[thegauravonline]

I ran a simulation to end Time = 10. Now i wish to resume it.
I changed in controlDict file startTime = 10.

but i am seeing

--> FOAM FATAL IO ERROR: 
keyword grad(DU_0) is undefined in dictionary fvSchemes

How do i resume the simulation.

[RodriguezFatz]

This actually sounds like you changed something in your fvSchemes file.
Did you change the line under "gradSchemes" that was something like "default Gauss linear;"?

[thegauravonline]

Thank You for your concern!!
I have made no changes.
Here is the fvSchemes code set in the tutorial itself.

FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

d2dt2Schemes
{
    default     none;
}

ddtSchemes
{
    default     none;
//    ddt(DU)     Euler;
    ddt(DU)     backward;
}

gradSchemes
{
    default         none;
    grad(DU)        Gauss linear;
    grad(Us)        Gauss linear;
    snGradCorr(DU)  Gauss linear;
}

divSchemes
{
    default         none;
    div(sigma)      Gauss linear;
}

laplacianSchemes
{
    default             none;
    laplacian(DDU,DU) Gauss linear corrected;
}

snGradSchemes
{
    default none;
//    snGrad(U)       corrected;
}

interpolationSchemes
{
    default                  none;
    interpolate(sigma) linear;
    interpolate(mu) linear;
}

// ************************************************************************* //

Am working on HronTurek tutorial in icoFsiElasticNonLinULFoam in Foam-Xtend 3.2.

Thanks Again

[RodriguezFatz]

Hi,
Since you set all of them to "Gauss linear" you can just set the default to Gauss linear and comment out the others.
I don't know, why it didn't complain about the missing "grad(DU_0)" scheme before, but it is obviously missing.

[Tushar@cfd]

Originally Posted by thegauravonline

I ran a simulation to end Time = 10. Now i wish to resume it.
I changed in controlDict file startTime = 10.

but i am seeing

--> FOAM FATAL IO ERROR: 
keyword grad(DU_0) is undefined in dictionary fvSchemes

How do i resume the simulation.

Instead of startTime use latestTime, I hope this will do the job.

Best Luck !