[kaaaixx]

Hello to all,

is there some way to get the mean pressure/ mean temperature of the engineFOAM cases depending on the crank angle? I am using swak4foam with the following function:


pToVolume
{
type swakExpression;
valueType internalField;
variables ( "pTotal{internalField} = sum(p*vol())/sum(vol());");
accumulations (
average
//min
//max
);
expression "pTotal";
verbose true;

}

Is there a output mode which i can use so i get the datas depending on the crank angle and not depending on the time?

Or is there some other easier way to output the mean pressure?

Thanks in advance

[kaaaixx]

Well, shame on my. There is a file "logSummary.-180.dat' generated by the solver while processing, which does exacly what i need... so no need for swak4foam in engineFoam for getting mean pressures or mean temperatures.. sorry for that.

What irritates me (and what i really tried to solve using the forum search function) is the really slow pressure. The highest pressure in the standard kivaTest case is about 17 bar.. compared to real engines this is really low..shouldn't that be about 40-70 bar?


I have a compression ratio of 8.8 with the standard kiva17 geometry.

Is there a reason for that pressure? I am trying smaller deltaT steps, but actually with no success.

Can you give me some tips what to try?

[ozehis55]

Hello Wiessel, can you please let me know whether you got a response concerning why the pressure is low and temperature keep increasing in logSummary.-180.dat file in kivaTest tutorial. If you did fix this issue, kindly let know what you did to fix it.