CFD analyses and validation of multiphase flow in micro-fluidic system
Multiphase ows involving the ow of two or more uids are becoming increasingly im-portant in micro- uidic systems because of their potential and projected use as micro-reactors, theproduction and control of emulsion droplets and their use in analytical devices such as the μTASsystems. In this work we examine the ability of the Volume of Fluid method (VOF model) availablein major computational uid dynamics (CFD) software such as Fluent and used widely in modelingthe motion of interfaces in macroscopic systems to model multiphase micro- uidic systems accurately.In contrast to macroscopic systems multiphase ows in micro- uidic channels tend to be laminarand dominated by surface tension and wall adhesion. We demonstrate the ability of the VOF modelto capture the qualitative and quantitative aspects of multiphase ow in micro- uidic channels byvalidating its predictions with experimental observations and/or analytical solutions. The problemsfor which we have validated the VOF model include the classical case of uid rise in capillaries andformation of droplets due to the flow of immiscible uids in a T junction. Based on these results webelieve that the VOF model is ideally suited to model many micro- uidic devices involving the flowof two or more immiscible fluids.
multi phase flow VoF model capillary rise
C.M.Sewatkar S.Dindorkar S.Jadhao
Department of Mechanical Engineering, College of Engineering, Pune-411005, India
国际会议
The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)
上海
英文
2007-08-15（万方平台首次上网日期，不代表论文的发表时间）