Learning Forum

[learn13]

A 1-way FSI imports the pressure from the fluid to the solid domain.

I have been having difficulty exporting the wall shear stress and others at specific faces from the fluid domain and applying them to the solid structure (static structural). 

Is an system coupling needed in conjunction with an external data module?

 

Best,

Lrn13

[Keyur Kanade]

Not an expert in fsi. So giving some references to go through. 

https://www.youtube.com/watch?v=y4amkTuNQUc

https://www.youtube.com/watch?v=WGjLvSYorNs

[learn13]

Thank you for your reply. 

You'll notice in both videos they import the pressure from the fluid solution, no other loads (i.e. WSS) are considered in the analysis. The tutorials you'll find detailing 1-way FSI typically follow this trend.

[DrAmine]

Just connect Fluent to Structural or use one way system coupling and the force acting on the structure is transmitted.

[learn13]

Amine (@abenhadj),

Within 2-way fsi system coupling the transient nature requires attention to the time steps. Although a 1-way approach would not have these considerations, are there particular steps that are not intuitive that might be overlooked?Or is it simply a matter of creating the data transfers and solving?

I ask because I am currently not at my desktop to try this.

Best,

Lrn13

[Keyur Kanade]

From help: 

When the External Data system is connected to the Mechanical system via System Coupling, Mechanical is given access to static data from .axdt files. When a co-simulation coupling participant, such as the ANSYS Fluent system, is connected to the Mechanical system via System Coupling, Mechanical is given access to data directly from the other participant. To start the setup of the coupled analysis, link the Setup cell from the Mechanical system to the Setup cell in the System Coupling system. See System Coupling for more information.

In a one-way coupled analyses, you can transfer steady-state or transient thermal data (temperature, heat flow, or heat transfer coefficient and near wall temperature), or force (from CFD pressures and viscous forces) to the Mechanical system. To transfer data from a co-simulation participant directly through System Coupling, connect a co-simulation compatible coupling participant, (such as the Fluent, Steady-State Thermal, or Transient Thermal system), to the System Coupling system that is connected to your Static or Transient Structural system. In the System Coupling system, define the desired data transfers from the other coupling participant to your Mechanical system.

[Sidharath]

is it possible to do one way way coupling without workbench??

 

[Sidharath]

From help: 

When the External Data system is connected to the Mechanical system via System Coupling, Mechanical is given access to static data from .axdt files. When a co-simulation coupling participant, such as the ANSYS Fluent system, is connected to the Mechanical system via System Coupling, Mechanical is given access to data directly from the other participant. To start the setup of the coupled analysis, link the Setup cell from the Mechanical system to the Setup cell in the System Coupling system. See System Coupling for more information.

In a one-way coupled analyses, you can transfer steady-state or transient thermal data (temperature, heat flow, or heat transfer coefficient and near wall temperature), or force (from CFD pressures and viscous forces) to the Mechanical system. To transfer data from a co-simulation participant directly through System Coupling, connect a co-simulation compatible coupling participant, (such as the Fluent, Steady-State Thermal, or Transient Thermal system), to the System Coupling system that is connected to your Static or Transient Structural system. In the System Coupling system, define the desired data transfers from the other coupling participant to your Mechanical system.

 

is it possible to do one way way coupling without workbench??