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Convergence Failure Star-CCM+

Amiz

Student
Mar 7, 2025
4
Hi all,

I am looking to model a rocket at Mach 2 and have been running into some issues with the model after running the simulation. I have attached some images, the first being a mach scalar scene and the second being my mesh, and the summary file of the sim model, it would be great to get any insight into what I am doing wrong.
For reference I have a model of the Falcon 9 Rocket that I have scaled down in Star CCM to the characteristic length of 25.75mm, the same as a sphere I had modeled and was able to sun simulations up to Mach 7 with. Since the flow characteristics will now remain the same, i.e the Reynolds Number. This should mean that simply putting in the rocket in place for the sphere should be fine, or is my theory incorrect? Thank you in advance.
 

Attachments

  • Screenshot from 2025-03-13 14-54-36.png
    Screenshot from 2025-03-13 14-54-36.png
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  • Screenshot from 2025-03-13 15-48-46.png
    Screenshot from 2025-03-13 15-48-46.png
    985.9 KB · Views: 3
  • CFD-F9 - Copy (1).pdf
    177.7 KB · Views: 1

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