Learning Forum

[simonhenn]

Hello,

I am simulating an air flow using the k omega SST model, a mass flow inlet and two pressure outlets. The problem is that no matter what I change about the mesh there is always a point where all the residuals suddenly go up at the same time:

[Karthik Remella]

Hello,nThis could be triggered by a lot of things - mesh quality, improper boundary conditions, or just something in physics. nYou will need to provide us with additional information about what you are modeling so we can help you better understand this. nThank you.nKarthikn

[simonhenn]

Hello, nI have already described the problem in several posts in this forum. I just wanted to ask wether there is one specific thing that could trigger this which would lead to a quick fix but if that isn't so then it's hard to find the problem .. nThanks nevertheless. n

[Karthik Remella]

Hi,nResiduals generally are indicators of convergence. They can spike because of several reasons as I mentioned in the previous post. You will need to look into each of these separately to understand this behavior. I hope this addresses your question.nThank you.nKarthikn