基于全面力量平衡模型,在在经常的流动率下面的非牛顿的液体的一个单个水泡的形成的一个修改模型被在光线的扩大上通过孔以及它的变化考虑进来的气体的效果开发起泡。修改模型分别地在水泡的垂直方向包含水泡表面的光线的扩大方程和力量平衡方程。在 polyacrylamide (PAM ) 形成的水泡的形状变化在各种各样的条件下面的水的答案数字地被预言。水泡的实际形成是即时的借助于一个特殊激光图象测量系统由一个电荷耦合器件照相机和一台计算机设想了并且记录。结果证明由现在的模型的水泡的预言的形状与试验性的观察同意很好。
Based on the comprehensive forces balance model, a modified model of the formation of a single bubble in non-Newtonian fluid under constant flowrate was developed by taking account of the effect of the ingoing gas through orifice as well as its variation on the radial expansion of bubble. The modified model involves the radial expansion equation of bubble surface and the forces balance equation in vertical direction of the bubble respectively. The shape variation of bubbles formed in polyacrylamide (PAM) aqueous solutions under various conditions was predicted numerically. The practical formation of bubbles was real-time visualized and recorded by a CCD camera and a computer by means of a special laser image measurement system. Results show that the predicted shapes of the bubbles by the present model agree well with experimental observation.