Getting the pressure waves in Fluent for a water hammer problem

teopetre · March 5, 2012, 20:39

I bet there is someone throughout this forum who ever worked in simulating the water hammer phenomena, in a pipe. My questions would be:

1. If I choose water as fluid medium, how could I transform it into a compressible fluid, via an UDF, or what MACROs could I use for this.
2. How could I better visualize the subsequent pressure fluctuations.
3. Is there the need to couple with the acoustic module? If yes, is there some tutorials to provide, I would be very grateful.
4. For the case of a sudden appearing crack in the wall pipe, is this situation a bit similar to the genuine water hammer problem?

I would be very appreciative for sharing your experiences!
Thanks in advance!

ndabir · April 23, 2012, 14:42

Hi,

Did you solved your problem? I also need to simulate water as compressible flow. Could you please explain to me how did you solved it? use any udf or special treatments?

ndabir · August 6, 2013, 20:24

were you able to solve your problem? I need help with solving water as compressible flow. what solver did you use?

March 5, 2012, 20:39	Getting the pressure waves in Fluent for a water hammer problem	#1
teopetre New Member Petrut Teodor Join Date: Feb 2010 Location: Romania Posts: 12 Rep Power: 16	I bet there is someone throughout this forum who ever worked in simulating the water hammer phenomena, in a pipe. My questions would be: 1. If I choose water as fluid medium, how could I transform it into a compressible fluid, via an UDF, or what MACROs could I use for this. 2. How could I better visualize the subsequent pressure fluctuations. 3. Is there the need to couple with the acoustic module? If yes, is there some tutorials to provide, I would be very grateful. 4. For the case of a sudden appearing crack in the wall pipe, is this situation a bit similar to the genuine water hammer problem? I would be very appreciative for sharing your experiences! Thanks in advance!

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April 23, 2012, 14:42		#2
ndabir Senior Member navid Join Date: Jan 2010 Posts: 110 Rep Power: 16	Hi, Did you solved your problem? I also need to simulate water as compressible flow. Could you please explain to me how did you solved it? use any udf or special treatments?

August 6, 2013, 20:24		#3
ndabir Senior Member navid Join Date: Jan 2010 Posts: 110 Rep Power: 16	were you able to solve your problem? I need help with solving water as compressible flow. what solver did you use?