Wave generation with decay

monjinz · February 15, 2017, 05:51

I am trying to generate a single wave in CFX (or Fluent) with decay.

Is it possible to model such wave in CFX?

Got to use this equation,

y(t)=A * e^(-lambda*t)*cos(omega* t+phase)

Thank you

mohammad.ramezani · February 15, 2017, 06:01

this essay may help you
Numerical Simulation of Extreme Free Surface Waves
Jan Westphalen1, Deborah Greaves1, Chris Williams2, Jun Zang2, Paul Taylor3

monjinz · February 15, 2017, 20:47

Thank you for your help, Mohammad.

By the way, I can't access the journal online. Could you please send me one via email if you have this?

My email address is monjinz@hotmail.com

Cheers

highorder_cfd · February 16, 2017, 06:22

Hi

Yes, this should be possible in CFX by implementing few expressions.
Actually there is an ANSYS tutorial setting up a similar case. You can download it from the ANSYS customer portal, the tutorial is included in the CFX FSI Training (it is the case with rigid body solver).

In Fluent if you use open channel model there are already some wave boundary conditions implemented, so you will need to specify a wave theory and few input parameters.

I hope this helps.

mohammad.ramezani · February 16, 2017, 11:41

Hi
I sent them to your mail

monjinz · February 24, 2017, 05:03

Quote:

Originally Posted by mohammad.ramezani

Hi
I sent them to your mail

I haven't received any. I am sorry but could you be able to send them again?

I appreciated your help

monjinz@hotmail.com

February 15, 2017, 05:51	Wave generation with decay	#1
monjinz New Member Chan Joo Kim Join Date: Feb 2017 Posts: 5 Rep Power: 9	I am trying to generate a single wave in CFX (or Fluent) with decay. Is it possible to model such wave in CFX? Got to use this equation, y(t)=A * e^(-lambdat)cos(omega* t+phase) Thank you Last edited by monjinz; February 16, 2017 at 02:40.

February 15, 2017, 06:01		#2
mohammad.ramezani New Member mohammad.ramezani Join Date: Dec 2015 Posts: 12 Rep Power: 10	this essay may help you Numerical Simulation of Extreme Free Surface Waves Jan Westphalen1, Deborah Greaves1, Chris Williams2, Jun Zang2, Paul Taylor3 monjinz likes this.

February 16, 2017, 06:22		#4
highorder_cfd Member Join Date: Jan 2015 Posts: 63 Rep Power: 11	Hi Yes, this should be possible in CFX by implementing few expressions. Actually there is an ANSYS tutorial setting up a similar case. You can download it from the ANSYS customer portal, the tutorial is included in the CFX FSI Training (it is the case with rigid body solver). In Fluent if you use open channel model there are already some wave boundary conditions implemented, so you will need to specify a wave theory and few input parameters. I hope this helps. mohammad.ramezani and monjinz like this.

February 16, 2017, 11:41		#5
mohammad.ramezani New Member mohammad.ramezani Join Date: Dec 2015 Posts: 12 Rep Power: 10	Hi I sent them to your mail monjinz likes this.

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February 15, 2017, 20:47		#3
monjinz New Member Chan Joo Kim Join Date: Feb 2017 Posts: 5 Rep Power: 9	Thank you for your help, Mohammad. By the way, I can't access the journal online. Could you please send me one via email if you have this? My email address is monjinz@hotmail.com Cheers