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。
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 construc- ted. 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.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2007年第1期58-62,共5页
Journal of Sichuan University (Engineering Science Edition)
关键词
三维
流速场
VOF法
数值模拟
three-dimensional
velocity field
VOF method
numerical simulation
