|
[Sponsors] |
How to compute the second derivative of pressure |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
|
December 10, 2008, 23:33 |
Hi All,
I would like comput
|
#1 |
Senior Member
Senthil Kabilan
Join Date: Mar 2009
Posts: 113
Rep Power: 17 |
Hi All,
I would like compute the second derivative of p with respect to x, y and z and also impose a boundary condition that the second derivative of p wrt the normal direction is zero at the outlets. Where should I start? Anyone solved a similar problem? Any help will be very much appreciated. Thanks all in advance! Senthil |
|
December 22, 2008, 15:53 |
volScalarField dpdx = fvc:grad
|
#2 |
Member
Heng Xiao
Join Date: Mar 2009
Location: Zurich, Switzerland
Posts: 58
Rep Power: 17 |
volScalarField dpdx = fvc:grad(p);
volScalarField dp2dxx = fvc:grad(dpdx); Would that work? Not tried. I computed gradient of p only. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Derivative | J.Y.Shin | FLUENT | 0 | February 5, 2007 00:34 |
Compute/estimat velocity from pressure driven-flow | Mecobio | Main CFD Forum | 1 | July 29, 2006 13:06 |
Derivative and double-Derivative for steep functio | Kali Sanjay | Phoenics | 1 | March 27, 2006 07:51 |
how to compute the pressure drop! | jpliu | FLUENT | 1 | August 5, 2005 08:06 |
how to compute the pressure of automotive body | ele | FLUENT | 1 | March 26, 2001 19:06 |