bubble deformation in flow

mahdinili · October 17, 2011, 12:31

Dear All

I have a problem in modeling of a bubble deformation in a air flow at CFX. During the shape deformation of the bubble, the surface becomes distorted and zigzag and so, the solution diverges. I want to smooth the bubble surface during the shape deformation of bubble by a function in CFX. Is there any smoothing function to damp the zigzag on the bubble surface?

ghorrocks · October 17, 2011, 17:20

Yes, have a look at the free surface smoothing options and other free surface parameters. I remember seeing exactly this effect a while ago and it took a while to find the parameter to fix it - and I have since forgotten what it is (sorry!) so you are going to have to hunt through them and find it yourself.

October 17, 2011, 12:31	bubble deformation in flow	#1
mahdinili New Member mahdi Join Date: Sep 2011 Location: Iraq Posts: 7 Rep Power: 14	Dear All I have a problem in modeling of a bubble deformation in a air flow at CFX. During the shape deformation of the bubble, the surface becomes distorted and zigzag and so, the solution diverges. I want to smooth the bubble surface during the shape deformation of bubble by a function in CFX. Is there any smoothing function to damp the zigzag on the bubble surface?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
mass flow in is not equal to mass flow out	saii	CFX	12	March 19, 2018 05:21
flow over a cylinder urgent!	kevin	FLUENT	8	August 11, 2015 13:00
transform navier-stokes eq. to euler-eq.	pxyz	Main CFD Forum	37	July 7, 2006 08:42
Can 'shock waves' occur in viscous fluid flows?	diaw	Main CFD Forum	104	February 16, 2006 05:44
Urgent!!! Co-current flow in bubble column	anji	FLUENT	0	December 29, 2005 00:39

October 17, 2011, 17:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Yes, have a look at the free surface smoothing options and other free surface parameters. I remember seeing exactly this effect a while ago and it took a while to find the parameter to fix it - and I have since forgotten what it is (sorry!) so you are going to have to hunt through them and find it yourself.