froud number open channel flow

sepp193 · December 28, 2009, 05:39

Hi!
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?
Thanks

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.

December 28, 2009, 05:39	froud number open channel flow	#1
sepp193 New Member Join Date: Dec 2009 Posts: 2 Rep Power: 0	Hi! 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? Thanks

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Boundary condition problem for open channel flow	Andy	CFX	9	June 11, 2016 08:20
Yacht in Open Channel Flow	andreimour	FLUENT	1	October 15, 2010 00:54
open channel flow with a layer of air	Naomi	CFX	1	November 15, 2008 07:34
Open Channel Flow	Ryan	FLUENT	1	March 17, 2008 11:10
Open channel flow with FLUENT 6.1.22	Walid	FLUENT	0	July 11, 2006 03:16

January 4, 2010, 16:04		#2
sepp193 New Member Join Date: Dec 2009 Posts: 2 Rep Power: 0	Does anybody know anything??

January 6, 2010, 15:09		#3
jack1980 Senior Member Jouke de Baar Join Date: Oct 2009 Posts: 127 Rep Power: 17	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.