Cp (Pressure coefficient) using OpenFOAM

hfs · July 21, 2012, 22:30

Hello everyone!

I am doing a wind simulation on a membrane. I am interested in the Cp values on the membrane surface... any ideas how to get it?

Thank you!

Rider · August 22, 2012, 09:52

Hi,

I use this thread to ask my question.

How can I get this type of pressure coefficient (Cp) graph? (cf. picture)

Thanks

Rider · August 30, 2012, 08:16

anybody ?

Tobi · September 11, 2012, 09:47

Pressure coefficent ?
Do you mean the lift and drag coefficents?

Tobi

Rider · September 12, 2012, 09:30

Not really. I have my lift and drag coefficients (Cl and Cd), but I would like to see the distribution of the pressure around the geometry.

aerogt3 · September 26, 2012, 05:29

You can calculate them very easily inside of paraview. Then they can be display in the same way as any other variable.

Rider · September 26, 2012, 06:03

Can you explain me how to do that ?

Thanks

aerogt3 · September 26, 2012, 08:31

Quote:

Originally Posted by Rider

Can you explain me how to do that ?

It's very easy. Select the data you want to operate on (the full case, a single surface you have extracted, etc.) Highlight that and click the calculator button, or go
Filters > Alphabetical > Calculator.

You can select point or cell data, and then use it as a normal calculator, using the Scalar/Vector variables available at the bottom. Hit apply and it will calculate.

Doug68 · November 8, 2012, 08:54

Hi,

I am struggling with a similar issue to Rider, trying to work out the center of pressure for a shape.
Search has failed me so far, any advice would be appreciated.

Thanks.

July 21, 2012, 22:30	Cp (Pressure coefficient) using OpenFOAM	#1
hfs Member Join Date: Jul 2012 Posts: 66 Rep Power: 13	Hello everyone! I am doing a wind simulation on a membrane. I am interested in the Cp values on the membrane surface... any ideas how to get it? Thank you!

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
Pressure coefficient	Giuseppe	FLUENT	2	July 26, 2015 03:19
Water subcooled boiling	Attesz	CFX	7	January 5, 2013 03:32
Pressure BC for combustion chamber	Giuki	FLUENT	1	July 19, 2011 11:35
How to apply negtive pressure to outlet	bioman66	CFX	5	June 3, 2006 01:40
Problem in Result of the pressure coefficient	Ken Choi	Main CFD Forum	2	March 15, 1999 04:15

August 22, 2012, 09:52		#2
Rider Member Join Date: Apr 2012 Location: France Posts: 72 Rep Power: 14	Hi, I use this thread to ask my question. How can I get this type of pressure coefficient (Cp) graph? (cf. picture) Thanks

August 30, 2012, 08:16		#3
Rider Member Join Date: Apr 2012 Location: France Posts: 72 Rep Power: 14	anybody ?

September 11, 2012, 09:47		#4
Tobi Super Moderator Tobias Holzmann Join Date: Oct 2010 Location: Tussenhausen Posts: 2,708 Blog Entries: 6 Rep Power: 51	Pressure coefficent ? Do you mean the lift and drag coefficents? Tobi

September 12, 2012, 09:30		#5
Rider Member Join Date: Apr 2012 Location: France Posts: 72 Rep Power: 14	Not really. I have my lift and drag coefficients (Cl and Cd), but I would like to see the distribution of the pressure around the geometry.

September 26, 2012, 05:29		#6
aerogt3 Member Join Date: Mar 2009 Posts: 90 Rep Power: 17	You can calculate them very easily inside of paraview. Then they can be display in the same way as any other variable.

September 26, 2012, 06:03		#7
Rider Member Join Date: Apr 2012 Location: France Posts: 72 Rep Power: 14	Can you explain me how to do that ? Thanks

November 8, 2012, 08:54		#9
Doug68 Member Join Date: Nov 2010 Posts: 62 Rep Power: 15	Hi, I am struggling with a similar issue to Rider, trying to work out the center of pressure for a shape. Search has failed me so far, any advice would be appreciated. Thanks.