A Soluble Model for Foam Drainage

摘要: A model is set up which believed to contain the essential physics of foam drainage. Mathematically, leads a non-linear partial differential equation, we were able solve exactly by analytical methods for physical boundary conditions relevant recent experiments in dry wetted steady addition liquid. The solution represents density wave constant profile (or solitary wave) qualitative accord with these experiments. observed dependences liquid fraction and wet/dry velocity on input flow are reproduced model.