How to skip over the flow and adjoint iterations for the first design iteration when using the Ansys Fluent Gradient-Based Optimizer?
April 13, 2023 at 7:33 amSolutionParticipant
If you have an existing solution from the flow and/or the adjoint calculation, you might want to skip over the initial calculations when starting the automated optimization process with the gradient-based optimizer for shape or turbulence model optimization. In the optimizer, you can simply set the number of iterations to zero for both calculations. Then access the Execute Commands… either from the Gradient-Based Optimizer window, or from the ribbon Design > Gradient-based > Calculate… > Calculation Activities > Execute Commands… Add one or two new commands with the lines: /adjoint/optimizer/settings/adjoint-iterations 20 /adjoint/optimizer/settings/flow-iterations 200 Adjust the numbers in these lines according to your calculation requirements. You must execute this repeatedly. “Execute Once” is not supported for design iterations. When you start the optimization now, Fluent reports a warning that the number of iterations is insufficient. You can just acknowledge that message and continue. The optimization process starts with the design calculation and continues with saving the optimal design. Before starting the flow calculation, it executes the text commands that set the maximum number of iterations to the intended values. Remember that if you continue an optimization, you can skip the flow but not the adjoint calculation.
Introducing Ansys Electronics Desktop on Ansys Cloud
The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...
How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)
This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...
Introducing the GEKO Turbulence Model in Ansys Fluent
The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1 provides background information on the model and a...
Postprocessing on Ansys EnSight
This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.
- ANSYS Fluent: Introduction to the GEKO Turbulence Model Part I
- How can I create a Cell Register from a Cell Zone?
- ANSYS System Coupling: Two Way Fluid Structure Interaction – Part 1
- Delete or Deactivate Zone in Fluent
- Left-handed faces troubleshooting
- Running Python Script from Workbench
- ANSYS Polyflow: Adaptive Meshing Based on Contact
- Check CPU Time in ANSYS FLUENT
- How to overcome the model information incompatible with incoming mesh error?
- Apply Custom Material Properties in Fluent
© 2023 Copyright ANSYS, Inc. All rights reserved.