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Forum: OpenFOAM Running, Solving & CFD

June 13, 2008, 13:07

Replies: 24

DDt

Views: 12,457

Posted By schmidt_d

An addition to my previous com

An addition to my previous comments. Here is an example using OpenFOAM's built-in total derivative operator to find the total derivative of pressure.

volScalarField DpDt = fvc::DDt(phiv,p)

Forum: OpenFOAM Running, Solving & CFD

September 6, 2006, 08:51

Replies: 24

DDt

Views: 12,457

Posted By schmidt_d

To add to Gavin's explanation

To add to Gavin's explanation and to address your question further, strong conservation is a property of an advection scheme; the concept of strong conservation is not specific to OpenFOAM. If a...

Forum: OpenFOAM Running, Solving & CFD

August 21, 2006, 14:31

Replies: 24

DDt

Views: 12,457

Posted By schmidt_d

One other thing....if you use

One other thing....if you use the continuity equation and produce the conservative form, you have the option of doing this implicitly. For example, with constant density flow, you could get ...

Forum: OpenFOAM Running, Solving & CFD

August 21, 2006, 14:22

Replies: 24

DDt

Views: 12,457

Posted By schmidt_d

Shaun, The only way that I kn

Shaun,
The only way that I know to do this is by hand. Use the fact that DDt(T) is
fvc::ddt(T)+ (U & fvc::grad(T))
Note the extra parentheses with the dot product. The precedence of the &...

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