model in describing the behaviour of water surface profile over the weir. The results indicated that the 3D required more time in comparison with 2D results and the flow over weir changed from subcritical flow at the upstream （U/S） face of weir to critical flow over the crest and to supercritical flow at downstream （D/S）. A reasonable agreement was noticed between numerical results and experimental observations with mean error less than 2 %.
维普期刊数据库