不同间距沙波纹流场结构研究
首发时间:2009-04-01
摘要:沙波纹表面的流场变化研究对于研究沙波纹的发展变化有很重要的意义。本文通过模拟对称型沙波纹的流场,以不同间距的沙波纹流场结构变化为基本研究对象得出了沙波纹在同雷诺数、不同间距情况下的速度廓线的发展变化。同时得出在沙波纹顶部的流场变化趋势,以及沙波纹后流场的分离、回流趋势。
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The Research about The Structure of Sand Ripples Flow Field in Different Spacing
Abstract:The studay of the changes of flow field on the surface of sand ripples has vary important significance to the research of development of sand ripples. Though the simulation of symmeprical sand ripples of flow filed, this thesis takes the change of structure of sand ripples of flow filed in different spacing as fundamental research object and get the development and change of the contour line of speed in different Reynolds number and different distance. What more, the author obtain the changing trends of flow filed on the top of the sand ripples,as well as the trend of the separation and reflow on the back of the sand ripples.
Keywords: sand ripple flow structure k-ε model numerical simulation
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No.3097143061812385****
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