ANSYS Fluent and Simulink co-simulation in real time.

Hello,

I want to test a temperature and air flow pattern in a room in ANSYS Fluent but the same time i want a co-simulation with Simulink so that i can modify parameters in Simulink and observe the variation in Fluent. How to do that....??

thanx

[Nguyen Xuan]

I also find the solution for this problem. Have you found a solution yet?

[vaibhav gaharwar]

no..can you plz share the solution? i am very greatful to you..thanx

Answer 1

[Kothuri]

Hi Vaibhav gaharwar,

I understand that you want to conduct a co-simulation between ANSYS Fluent and Simulink to dynamically adjust parameters in Simulink.

For Co-simulation between ANSYS Fluent and Simulink, you need to

• Build your model in ANSYS Fluent by defining the geometry, mesh, boundary conditions, and initial conditions for the temperature and airflow pattern in the room.
• Develop your control model in Simulink, which will allow you to modify parameters and observe their effects.
• Use an S-Function to communicate with Fluent.
• Export your Fluent model as a Functional Mock-up Unit (FMU). ANSYS provides a System Coupling tool that can facilitate co-simulation with other software.
• Import the FMU using Simulink’s FMU import capabilities to integrate the Fluent model. You can refer the below link for more info on FMU.

https://www.mathworks.com/help/simulink/co-simulation.html

• Develop a custom S-Function in Simulink to interface with Fluent.
• Establish the communication protocol between Fluent and Simulink. This involves setting up the data exchange parameters, such as time steps and synchronization points.
• Implement Communication through

Data Exchange: Set up a mechanism for exchanging data between Fluent and Simulink. This could be through:

Shared Files: Writing and reading data to/from files.

Sockets: Using network sockets for real-time communication.

Direct API Calls: If available, use APIs provided by ANSYS for direct communication.

• Execute the co-simulation, allowing Simulink to modify parameters in real-time and observe the resulting variations in Fluent.

You can refer the below file exchange for more info on interactive link between MATLAB and ANSYS

https://www.mathworks.com/matlabcentral/fileexchange/53032-interactive-link-between-matlab-and-ANSYS

Hope this helps!