Title: A brief review on partitioned semi-implicit coupling methods in computational fluid-structure interaction

Authors: Tao He

Addresses: Department of Civil Engineering, Shanghai Normal University, Shanghai, 201418, China

Abstract: This brief review summarises the procedure and utilisation of the partitioned semi-implicit coupling methods in computational fluid-structure interaction. The semi-implicit framework enables individual fields to be computed in an explicit-implicit way that takes advantage of traditional partitioned explicit and implicit coupling schemes. Depending on the use of the Chorin-Témam projection method, the partitioned semi-implicit coupling algorithms are classified into the projection-based (PB) and non-projection-based (NPB) schemes. We look over algorithmic implementation, technical improvement and applications of the PB and NPB schemes to draw a general outline of available researches on the semi-implicit methodology. It is also revealed that some previous partitioned methods fall into the NPB category. A new PB algorithm derived from the characteristic-based split scheme is selectively reviewed as well.

Keywords: fluid-structure interaction; partitioned semi-implicit coupling method; projection method; characteristic-based split; arbitrary Lagrangian-Eulerian; ALE.

DOI: 10.1504/PCFD.2025.144819

Progress in Computational Fluid Dynamics, An International Journal, 2025 Vol.25 No.2, pp.109 - 122

Received: 21 Jun 2024
Accepted: 13 Oct 2024
Published online: 03 Mar 2025 *

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