Work

The Selective Cell-Based Smoothed Finite Element Method for Partitioned Semi-Implicit Fluid–Structure Interaction

Year: 2026

Type: article

Abstract: A selective cell-based smoothed finite element method (CSFEM) is incorporated into a partitioned semi-implicit coupling scheme for fluid–structure interaction (FSI) based on four-node quadrilateral element. The selective CSFEM invokes full and reduced integrations at different steps of the characteristic-based split (CBS) scheme that solves the Navier–Stokes equations in a fractional-step manner. Because the semi-implicit coupling framework is also underpinned by the CBS scheme, an hourglass control is adopted to stabilize both the partitioned algorithm and selective CSFEM over under-integrated smoothing cells (SCs). The elastodynamics equations are computed via the conventional CSFEM. The developed technique is validated against available data for different FSI examples. In addition to satisfactory results, it can save more computer time than the original semi-implicit coupling algorithm using the standard CSFEM.

Source: Journal of Pressure Vessel Technology

DOI: 10.1115/1.4071048

Author: Tao He

Institution: Shanghai Normal University

Language: English

Topic: Advanced Numerical Methods in Computational Mathematics

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funder: National Natural Science Foundation of China

Award: G6824170997