Why is the Courant number specified for an implicit time marching scheme when the time step size is already an input?
January 25, 2023 at 7:16 amFAQParticipant
The implicit time marching method is a “dual” time formulation, which implies that the marching is done in physical time as well as in “pseudo” time. The “pseudo” time marching, also known as “inner iterations”, is performed to advance the solution from one physical time to the next physical time. The next physical time is given by the current physical time plus the user specified time step size. The “pseudo” time step size used for these “inner iterations” are calculated using the Courant number based on the stability theory. The Courant number is specified in the Solution Controls panel. The number of “inner iterations” performed depend on the “max. iterations per time step” parameter specified in the Solution> run calculation panel and the convergence criteria for residuals set in the monitors panel.
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.
- How can I create a Cell Register from a Cell Zone?
- Left-handed faces troubleshooting
- How to overcome the model information incompatible with incoming mesh error?
- How to create and execute a FLUENT journal file?
- What are the requirements for an axisymmetric analysis?
- How can I Export and import boxes / Systems from one Workbench Project to another?
- Delete or Deactivate Zone in Fluent
- Running Python Script from Workbench
- ANSYS Fluent: Introduction to the GEKO Turbulence Model Part I
- ANSYS System Coupling: Two Way Fluid Structure Interaction – Part 1