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工程科学与技术:2007,39(1):58-62
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河道水流三维流速场的数值模拟研究
(1.四川大学 水利水电学院,四川 成都 610065;2.四川大学 水力学与山区河流开发保护国家重点实验室,四川 成都 610065)
Numerical Simulation Study on Three-dimensional Velocity Field of Fluvial Channel Current
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投稿时间:2006-07-15    
中文摘要: 为了寻求一种先进的数值模拟方法来研究河段水流的流场特性,采用VOF紊流数学模型对大渡河安顺场堤防工程兴建河段建堤前后的水流流速场进行了三维数值模拟研究,模拟计算了该河段堤防兴建前后流速场内流速大小、方向、水位等的变化情况。计算表明,VOF紊流数学模型是一种处理复杂自由表面的有效方法。该法不仅具有稳定性好,灵活性强和精度高的优点,而且网格划分灵活,因此能较好地模拟不规则河道边界,很适合于天然河道三维水流流速场问题的数值模拟研究。
中文关键词: 三维  流速场  VOF法  数值模拟
Abstract:In order to seek an advanced numerical simulation method to study the flow field characteristic of the river current,this article uses the VOF turbulent flow mathematical model to simulation study of fluvial channel velocity field of river stretch both before and after the Anshunchang embankment be constructed. The change situation of velocity of flow, the direction, the water level and so on are compared before and after the embankment be constructed. The simulative computation indicates that the VOF turbulent flow mathematical model is an effective method for processing complex free surface.This method not only has good stabilization, strong flexibility and high accuracy precision, but also the grid division is flexible, therefore can simulate the irregular river course boundary well, thus suits to the simulation of natural river velocity field.
文章编号:20070112     中图分类号:    文献标志码:
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张光碧,邓军,刘超.河道水流三维流速场的数值模拟研究[J].工程科学与技术,2007,39(1):58-62.
.Numerical Simulation Study on Three-dimensional Velocity Field of Fluvial Channel Current[J].Advanced Engineering Sciences,2007,39(1):58-62.