空泡在任意流场中的运动研究

The Study of Air Bubble Motion in Arbitrary Flow Field

本文从理论上较全面地分析了空泡在任意流场中的受力,在空泡运动中,考虑了变压场、有气体扩散、流体的可压缩性等因素的影响,建立了空泡在任意流场中的三维运动控制微分方程,给出了计算空泡运动的数值方法,并求解了空泡在一混流式水轮机转轮流场中的运动。

This paper theoretically analyses the forces which act on an air bubble in arbitrary flow field. The influence of variable pressure flow field, air diffusion and compressible fluid are taken into consideration during the process of the air bubble motion. The equation of 3-D motion for air bubble is given in arbitrary flow field. The calculation method of air bubble motion is studied in terms of the equation of motion for air bubble. Finally, the air bubble motion in a Francis water turbine impeller is calculated.