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Fluent Monitored Results Decreasing Indefinitely

- November 3, 2024 at 12:42 pm
  
  DRD08
  Subscriber
  
  Hi, I am simulating airflow around a wing within the ground effect. The results reached the 0.001 residual target at around 550 Iterations, I continued the simulation and the monitored lift and drag coefficient continued to drop around 0.00001 every 5 iterations even at 1000 iterations. When will my results stabilize or is there something I'm doing wrong? I am using the K-Omega SST Turbulence model, the mesh has a cell count of around 2 million. The solution and methods are attached in the image. Any advice will be appreciated. Thanks!
- November 4, 2024 at 8:55 am
  
  SRP
  Ansys Employee
  
  Hi,
  The fact that your residuals have reached a convergence criterion of 0.001 is promising, but the observed fluctuations in the lift and drag coefficients indicate that the solution may still be stabilizing.
  With 2 million cells, your mesh seems reasonable, but ensure that it has sufficient refinement in the boundary layer
- November 24, 2024 at 1:49 pm
  
  DRD08
  Subscriber
  
  Hi thanks, It just turned out I had to let it solve for more iterations.

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