Steepening of compression waves in long pipelines

Stone__100 · April 6, 2024, 05:36

Hello, experts
I would like to ask some questions that I have encountered in this forum
I am working on a problem of compression wave propagation in a long pipe. It is well known that compression waves propagating in long pipes will increase the pressure gradient due to nonlinear effects, but my model has not been able to get the desired result (CCM+) without reporting errors, and occasionally the pressure gradient will rise and fall for a certain period of time (according to the budget, this period of time has not reached the decay condition), instead of continuing nonlinear steepening.
I have been distressed for a long time, and I hope the experts present here can give some advice, thank you!

Stone__100 · April 6, 2024, 05:40

I hope you can give some suggestions on turbulence model setup. If anyone else has this problem or a solution, I'd be happy to talk to you about it.

April 6, 2024, 05:36	Steepening of compression waves in long pipelines	#1
Stone__100 New Member Stone Join Date: Apr 2024 Posts: 2 Rep Power: 0	Hello, experts I would like to ask some questions that I have encountered in this forum I am working on a problem of compression wave propagation in a long pipe. It is well known that compression waves propagating in long pipes will increase the pressure gradient due to nonlinear effects, but my model has not been able to get the desired result (CCM+) without reporting errors, and occasionally the pressure gradient will rise and fall for a certain period of time (according to the budget, this period of time has not reached the decay condition), instead of continuing nonlinear steepening. I have been distressed for a long time, and I hope the experts present here can give some advice, thank you!

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April 6, 2024, 05:40		#2
Stone__100 New Member Stone Join Date: Apr 2024 Posts: 2 Rep Power: 0	I hope you can give some suggestions on turbulence model setup. If anyone else has this problem or a solution, I'd be happy to talk to you about it.