What is the meaning of the coordinates delivered by the ‘center of pressure’ postprocessing functionality within FLUENT?
January 25, 2023 at 7:16 amFAQParticipant
Let’s look at a flat plate exposed to constant pressure. For this plate the centre of pressure will have the same position as the center of gravity. The pressure force vector will be oriented in surface normal direction and act on the center of gravity. If the plate is supported at the center of gravity, it will stay in equilibrium with zero turning moment. In FLUENT after choosing the wall zones to evaluate the center of pressure from, the user has to provide an arbitrary x or y or z coordinate as an additional input. In exchange FLUENT does calculate the remaining 2 coordinates for the center of pressure. So instead of a unique centre of pressure, there are multiple solutions. What is the meaning of these ‘off (plate) surface’ points calculated in FLUENT by choosing one coordinate value? In the case of the flat plate example, all possible points do lie on the pressure force vector passing through the center of gravity. So in 3D the center of pressure for an arbitrary surface/structure is located on unique straight line defined by the pressure force vector passing through the ‘original’ center of pressure. (With that approach one also gets into trouble, if the pressure force vector does not intersect with the x/y/z-plane prescribed as a user input.) All this is quite easy to prove for e.g. one face of a cube.
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
- Delete or Deactivate Zone in Fluent
- What is meant by Warning: Flow boundary zone 18 is adjacent to a solid zone?
- Aero-Mechanical Simulation of Turbomachinery Blading
- ANSYS Polyflow: Adaptive Meshing Based on Contact
- Apply Custom Material Properties in Fluent
- ANSYS System Coupling: Two Way Fluid Structure Interaction – Part 1
- Predict Gearbox Lubrication, Oil Temperature and Churning Losses using CFD Simulation
- Check CPU Time in ANSYS FLUENT
- How to Predict Performance of Bioreactors and Mixing Tanks