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Forum: OpenFOAM Running, Solving & CFD March 13, 2020, 02:33
Replies: 23
Views: 3,576
Posted By Kummi
My code is compiled good, velocity contour...

My code is compiled good, velocity contour changes appropriately. But there is problem with magnitude of velocity - which varies in very random manner. In general, my case is steady in flow. But, I...
Forum: OpenFOAM Running, Solving & CFD March 8, 2020, 13:29
Replies: 23
Views: 3,576
Posted By Kummi
Thank you for your comments. One of my friend...

Thank you for your comments.
One of my friend helped to find a way somehow, however not that clear (by cross-checking with icoFOAM incompressible solver). Some manipulations are made here without...
Forum: OpenFOAM Running, Solving & CFD March 6, 2020, 12:16
Replies: 23
Views: 3,576
Posted By Kummi
Question Fornulation

Thank you for your response ^_^
p2 can be solved only after calculating velocity (U). and then how to calculate del X U explicitly as such ? I couldn't get it here..


From velocity matrix...
Forum: OpenFOAM Running, Solving & CFD March 5, 2020, 14:39
Replies: 23
Views: 3,576
Posted By Kummi
Thank you for your reply. Got your points. ...

Thank you for your reply.

Got your points.

As I explained above, If I define, fvm::ddt(U) - unit will be m/s2, where other terms are with unit of 1/s. Units mismatch will happen.

In my...
Forum: OpenFOAM Running, Solving & CFD March 3, 2020, 01:06
Replies: 23
Views: 3,576
Posted By Kummi
Question Defined an ADDITIONAL implicit term - helps in compilation

As explained above, in order to define the equation in matrix form, the implicit term (fvm) is highly necessary. In my equation, I have only curl operator, which is only explicitly (fvc) defined in...
Forum: OpenFOAM Running, Solving & CFD January 26, 2020, 04:38
Replies: 23
Views: 3,576
Posted By Kummi
Question Unable to define the operators - Implicitly

As like OpenFOAM, "curl" operator has been expressed only explicitly in foam-extend too.

However, implicit "grad" operator is handled in foam-extend. But, I'm not sure how far it is accessible....
Forum: OpenFOAM Running, Solving & CFD January 23, 2020, 07:31
Replies: 23
Views: 3,576
Posted By Kummi
https://www.cfd-online.com/Forums/openfoam-solving...

https://www.cfd-online.com/Forums/openfoam-solving/58215-block-matrices-vs-segregated-solvers.html
Block matrix implementation for implicit curl operators. Its in Foam-Extend versions based on...
Forum: OpenFOAM Running, Solving & CFD January 23, 2020, 03:42
Replies: 23
Views: 3,576
Posted By Kummi
Question fvVectorMatrix structure !!

Dear Adhiraj,
I have came across a thread - implemented curl function in fvMatrix.
https://www.cfd-online.com/Forums/openfoam-solving/59823-does-anyone-work-curl-openfoam.html#post201585
With...
Forum: OpenFOAM Running, Solving & CFD January 21, 2020, 09:02
Replies: 23
Views: 3,576
Posted By Kummi
Dear Adhiraj, Hereby in this post,...

Dear Adhiraj,
Hereby in this post, gradient variables are defined explicitly inside fvMatrix.
...
Forum: OpenFOAM Running, Solving & CFD January 21, 2020, 01:41
Replies: 23
Views: 3,576
Posted By Kummi
Question Convert the explicitly defined variables into implicit formulations

Dear Adhiraj,
I couldn't able to physically create the flowchart in my mind to resolve this particular case.
To start with the vector form of equation:

\bigtriangledown \times \vee - \vee...
Forum: OpenFOAM Running, Solving & CFD January 18, 2020, 19:47
Replies: 23
Views: 3,576
Posted By Kummi
Dear Adhiraj, Thank you. I have fully...

Dear Adhiraj,
Thank you. I have fully understood your above comments. Using fvm operator with divergence in hand, calculations are made firstly, and then followed by the extraction of...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 21:14
Replies: 23
Views: 3,576
Posted By Kummi
Dear Adhiraj, Thank you. As you stated, to...

Dear Adhiraj,
Thank you. As you stated, to create the matrices, fvm operators are necessary. But in my case, the velocity equation contains only gradient terms.
I referred the following thread...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 18:36
Replies: 23
Views: 3,576
Posted By Kummi
As stated in above error, when I looked into the...

As stated in above error, when I looked into the fvMatrix.C file (see below), the constructors are based on fvm type

But my above velocity equations are solved based on fvc. fvc convert a field...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 16:39
Replies: 23
Views: 3,576
Posted By Kummi
Dear Adhiraj, Thank you for your clear-cut...

Dear Adhiraj,
Thank you for your clear-cut explanation.

My biggest mistake was that, I didn't assign any name to solve velocity in matrix form, as how I assigned for pressure (p):
As you...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 13:58
Replies: 23
Views: 3,576
Posted By Kummi
Sorry Adhiraj. I'm in a rush to complete my work...

Sorry Adhiraj. I'm in a rush to complete my work - deadlines in short. I have searched threads in CFD forums, but couldn't able to find a way. Even in my previous thread, I replied at last - but...
Forum: OpenFOAM Running, Solving & CFD January 17, 2020, 12:13
Replies: 23
Views: 3,576
Posted By Kummi
Question [HOW TO] solve the velocity components (Ux and Uy) from 2 equations

Hello Foamers,
Based on my previous thread, I'm continuing this new thread !!...
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