不同弯度水渠二维水流运动数值模拟研究  

Two dimensional numerical simulation of flow transport in different camber of canals

作　　者：杨程[1] 

机构地区：[1]北方民族大学土木工程学院,宁夏银川750021

出　　处：《宁夏工程技术》2015年第2期132-137,共6页Ningxia Engineering Technology

基　　金：国家自然科学基金重大研究计划(91230111);北方民族大学科学研究资助项目(2014XYZ06)(2014XBZ16)

摘　　要：为了研究水流对渠弯的影响,建立了水流运动的二维紊流数学模型,采用非结构网格有限体积法,通过实验室连续弯道的算例,验证了数学模型的正确性,并对4种不同弯度水渠的水流运动进行了数值模拟.结果表明,模拟值符合弯道水流运动的基本规律;在相同的水力参数下,随着渠弯角度的增加,水流对渠弯左岸的侵蚀明显降低;验证了在渠弯设计中对渠弯角度的规定是合理的.To study the effects of water on the bend of the canal, two- dimensional mathematical model of turbulent water movement is established, and the governing equations of the model are discretized with finite volume method（FVM） on unstructured grids. A continuous laboratory curve is used to verify the correctness of the mathematical model. The water movement of three different drains is simulated. The results show that the numerical value in line corresponded with the basic laws of bend flow movement. At the same hydraulic parameters, the angle of bend of drains increases, the erosion on the left bank of the bend of drains significantly reduced. It was verified that drainage camber angle provisions is reasonable in the design.

关 键 词：水渠 数值模拟 非结构网格 有限体积法 

分 类 号：TV131[水利工程—水力学及河流动力学] O242.1[理学—计算数学]