Tank wavemaker

Turbulent · June 22, 2009, 18:04

Hello,

I'm trying to simulate a tank wavemaker in CFX as oscillatory moving wall but has some problems running the file.
If anyone has suggestions I woul'd be more than happy to hear.

the .cfx and .def files can be found here: http://ifile.it/3wgqre4

Thanks,
Jack

ckleanth · June 22, 2009, 20:39

instead of creating a moving mesh why you dont define a variable velocity inlet using linear wave theory?

outlet and top I'd use an open boundary, for the outflow a cel pressure definition taking into account hydrostatic and air pressure

Turbulent · June 23, 2009, 13:32

Hi,

Thanks for you answer. I've tried this in the past but with outflow BC on the outlet you don't know the water level in order to define pressure (it suppose to come from the solution. If you decide to define it by yourself you get a singular point on the water-air interface at outflow.

Jack

June 22, 2009, 18:04	Tank wavemaker	#1
Turbulent New Member Jack B. Join Date: Apr 2009 Posts: 24 Rep Power: 17	Hello, I'm trying to simulate a tank wavemaker in CFX as oscillatory moving wall but has some problems running the file. If anyone has suggestions I woul'd be more than happy to hear. the .cfx and .def files can be found here: http://ifile.it/3wgqre4 Thanks, Jack

June 22, 2009, 20:39		#2
ckleanth Senior Member George Join Date: Mar 2009 Location: Birmingham, UK Posts: 257 Rep Power: 18	instead of creating a moving mesh why you dont define a variable velocity inlet using linear wave theory? outlet and top I'd use an open boundary, for the outflow a cel pressure definition taking into account hydrostatic and air pressure __________________ Top 4 tips 1. Knowledge is everything and Ignorance is dangerous. 2. Understand your limitations and try to eliminate them. 3. Get yerself a bike and hoon the chuffer. You will soon learn why dogs like to hang their heads out the car window. 4. Please before asking any questions on how to run simulations in CFX, go though all the tutorials

June 23, 2009, 13:32	Answer	#3
Turbulent New Member Jack B. Join Date: Apr 2009 Posts: 24 Rep Power: 17	Hi, Thanks for you answer. I've tried this in the past but with outflow BC on the outlet you don't know the water level in order to define pressure (it suppose to come from the solution. If you decide to define it by yourself you get a singular point on the water-air interface at outflow. Jack

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