【摘要】 本文应用量纲分析和相似类比方法,论证紊流力学中的混合长度和涡旋微尺度的物理意义在紊流微结构中都具有波长性质。还论述了紊动波长与涡体运动的关系,并提出在混凝动力学中紊流能耗越大,涡旋微尺度越小,涡体半径越小,而涡体运动(旋转)速度越大的相互关系。为合理控制紊流能耗以提高水力混合絮凝设备效能,提供了理论解释。更多还原

【Abstract】 Based on the dimensional analysis and the simulation theory, the analysis of the mixing length and the micro - vorticity in turbulence hydraulics shows that both of them behave like the Wave length in physics .Deriving the relationship between the wave length of the turbulent motion and the micro -vorticity leads to that the velocity of vortex motion is approximately proportional inversely to the micro - scale or the r.adius of vortex. The concept mentioned above is helpful to explain how to control the turbulence energy dissipation for hydraulic efficient mixing in flocculators.更多还原