Tagged: 19.2, fluent, Fluent-CFDPost IO, fluid-dynamics, General, NA
January 25, 2023 at 7:16 amFAQParticipant
There are a few points to consider: 1. At present, in Release 19.2, the shell zones get created each time, when one reads a case file. Some larger cases, that include 100’s or 1000’s of shell zones might demonstrate a considerable slow-down. 2. Typically, the shell-creation time reduces with the number of cores, and the case loading time is also reduced with the number of cores used. 3. As the virtual shell cells are not saved in the case file, the temperature data for these shells are saved as additional variables on the walls, and represent the shell-cell and facet values. Upon reading a case file, the data gets mapped onto the newly recreated virtual cells in the shell zones and this mapping process adds to the cost and slows down the process further. On a positive side there are a few points to note too. 1. There have been a lot of enhancements in this area between R16.0 and the current release R19.2. Upgrading to the current release is, therefore, very favourable. 2. There are some additional improvements that can be exercised already in R19.2 by means of executing special scheme scripts. This allows a somewhat quicker mapping, which can moderately improve the case and data file read times. 3. Most importantly, in the next release in the beginning of 2019 there will be a drastically improved functionality where the shell elements will be saved in the case file directly. This will make the read/write times much faster and will avoid all the time and effort that is now required for mapping. 4. Reading and writing the files in the .h5 format is likely to improve the overall reading and writing time but it does not affect the shell zone recreation and mapping directly. It is also worth re-iterating that the smaller the cell count per compute node is – the faster the current shell-related read-process is. Currently the only standard possible way to reduce the read/write time would be to open the case file on a maximum number of cores possible.
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.