[Tobi]

Dear Community,

I do have a question regarding the Bird Correction we can activate in the heat-transfer model in OpenFOAM. The question is related to the usage of the model.

• When do we have to activate the Bird correction?

After some short research, it seems that it is related to the Stefan Flow? However, I am not sure about that and maybe I am mixing things up here (probably). So if you are aware of that correction, I would be happy to have some information as return

[Lehaibmo]

I also want to know

[jairoandres]

See in: https://pure.tue.nl/ws/files/9110053...02016_main.pdf

"Bird correction is applied to Nu to account the reduction in heat transfer due to evaporation". I suppose this is related to the change in Nu due to the vapour film near the droplet, which if my brain does not trick me, is related to the Stephan flow phenomena.

In the code, it clearly seen that the BirdCorrection modifies the htc (heat transfer coefficient):

if (BirdCorrection_ && (mag(htc) > ROOTVSMALL) && (mag(NCpW) > ROOTVSMALL))
{
const scalar phit = min(NCpW/htc, 50);
if (phit > 0.001)
{
htc *= phit/(exp(phit) - 1.0); // Always reduces the value of htc.
}
}

return htc;
}