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sepp193 December 28, 2009 05:39

froud number open channel flow
I've managed to simulate a standing wave in a river in fluent. I now have the simulation data and would like to obtain the height of the open surface and the froud number.
Does anybody know how to do this?

sepp193 January 4, 2010 16:04

Does anybody know anything?? ;)

jack1980 January 6, 2010 15:09

Sorry I'm not sure I understand your problem correctly, but the answers might be:

Froude Number = u / sqrt(g*d)

u = upstream velocity
g = 9.81 m/s^2
d = water depth

The height of the free surface: The easy straightforward way (for 2D problem) is to plot a single contour of the phase for VOF=0.5, print the plot and measure the height with a ruler. The harder, more accurate way is to export your data to tecplot, although I haven't done this myself yet.

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