DeepAI AI Chat
Log In Sign Up

On the number of subproblem iterations per coupling step in partitioned fluid-structure interaction simulations

by   Thomas Spenke, et al.

In literature, the cost of a partitioned fluid-structure interaction scheme is typically assessed by the number of coupling iterations required per time step, while ignoring the internal iterations within the nonlinear subproblems. In this work, we demonstrate that these internal iterations have a significant influence on the computational cost of the coupled simulation. Particular attention is paid to how limiting the number of iterations within each solver call can shorten the overall run time, as it avoids polishing the subproblem solution using unconverged coupling data. Based on systematic parameter studies, we investigate the optimal number of subproblem iterations per coupling step. Lastly, this work proposes a new convergence criterion for coupled systems that is based on the residuals of the subproblems and therefore does not require any additional convergence tolerance for the coupling loop.


page 10

page 11

page 16

page 17

page 18

page 20

page 22

page 24


The Performance Impact of Newton Iterations per Solver Call in Partitioned Fluid-Structure Interaction

The cost of a partitioned fluid-structure interaction scheme is typicall...

Quasi-Newton Waveform Iteration for Partitioned Fluid-Structure Interaction

We present novel coupling schemes for partitioned multi-physics simulati...

Adaptive Position-Based Fluids: Improving Performance of Fluid Simulations for Real-Time Applications

The Position Based Fluids (PBF) method is a state-of-the-art approach fo...

Partitioned Deep Learning of Fluid-Structure Interaction

We present a partitioned neural network-based framework for learning of ...

Multirate Partitioned Runge-Kutta Methods for Coupled Navier-Stokes Equations

Earth system models are complex integrated models of atmosphere, ocean, ...

Levels of Coupling in Dyadic Interaction: An Analysis of Neural and Behavioral Complexity

From an enactive approach, some previous studies have demonstrated that ...