CFD Online Logo CFD Online URL
Home > Forums > CFX

Static Pressure & Hydrostatic Pressure

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   March 7, 2004, 21:56
Default Static Pressure & Hydrostatic Pressure
Posts: n/a
Dear all,

What's the difference between Static (Thermodynamic) Pressure and Hydrostatic Pressure? Any example or some equations to show the difference?

Your any answer will be highly appreciated.

  Reply With Quote

Old   March 9, 2004, 04:17
Default Re: Static Pressure & Hydrostatic Pressure
Posts: n/a
Helloo,, I'm not an experince person, however I think the hydrostatic pressure is related to stationary liduid whereas the static is dealing with gases in closed container. I may be wrong! Let's hear from the rest
  Reply With Quote

Old   March 9, 2004, 19:05
Default Re: Static Pressure & Hydrostatic Pressure
Glenn Horrocks
Posts: n/a
Hi Liwau,

Static pressure is the pressure of the fluid at that point. Total pressure is static pressure plus the dynamic head (0.5*density*V^2), and represents the static pressure which would result if a moving fluid was brought to rest with no losses - the pressure would increase due to Bernoulli. Hydrostatic pressure is the pressure in a fluid due to the weight of fluid above it, for instance air pressure is a result of the weight of air in the atmosphere above you.

In CFX, static and total pressures are available in CFX-Post. Hydrostatic pressure is only applicable when you have defined a gravity vector, and this is usually for a natural convection simulation.

Regards, Glenn
  Reply With Quote


Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
error: uninitialized local variable 't' used MASOUD Fluent UDF and Scheme Programming 5 October 17, 2016 04:24
simple model, difficult outlet Eric CFX 7 May 23, 2014 08:13
Static pressure problem Kiat110616 CFX 0 April 12, 2011 13:11
enum MASOUD Fluent UDF and Scheme Programming 0 June 5, 2010 00:49
negative static pressure Selo melo FLUENT 5 December 18, 2006 10:30

All times are GMT -4. The time now is 16:07.