CFD Online Discussion Forums

Convergence of discrete adjoints

Posted July 6, 2010 at 13:12 by praveen (CFD, Numerical Analysis, Scientific Computing)

Interesting result on discrete adjoints: They show that discrete adjoint for scalar conservation law converges pointwise everywhere except at shocks, provided the numerical dissipation increases as the grid is refined. The number of points across the shock must increase as the grid is refined.

http://link.aip.org/link/?SNA/48/882/1&agg=rss

Convergence of Linearized and Adjoint Approximations for Discontinuous Solutions of Conservation Laws. Part 1: Linearized Approximations...

praveen

Super Moderator

Posted in Numerical Methods, Journal Papers

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OpenFOAM has this cool feature

Posted July 2, 2010 at 10:30 by xinyu

For my future reference

Quote:

Originally Posted by gschaider

OpenFOAM has this cool feature named functionObjects of which the only incarnation I've seen so far is the probesFunctionObject. functionObject enables the user to "add" code to the solver at runtime (without recompiling it) that is executed at every time-step.

I have published a collection of such function objects on
http://openfoamwiki.net/index.php/Co...unctionObjects
that do simple evaluations that are sometimes

...

xinyu

New Member

Posted in Uncategorized

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List of threads useful for building OpenFOAM and other Third Party tools

Posted April 8, 2010 at 15:05 by wyldckat
Updated December 8, 2013 at 10:37 by wyldckat (Added a few more links...)

Tags install, installing, openfoam, thirdparty

Well, I've been meaning to this for a while now, so here goes - This a list of threads that could prove useful to new comers to OpenFOAM on how to build it as well as the Third Party tools.

Keep in mind:

That this isn't going to answer all of the questions you might have, but should help you with the more usual issues you might have.
The solution you seek might only come along after reading most of the thread each link points to.

Due to blog post constraint to 10000...

wyldckat

Retired Super Moderator

Posted in Links and tutorials for OpenFOAM and dependencies

Views 24391 Comments 2 wyldckat is offline

Open Foam for Mold Flow analysis

Posted March 20, 2010 at 11:12 by KyleL (Injection Molding applications for OpenFoam)

Hello all and welcome to my blog.

It appears to me after going through most of the tutorials that Open Foam is the ideal candidate for an open source mold flow analysis tool.
Open Foam is a very powerful, robust C++ library for computational programming.I see no reason why Open Foam can not be just as popular as the bigger names,i.e. MOLDFLOW & FLOW-3Din injection moulding, and even easier to use.The best benefit would be the support of the open source community and our willingness...

KyleL

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Finite Volume Method for calculation of compressible fluid

Posted January 29, 2010 at 12:31 by kirilhs
Updated September 23, 2022 at 13:21 by kirilhs

Hi everyone,

In the Department of "Mathematical Modeling and Numerical Simulations", Institute of Mechanics - BAS, is developed a new finite volume algorithm for calculation of compressible fluid (SIMPLE-TS (Time Step). The algorithm is published in Journal of Computational Physics.
SIMPLE-like algorithms have one main disadvantages. They use the approximation drho/dt = (rho - rho^(n-1))/ht in the pressure equation. Because if this disadvantages the pressure equation...