August 15, 2022 at 10:20 amMIsenSubscriber
I would like to ask if someone knows whether it is possible to use Ansys to simulate particle behaviour in free molecular flow (Knudsen number >10), or not?
August 16, 2022 at 5:22 amKishan KonannavarAnsys Employee
The underlying Navier-stokes equation in Ansys Fluent uses continuum approach. At such high Kn numbers the numerical accuracy of the solution may not be acceptable.
August 16, 2022 at 2:33 pmRobAnsys Employee
What is the purpose of the models? Particles in a vacuum can be modelled, but you need to mess with the carrier fluid to reduce (remove) drag. Do NOT set density and viscosity as zero though, it'll do interesting things to the solver.
- You must be logged in to reply to this topic.
Simulation World 2022
Earth Rescue – An Ansys Online Series
- Suppress Fluent to open with GUI while performing in journal file
- Heat transfer coefficient
- What are the differences between CFX and Fluent?
- Floating point exception in Fluent
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- The solver failed with a non-zero exit code of : 2
- Exporting Data Results
- error in cfd post