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-   -   why courant number goes so high? (http://www.cfd-online.com/Forums/openfoam-solving/112796-why-courant-number-goes-so-high.html)

immortality February 5, 2013 13:50

why courant number goes so high?
 
1 Attachment(s)
in sonicFoam courant number increases very high while its restricted to .1 in controlDict?
Code:

application    sonicFoam;

startFrom      latestTime;

startTime      0;

stopAt          endTime;

endTime        0.020708089;

deltaT          5.6e-9;

writeControl    adjustableRunTime;

writeInterval  .000001;

purgeWrite      0;

writeFormat    binary;

writePrecision  10;

writeCompression on;

timeFormat      general;

timePrecision  6;

runTimeModifiable true;

adjustTimeStep  yes;

maxCo          0.1;

maxDeltaT      .0001;

libs ( "libOpenFOAM.so" "libgroovyBC.so" ) ;



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