wave problem

nchu286 · February 3, 2010, 03:53

i tried to produce a very simple wave (input wave amplitude,period,and fluid height)and wanted to see the free surface elevation at the most front-end
.I run 100s and the first 40s the elevation is a regular wave but after it ,it suddenly climb it high and became irregular .
So did anyone know where is the problem.Thx
Ps:the fluid is one fluid ,linear

Ghirghidov · February 3, 2010, 08:41

did you use lagrangian VOF method?

nchu286 · February 10, 2010, 06:00

Quote:

Originally Posted by Ghirghidov

did you use lagrangian VOF method?

didn't flow-3d always use the method??

MuxaB · February 10, 2010, 09:37

Could it be because a reflected wave came back to the wave boundary? What do you have as BC on other mesh boundaries?

February 3, 2010, 03:53	wave problem	#1
nchu286 New Member cloud lin Join Date: Dec 2009 Posts: 3 Rep Power: 5	i tried to produce a very simple wave (input wave amplitude,period,and fluid height)and wanted to see the free surface elevation at the most front-end .I run 100s and the first 40s the elevation is a regular wave but after it ,it suddenly climb it high and became irregular . So did anyone know where is the problem.Thx Ps:the fluid is one fluid ,linear

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February 3, 2010, 08:41		#2
Ghirghidov Member Armen A. Ghirghidov Join Date: Mar 2009 Posts: 50 Rep Power: 6	did you use lagrangian VOF method?

February 10, 2010, 09:37		#4
MuxaB Senior Member michael barkhudarov Join Date: Mar 2009 Posts: 317 Rep Power: 7	Could it be because a reflected wave came back to the wave boundary? What do you have as BC on other mesh boundaries?