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how to make rhoCentralFoam to write continuity residuals?

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Old   April 30, 2013, 15:30
Default how to make rhoCentralFoam to write continuity residuals?
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although rhoPimpleFoam writes residuals of continuity equation but rhoCentralFoam doesn't.
how can change rhoCentralFoam to write continuity residuals?
writing part of them is like below:
rhoCentralFoam:
Code:
turbulence->correct();

        runTime.write();

        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
            << nl << endl;
    }

    Info<< "End\n" << endl;

    return 0;
}
rhoPimpleFoam:
Code:
if (pimple.turbCorr())
            {
                turbulence->correct();
            }
        }

        runTime.write();

        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
            << nl << endl;
    }

    Info<< "End\n" << endl;

    return 0;
}
looks like the same.
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Old   May 2, 2013, 13:49
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is this work very difficult to do?
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Old   May 3, 2013, 05:31
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what do you mean with residuals?

1. Like in rhoSimpleFoam

2. like in anyother Solver

Solution for 1:

you only have to include 2 files from the rhoSimpleFoam solver, put it in rhosimpleFoam and change the option-file

Solution for 2:

the inviscid part of the rhoCentralfoam is writen explicit so they are no residuals because the are no off diagonal elements.
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Old   May 3, 2013, 06:30
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Hi
thanks
what are you intending by put two files in rhoSimpleFoam?
my case is viscous,but rhoCentralFoam doen't display any continuity residuals in terminal.
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Old   May 3, 2013, 06:59
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do you mean that with residuals?

rhoCentralFoam 2.)

diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal: Solving for rhoUx, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal: Solving for rhoUy, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal: Solving for rhoUz, Initial residual = 0, Final residual = 0, No Iterations 0
smoothSolver: Solving for Ux, Initial residual = 1.95048866651e-10, Final residual = 1.95048866651e-10, No Iterations 0
smoothSolver: Solving for Uy, Initial residual = 9.73681566024e-10, Final residual = 9.73681566024e-10, No Iterations 0
smoothSolver: Solving for Uz, Initial residual = 1.47465149533e-08, Final residual = 5.51042146969e-17, No Iterations 2
diagonal: Solving for rhoE, Initial residual = 0, Final residual = 0, No Iterations 0
smoothSolver: Solving for e, Initial residual = 9.40976717204e-10, Final residual = 6.94520062811e-16, No Iterations 2
ExecutionTime = 613.71 s ClockTime = 625 s


rhoSimpleFoam 1.):

time step continuity errors : sum local = 26.0848, global = -19.5881, cumulative = -19.5881

if you want to have like it is in rhoSimpleFoam you have to modify the solver just take a look a both solvers.
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Old   May 3, 2013, 07:49
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but what parts of code i have to change?I have no any idea!
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