[yanis]

Hello everyone, i have a problem
my simulation take a lot of time, i lunch it 6 day ago and it also calculate.
can you help me and give me the parameters that i can change to reduce this time.

[MFGT]

Hi yanis,

to speed up a simulation you can increase computational power, increase grid sizes or increase CFL criteria.

What are you simulating? How many cells do you have? With how many cores do you run your case?

Also here, more input is needed to help you

[yanis]

Hi, simulating thé exemple in the tutorial " engine case dual fuel " with thé same parameters I have an i3 processor with 4 cores I need help please am lost

[Yaju]

Hi yanis,

The dual fuel sector case generally takes more time because of the high number of species it has to solve for. If the aim of your work is to practice running Converge, and to see how the outputs are looking, you can try the engine sector diesel - SAGE example. It has relatively less number of species than dual fuel sector.

Considering that you are only using 4 processors, you can coarsen your base mesh size from 0.0014 m to 0.002 m. Anything below that might affect your results. Alternatively, you can coarsen your base mesh to 0.0028 m, and increase the nozzle embedding scale and AMR embed scale for velocity and temperature by 1.

If you need further support, you can email at support@convergecfd.com