NASA CRM Simulation (Abnormal Results for Cl and Cd)

sulmanaziz · May 18, 2012, 12:00

Hi everyone,
I am performing the simulation of NASA CRM using ANSYS Fluent 14.0, I have created an unstructured mesh using ICEM CFD. I have few questions..
1. I don't know why i m getting abnormal values of Cl and Cd..

?
2. Can anyone tell me how to set the reference values..?

May be i have put in the wrong reference values.

The values that i am using are
Area: 4130 ft^2
Length: 1190 ft

I shall b very thankful for your help.

Regards
Sulman Aziz

ghorrocks · May 19, 2012, 08:12

Your question is about Fluent so you shoiuld post there for a detailed response. But in general this FAQ answers your question:
http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

May 18, 2012, 12:00	NASA CRM Simulation (Abnormal Results for Cl and Cd)	#1
sulmanaziz New Member Sulman Aziz Join Date: May 2012 Posts: 8 Rep Power: 14	Hi everyone, I am performing the simulation of NASA CRM using ANSYS Fluent 14.0, I have created an unstructured mesh using ICEM CFD. I have few questions.. 1. I don't know why i m getting abnormal values of Cl and Cd..? 2. Can anyone tell me how to set the reference values..? May be i have put in the wrong reference values. The values that i am using are Area: 4130 ft^2 Length: 1190 ft I shall b very thankful for your help. Regards Sulman Aziz

May 19, 2012, 08:12		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Your question is about Fluent so you shoiuld post there for a detailed response. But in general this FAQ answers your question: http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F