CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Slip boundary condition

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 6, 2020, 04:48
Default Slip boundary condition
  #1
New Member
 
Homayoun Shabani
Join Date: Dec 2019
Posts: 4
Rep Power: 7
homayoun1996 is on a distinguished road
Hi everybody.
I would like to model a micro-channel under slip boundary condition, but I don't have any tutorials or videos, moreover I don't know how to check its accuracy.
I appreciate it if you could help me.
thanks in advance.
homayoun1996 is offline   Reply With Quote

Old   April 6, 2020, 09:04
Default Slip Condition
  #2
Senior Member
 
vinerm's Avatar
 
Vinerm
Join Date: Jun 2009
Location: Nederland
Posts: 2,946
Blog Entries: 1
Rep Power: 36
vinerm will become famous soon enough
The slip condition in microchannels is not always valid. You have to determine if it is valid for your case or not. And there is hardly ever a full slip in a microchannel. For full slip, you can use free-slip condition available; specify shear stress of 0 at the wall. For partial slip, you have to use expression or UDF and you need to decide whether you want first-order or second-order slip model.
__________________
Regards,
Vinerm

PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.
vinerm is offline   Reply With Quote

Reply

Tags
microchannels, slip b.c., slip condition, slip flow, slip wall


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cyclic boundary condition in foam-extend 4.0 rellumeister OpenFOAM Pre-Processing 2 March 3, 2020 09:03
Centrifugal fan j0hnny CFX 13 October 1, 2019 14:55
Basic Nozzle-Expander Design karmavatar CFX 20 March 20, 2016 09:44
Problem in setting Boundary Condition Madhatter92 CFX 12 January 12, 2016 05:39
CFX fails to calculate a diffuser pipe flow shenying0710 CFX 7 March 26, 2013 05:13


All times are GMT -4. The time now is 07:12.