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Questions tagged [fsi]

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2 votes
2 answers
34 views

How do we implement the balance of stress on interface in ALE FSI method?

""we aim for a consistent variational-monolithic coupling scheme in which we need all equations defined in the same domain; therefore, $\mathrm{ALE}_{f x}$ was introduced. In variational ...
1 vote
0 answers
38 views

Mesh movement method causing force oscillations in benchmark 2D FSI problems

I'm relatively new to the FSI world, and I'm dealing with some benchmark FSI problems at first; such as the example of a flap in a channel. (googling fsi benchmark flap 2D leads me to the example ...
1 vote
1 answer
82 views

Is the weak form on this book about a level set FSI problem wrong?

I'm trying to repeat a level set FSI problem on the book <Level Set Methods for Fluid-Structure Interaction>, on the page 89, the provided freefem code define a weak form of the discretized ...
0 votes
1 answer
76 views

In level set fluid structure interaction method why can we rewrite the elastic force in this form while there is no shear force?

when we consider a Immersed Membrane Without Shear, we can define a regularized elastic energy as $$\mathcal{E}(\varphi)=\int_{\Omega} E(|\nabla \varphi|) \frac{1}{\varepsilon} \zeta\left(\frac{\...
4 votes
2 answers
135 views

Which algorithms(paper) should be reproduced by a student to enter the field of computational fluid-structure interaction?

We'd better not to reinvent the wheel. But without some programming, one can hardly understand computational fluid-structure interaction. And I would like to know which papers or algorithms should a ...
4 votes
2 answers
223 views

Obstacle too thin in fluid-structure interaction, so I consider it as membrane

I need to simulate a 3D fluid-structure problem where the obstacle is an elastic and very thin structure (then I want to consider this structure as a surface). I need to solve this problem using ...
0 votes
0 answers
47 views

Finite elements algorith for a fluid in a tube with an elastic obstacle (Fluid-Solid coupling)

I want to solve the model of a tube with an elastic obstacle, something like a simple model of an vessel with a valve. The fluid is given by an evolutionary incompressible Navier--Stokes equations, ...