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STYLE: avoid floating point comparison with uint8_t in DSMCCloud

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This commit is contained in:
Mark Olesen
2019-01-23 22:52:35 +01:00
parent 5bdb6ddf9f
commit c5fd858c14
1 changed files with 19 additions and 22 deletions
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41
src/lagrangian/DSMC/clouds/Templates/DSMCCloud/DSMCCloud.C
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@ -997,35 +997,32 @@ Foam::scalar Foam::DSMCCloud<ParcelType>::equipartitionInternalEnergy
direction iDof
)
{
scalar Ei = 0.0;
if (iDof < SMALL)
if (iDof == 0)
{
return Ei;
return 0;
}
else if (iDof < 2.0 + SMALL && iDof > 2.0 - SMALL)
else if (iDof == 2)
{
// Special case for iDof = 2, i.e. diatomics;
Ei =
-log(rndGen_.sample01<scalar>())
*physicoChemical::k.value()*temperature;
return
(
-log(rndGen_.sample01<scalar>())
*physicoChemical::k.value()*temperature
);
}
else
const scalar a = 0.5*iDof - 1;
scalar energyRatio = 0;
scalar P = -1;
do
{
scalar a = 0.5*iDof - 1;
scalar energyRatio;
scalar P = -1;
energyRatio = 10*rndGen_.sample01<scalar>();
P = pow((energyRatio/a), a)*exp(a - energyRatio);
} while (P < rndGen_.sample01<scalar>());
do
{
energyRatio = 10*rndGen_.sample01<scalar>();
P = pow((energyRatio/a), a)*exp(a - energyRatio);
} while (P < rndGen_.sample01<scalar>());
Ei = energyRatio*physicoChemical::k.value()*temperature;
}
return Ei;
return energyRatio*physicoChemical::k.value()*temperature;
}