yplus value in two phase flow
How is the wall y plus value computed for a two phase gas solid flow of given operating conditions of say superficial gas velocity = 10m/s and superficial solid particle velocity = 3.5 m/s of particle density = 2500 kg/m3 and particle size = 150micron
Referring to FLUENT 6.2 documentation, it is given that yplus value is computed based on y value [ distance of cell adjacent to wall] and frictional velocity
Now how is the frictional velocity computed in case of two phase flows??
Can someone cite a suitable reference if any??
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