Fluid Structure Interaction and Restarting a coupled Analysis in Fluent and Mechanical Solver

Restarting a coupled Analysis in Fluent and Mechanical Solver for a Fluid Structure Interaction problem

We consider cavity filled with fluid and a thin plate that oscillates due to a temporally applied pressure. Here, we investigate the method of restarting a coupled system calculation. This system describes a fluid structure interaction using data generated by Fluent and Mechanical. To review, the structural system uses the mechanical solver to calculate the behavior of a metal thin plate.  The fluid system uses the fluent solver to calculate the behavior of the fluid in the cavity. System coupling controls the exchange of data between each system. This allows the interactions between the fluid and the plate to be described.

Now we can use the existing data to start the calculation with smaller time steps from an intermediate time point. Then, in the mechanical setup, we change the restarting setting into manual. This setting allows us to see the data and choose the time point and the mechanical system is ready for the restart. To prepare the fluid system to restart, we open the solution data in fluent and we read the same time point data. In the system coupling set up we select analysis setting, in the details view, set the coupling initializations to the time step you decided before. Here you choose the time step and run the calculations.

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