PCV valve simulation - FSI?

farianka · April 19, 2011, 06:23

Can anyone advise me on how to simulate flow through PCV valve? Do I use FSI method and if so, 1-way or 2-way? Thanks a lot.

ghorrocks · April 19, 2011, 06:42

What is a PCV valve?

farianka · April 19, 2011, 08:20

Hi Glenn,
PCV reffers to Positive Crankcase ventilation system. There is quite a good description on this link incl. images. http://www.buet.ac.bd/me/icme/icme20...ME05-FL-08.pdf
Basically, valve of semi cylindrical/conical shape with small cylinder inside which is attached to valve via spring. The flow of air through valve is regulated by position of this small cylinder (simillar to ball valve or check valve). I have no experience with immersed solid simulations, I suspect this is it and just want the advise which type of Ansys simulation to use to find out what preload should the spring have to maintain the piston/culinder in certain position to allow certain volume flow.
Thanks a lot

singer1812 · April 19, 2011, 10:33

Are you sure you need FSI? Can you just model this as a series of solutions with the valve in fixed position and get the forces on it that way?

If you feel you need a transient moving valve solution, please look up the ball valve tutorial/example that is well known in CFX. They have done that example with moving mesh and immersed solids (I believe).

April 19, 2011, 06:23	PCV valve simulation - FSI?	#1
farianka New Member Join Date: Oct 2010 Posts: 9 Rep Power: 15	Can anyone advise me on how to simulate flow through PCV valve? Do I use FSI method and if so, 1-way or 2-way? Thanks a lot.

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April 19, 2011, 06:42		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	What is a PCV valve?

April 19, 2011, 08:20		#3
farianka New Member Join Date: Oct 2010 Posts: 9 Rep Power: 15	Hi Glenn, PCV reffers to Positive Crankcase ventilation system. There is quite a good description on this link incl. images. http://www.buet.ac.bd/me/icme/icme20...ME05-FL-08.pdf Basically, valve of semi cylindrical/conical shape with small cylinder inside which is attached to valve via spring. The flow of air through valve is regulated by position of this small cylinder (simillar to ball valve or check valve). I have no experience with immersed solid simulations, I suspect this is it and just want the advise which type of Ansys simulation to use to find out what preload should the spring have to maintain the piston/culinder in certain position to allow certain volume flow. Thanks a lot

April 19, 2011, 10:33		#4
singer1812 Senior Member Edmund Singer P.E. Join Date: Aug 2010 Location: Minneapolis, MN Posts: 511 Rep Power: 20	Are you sure you need FSI? Can you just model this as a series of solutions with the valve in fixed position and get the forces on it that way? If you feel you need a transient moving valve solution, please look up the ball valve tutorial/example that is well known in CFX. They have done that example with moving mesh and immersed solids (I believe).