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

Pressure distribution along hull

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 13, 2008, 04:14
Default Pressure distribution along hull
  #1
sam
Guest
 
Posts: n/a
Hi all,

Doing my final year thesis researching the hydrodynamic characteristics of a submarine using ANSYS CFX software. Wanting to find the pressure coefficient distribution along the length of the hull in CFX Post.

I've done the folloeing so far, but have been unsuccessful in producing a graph of Cp against Length.

Assigned my variable Cp = P/(0.5*rho*U^2)

(i've used specific values for rho and U)

Assinged pressure P = Force (on hull)/Area (area of hull)

Set transverse planes along length of the hull and created polylines from the intersection between the hull and the plane.

In my chart i've selected my polyline as my location as the y variable and my length as x variable.

Any thoughts or comments would be greatly appreciated.

Thanks,

Sam

  Reply With Quote

Old   September 13, 2008, 18:09
Default Re: Pressure distribution along hull
  #2
johnny
Guest
 
Posts: n/a
Why is don't you simply use the variable Pressure instead of calculating P?

You said you want CP vs. Length (x position). Do you want the average Cp value at a given x? I'm not sure you can do this with the charts in CFX. You would need to take the average CP on all of your polylines and export these values and plot them vs. x in Excel or other.
  Reply With Quote

Reply


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
cavitation model pressure distribution Rahmat Arazgaldy FLUENT 1 May 16, 2012 16:48
Airfoil pressure distribution kanishkpanchal Main CFD Forum 2 December 7, 2009 14:21
Pressure Rise Error emueller CFX 0 May 5, 2009 12:08
Does star cd takes reference pressure? monica Siemens 1 April 19, 2007 12:26
Hydrostatic pressure in 2-phase flow modeling (CFX4.2) HB &DS CFX 0 January 9, 2000 14:19


All times are GMT -4. The time now is 11:18.