Hello,

When I do Gradient Adaption, how much for the refine threshold value for adaption? In fact, the default value for Fluent is 1e10, I think it's too much. Anyone have a better idea?

Thanks.

Jie

There is an article in the FluentNews volume 10 about adaption. "To determine the refinement threshold, many engineers like to use what is known as the 10% rule, whiche states that a cell should be refined whenever the computes gradient is above 10% of the maximum value"

Yours Armin

Hi, like always it depends on the case. To resolve the shear layer of a free submerged jet I had to use a refine threshold of 1E-5 (while the max was 0.007) to get results for the entrained massflow wich were comparable to measurements.

Volker.