# what does NonOrthogonalCorrectors mean?

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 February 10, 2014, 05:01 what does NonOrthogonalCorrectors mean? #1 New Member   avinashjagdale Join Date: Feb 2014 Location: pune,India Posts: 26 Rep Power: 4 hello, How does openfoam treat non orthogonal meshes using "nonOrthogonalcorrectors" ? What does it actually do? Thank You.

 February 10, 2014, 06:39 #2 Senior Member   Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,436 Rep Power: 25 Hi, You'd like to see a piece of code (this example is from pimpleFoam's pEqn.H) Code: ```// Non-orthogonal pressure corrector loop while (pimple.correctNonOrthogonal()) { // Pressure corrector fvScalarMatrix pEqn ( fvm::laplacian(rAU, p) == fvc::div(phiHbyA) ); pEqn.setReference(pRefCell, pRefValue); pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter()))); if (pimple.finalNonOrthogonalIter()) { phi = phiHbyA - pEqn.flux(); } }``` or something else?

 February 10, 2014, 07:00 #3 New Member   avinashjagdale Join Date: Feb 2014 Location: pune,India Posts: 26 Rep Power: 4 hi alexey , I am new to OpenFOAM . I came across this while going through UserGuide. Hence I won't understand much from the Code. I have read about the calculation of diffusion and convection terms for non-ortho grids. Can u please give an explanation in non-code format? Thank you.

 February 10, 2014, 11:03 #4 Senior Member   Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,436 Rep Power: 25 I can only suggest you reading H. Jasak's thesis - http://powerlab.fsb.hr/ped/kturbo/Op...jeJasakPhD.pdf avinashjagdale likes this.

 February 11, 2014, 00:17 #5 New Member   avinashjagdale Join Date: Feb 2014 Location: pune,India Posts: 26 Rep Power: 4 thank you.

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