CFX capability

sharif88 · February 9, 2014, 16:57

I was wondering if it is possible to simulate turbulent flow of non-Newtonian fluids using CFX,
The material is a power law fluid which is a polymer,
The main goals of the simulation is to get the velocity profiles, Reynolds stresses (Pressure drop is also important because it supposes to be a drag reducing flow).
Thanks

ghorrocks · February 10, 2014, 04:23

I have not checked but I suspect it is possible to run a non-Newtonian model with a turbulence model, but the question of whether it is accurate is another issue. There are no turbulence models widely accepted to my knowledge for non-Newtonian flows. So I would be very careful with these models and do thorough validation.

And the situation is the same for all CFD codes - it is current research to apply a turbulence model to non-Newtonian flows, so I doubt you will find anyone can do it easily.

But if you don't care about accuracy and all you want is a turbulence model and a non-Newtonian flow model then, yes, CFX can probably do it.

February 9, 2014, 16:57	CFX capability	#1
sharif88 New Member Majid Join Date: Jan 2014 Location: Canada Posts: 23 Rep Power: 12	I was wondering if it is possible to simulate turbulent flow of non-Newtonian fluids using CFX, The material is a power law fluid which is a polymer, The main goals of the simulation is to get the velocity profiles, Reynolds stresses (Pressure drop is also important because it supposes to be a drag reducing flow). Thanks

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
CFX Treatment of Laminar and Turbulent Flows	Jade M	CFX	18	September 15, 2022 07:08
High Resolution (CFX) vs 2nd Order Upwind (Fluent)	gravis	ANSYS	3	March 24, 2011 02:43
ATTENTION! Reliability problems in CFX 5.7	Joseph	CFX	14	April 20, 2010 15:45
CFX pressure in Simulations problem	nasdak	CFX	1	April 14, 2010 13:22
Different flow pattern between OpenFOAM and CFX	AirS	OpenFOAM	0	January 12, 2010 07:08

February 10, 2014, 04:23		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,696 Rep Power: 143	I have not checked but I suspect it is possible to run a non-Newtonian model with a turbulence model, but the question of whether it is accurate is another issue. There are no turbulence models widely accepted to my knowledge for non-Newtonian flows. So I would be very careful with these models and do thorough validation. And the situation is the same for all CFD codes - it is current research to apply a turbulence model to non-Newtonian flows, so I doubt you will find anyone can do it easily. But if you don't care about accuracy and all you want is a turbulence model and a non-Newtonian flow model then, yes, CFX can probably do it.