In Autodyn, why is the material velocity in Euler domain different from the incoming material velocity defined in flow-in boundary condition?
June 6, 2022 at 9:58 amFAQParticipant
The concept of flow-in boundary condition in Autodyn may be slightly different from the inlet boundary condition in most CFD programs. Autodyn flow-in boundary condition is used to represent a very long jet moving in a constant velocity before impacting a specified solid or fluid. Instead of representing the entire length of the jet in Autodyn model, flow-in boundary condition is used so user doesn’t have to model the entire geometry of the long jet to reduce computing time. Thus, user needs to have the same material in the Euler domain and fill the material with same velocity as defined in the flow-in boundary condition. Then user will observe the continuous material flow with the constant velocity in the Euler domain. If the Euler material is initially at rest and the flow-in material has the non-zero velocity, the velocity of the Euler material predicted by Autodyn will be smaller than the incoming flow-in velocity, based upon the law of momentum conservation.
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.
- The warning message is: “The maximum contact stiffness is too big. This may affect the accuracy of the results.” Why does large contact stiffness affect results accuracy?
- Contact Definitions in ANSYS Workbench Mechanical
- How to resolve “Error: Invalid Geometry”?
- After Workbench crashes, how can I recover the project from a .mechdb file?
- Model has a large number of contacts – how to reduce them?
- How to locate an element of a particular ID number in Mechanical?
- How to display the color of each body based on the material in Mechanical?
- Please explain the warning message “coefficient ratio exceeds 10e8” ?
- How to Connect Excel to Workbench
- How can I plot bodies colored by material property in Workbench?