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November 4, 2008, 07:26 |
The lift force coefficient in bubbly flow
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#1 |
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Lift force coeficient is important tor modeling bubbly flow. In paper "Phase Distribution Measurements during Transient Bubbly Two-Phase Flow in a Vertical Pipe" (Chem.Eng.Technol.23(2000)4), the lift force coeficient is 0.05 for air/water applications. Many other papers give the value of the coefficient as 0.1 for most practical air/water applications, when the results of modeling are fit to experiment datas. With the formulation of Tomiyama(2002), the lift force coeficient is calculated as about 0.3. So I have a little doubt on the the formulation of Tomiyama(2002).
I don't know which is right. I am modeling the bubbly flow of air/oil application. Would you give some advices on the calculation of the lift force coeficient? Thanks! |
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