One fine morning, in abundant spare time, yours truly decided to adapt the CFD and LE code that has been developed over the years in to sort of a code capable of simulating one-way FSI. In this post details about Fluid Structure Interaction (FSI) code are made available.
The code is very simple and basic form is less than 150 lines. A total of 50 lines for the CFD portion and around about 75 lines for the LE (Linear Elasticity) portion. The both CFD and LE codes have be thoroughly validated undependably. For CFD validation, please refer to here and here. Meanwhile the validation for LE portion is available here.
As of now, the work process is CFD→LE. Which means the flow-field has to be calculated first. More details about the CFD portion are available here, here, and here. The pressure and shear stress on the walls of interest are extracted. This pressure and shear stress is then applied as stress loads on the a boundaries of the object in the LE code.
The flow-field is simulated around a thin slander beam which is fixed with the floor. Within Fig. 1, From left to right u and v components of velocity are shown. Meanwhile, pressure and streamlines are shown on the bottom row. Within Fig. 2, the deflected thin beam is shown. The deflection is consistent with the intuition i.e. towards the flow and slightly below.
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| Fig. 1, The CFD results |
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| Fig. 2, The results of LE simulation! |
Thank you for reading. If you want to hire me as your shining new post-doc, do reach out!
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