Applying slip velocity

whosays · March 3, 2015, 16:31

Hi, I am investigating about microchannels with bends. I need to apply the slip velocity but not too sure how. Ansys only gives you to enter the shear stresses and even so it is not clear as to how to calculate them.

Any ideas?

Also, should I use UDF inorder to apply slip velocity? If so can you give me some clues or even an example as to how to do this please?

Thanks for your help in advance.

(New to ANSYS)

`e` · March 5, 2015, 21:31

Have you read the section on 'Relative (Slip) Velocity and the Drift Velocity' in the Theory Guide? If there are additional forces to apply to the fluid, consider using a custom drag law with a DEFINE_EXCHANGE_PROPERTY UDF.

March 3, 2015, 16:31	Applying slip velocity	#1
whosays New Member Cheeky monkey Join Date: Mar 2015 Posts: 3 Rep Power: 11	Hi, I am investigating about microchannels with bends. I need to apply the slip velocity but not too sure how. Ansys only gives you to enter the shear stresses and even so it is not clear as to how to calculate them. Any ideas? Also, should I use UDF inorder to apply slip velocity? If so can you give me some clues or even an example as to how to do this please? Thanks for your help in advance. (New to ANSYS)

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
Difficulty in calculating angular velocity of Savonius turbine simulation	alfaruk	CFX	14	March 17, 2017 06:08
Slip velocity multiphase FLUENT	cfd^2	FLUENT	0	March 6, 2014 14:36
Problem with time average tangential velocity in swirl flow.	lakhi	FLUENT	5	July 18, 2012 16:28
slip velocity	selvam R.P	CFX	1	January 12, 2006 22:16
How to compute an average slip velocity using DPM	thomas	FLUENT	0	February 9, 2004 08:17

March 5, 2015, 21:31		#2
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	Have you read the section on 'Relative (Slip) Velocity and the Drift Velocity' in the Theory Guide? If there are additional forces to apply to the fluid, consider using a custom drag law with a DEFINE_EXCHANGE_PROPERTY UDF.