When to use double precision?
 

When is it beneficial to use the double precision solver for fluent? I can't seem to find a real answer to this anywhere.

Thanks.

Re: When to use double precision?
 

The use of double precision in Fluent is basically the same than for any other numerical code. It is needed everytime you need to capture a small variation of a quantity that can vary by large amounts. For instance if you have a very stretched mesh, with some cells dimensions beeing way higher than others, double precision will be helpful.

Re: When to use double precision?
 

If I have models which are giving me many incompletes on the DPM, would double precision help eliminate them?

Re: When to use double precision?
 

Most likely not, incomplete in DPM means that you are not having enough integration steps on your particles, or that the step are too small.