Generate fan performance curve using Spalart-Allmaras model -- CFD Online Discussion Forums

November 16, 2015, 20:01

Generate fan performance curve using Spalart-Allmaras model

changhee.kim

New Member

changhee kim

Join Date: Feb 2014

Posts: 18

Rep Power: 12

I'm trying to generate fan performance curve using k-e and SA model.

When you see the figure below, (x axis: volume flow rate, y axis: pressure difference)

Orange line was predicted by using k-e turbulence model.

Blue line was generated by using Spalart-Allmaras model.

However, at the low flow rate region, the tendency of two performance curves is totally different!

I wonder why this occurs.

It has same mesh size, same boundary condition.

Attached Images

1.png (52.0 KB, 33 views)

« Previous Thread | Next Thread »

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 Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Considering the operating point instead of the fan curve	saisanthoshm88	CFX	8	August 9, 2012 06:57
Negative reynolds stresses from Spalart Allmaras model	velezisaza	OpenFOAM	0	October 15, 2010 05:49
Numerical integration of Spalart Allmaras turbulence model	RenardP	Main CFD Forum	0	June 11, 2009 14:53
About Spalart Allmaras Model	SUNIL	Main CFD Forum	0	December 2, 2005 06:23
Spalart Allmaras Turbulence model - Need article!	CFD Student	Main CFD Forum	0	December 27, 2004 04:28

All times are GMT -4. The time now is 03:17.