Tagged: fluent, fluid-dynamics, General, General - FLUENT, Other
-
-
March 17, 2023 at 8:58 amFAQParticipant
A common question is whether it is necessary to change the value for the hydraulic diameter when splitting a flow boundary condition by a symmetry plane. For example, for a square with the side length of 2a, the hydraulic diameter is 2a, but if it is split in half by a symmetry plane, the hydraulic diameter of one half would be 4a/3. So if the square B.C. is divided in the middle by a symmetry plane, what is the hydraulic diameter to be entered in the boundary conditions panel when using Intensity and Turbulence Diameter to specify the turbulence at an inlet? The hydraulic diameter should be entered as if the symmetry plane is not there, which in the example from the problem description would be 2a. The reason for this is that the hydraulic diameter is used to determine a length scale for the turbulence. The length scale is based on the mixing length for fully developed turbulent pipe flow. The actual physical size of the duct remains unchanged by the presence of the symmetry boundary; therefore the length scale of the turbulence, which is estimated based on the actual physical size of the duct, should also remain unchanged by the presence of the symmetry boundary.
-
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 1Â 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 to overcome the model information incompatible with incoming mesh error?
- What are the requirements for an axisymmetric analysis?
- How to create and execute a FLUENT journal file?
- How can I Export and import boxes / Systems from one Workbench Project to another?
- What is a .wbpz file and how can I use it?
- Skewness in ANSYS Meshing
- How can I select interior faces and other entities that are inside the model?
- Error: Update failed for the Mesh component in Fluid Flow (Fluent). Error updating cell Mesh in system Fluid Flow (Fluent). View the messages in the Meshing editor for more details.
- Left-handed faces troubleshooting
- What are pressure-based solver vs. density-based solver in FLUENT?
© 2024 Copyright ANSYS, Inc. All rights reserved.