摘要
理论分析和数值计算发现空泡在其最小泡半径附近时,空泡周围存在一个很薄的高压区域。该区域的压强对黏性的影响已不可忽略。结合黏性与压强的关系对原空泡动力学方程做了相应修正并完成了数值模拟工作。研究发现,修正模型较原有模型更加接近实验值,同时总结了黏性对空泡动力学的影响规律,并得出了与已报道文献一致的结论。
Theoretical investigations and numerical simulations show that there is a high pressure layer around the bubble while the bubble approaches its minimum radius.The equation of bubble dynamics is modified by the relation of viscosity and pressure.The result is obtained by numerical simulation.Compared with the original model,the simulation values obtained by the modified equation approximated to the experimental results,and the behavior of cavitation bubble dynamics on different viscosities is in agreement with the conclusions drawn in references.
出处
《中国农村水利水电》
北大核心
2011年第4期156-158,161,共4页
China Rural Water and Hydropower
关键词
黏性
压强
空泡
空化
数值计算
viscosity
pressure
bubble
cavitation
numerical simulation
