Can Ember output the profNNNNN.h5 file with the desired dt and dx?

[Mansterbor]

I want to use Ember to calculate the transient twin flame, but the time interval and flame coordinate interval calculated by example_twin.py in the example are too large, and there are missing boundaries (possibly due to adaptive meshing). I hope to refine the computational grid, but the input parameters of Ember are giving me a headache. I have changed many input parameters, but still cannot achieve the expected effect, so I raise this question.

[speth]

The times at which profNNNNN files are output is controlled by the Times(profileStepInterval=...) option. This must be at least as large as the Times(globalTimestep=...), where the latter defaults to 20 µs. There's no problem with setting this smaller if you want higher temporal resolution.

While you can run on a fixed grid, it's not very computationally efficient. I would say that you're better off interpolating after the fact. You can get a moderately more uniform grid by setting Grid(gridMax=...) to a smaller value.

Hope this helps. If not, please post your input file.

[Mansterbor]

Thank you very much for your reply. The problem has been resolved. Another question is, what are the units of Ember's output parameters?What are the units of V mass velocity and Y mass fraction？It would be great if ember could annotate the units when outputting parameters.