Hello everybody,
I tried to model a rocket shape that had airbrakes to increase the drag coefficient as compared to the same body without them, however, I am getting a greater drag coefficient for the second one. I can’t find any mistake in how I set up the model, could I get some help in figuring this out?
Hello rebecca,
thanks for reaching out to us here in the forum.
Can you please share a link to your project here, so that we can have a look at it?
Also have you compared the force results directly?
You can also have a look at this article in order to check the setup of your coefficient result control item.
Thanks and best regards
Sebastian
I just added a link, thank you for your help.
I did review the drag coefficients page, but my confusion stems from the specific results once I have followed all the instructions there
HI Rebecca
I just had a look at your simulation, and for a steady state run please set the simulation end time to 1000.
For a steady state analysis with a delta t of 1 the End time is the number of iterations. And usually, CFD simulations need something between 500 and 1000 Iterations to reach a converged result.
You can set the End time under Simulation Control.
Please also set the write interval to 500, else a lot of results will be written, which increases the run time of your simulation.
After that, you can check the convergence of your simulation as described here:
Please let me know if you have any further questions.
Best regards
Sebastian
