Study on acoustic propagation problems based on the two-dimensional moving virtual node technique of the CSRPIM

Xiao，Qihang1; Zhang，Guiyong1,2; Huang，Huakun3; Zhang，Yang1

2024-09-01

10.1016/j.enganabound.2024.105815

Engineering Analysis with Boundary Elements   影响因子和分区

0955-7997

The Finite Element Method (FEM) is a strong tool for acoustic propagation problems, but dispersion errors in linear triangular elements, stemming from their inherent “over-stiff” nature, can pose significant trouble. This issue can be effectively solved by the moving virtual node technique. In this paper, the two-dimensional (2D) form of the moving virtual node technique is derived and introduced into the cell-based smoothed radial point interpolation method (CSRPIM). The superiority of the CSRPIM with the moving virtual node technique (CSRPIM-T4-Cdm) is proved by two benchmarks with analytical solution. The focus of this article is to establish a hybrid model to simulate the flow-induced noise by combining this method with Computational Fluid Dynamics (CFD). The hybrid CSRPIM-T4-Cdm/CFD model fully utilizes its capability to control dispersion errors in acoustic propagation, enhancing the accuracy of numerical prediction. This paper provides a detailed study of the theoretical derivation, development process, and validation of the hybrid CSRPIM-T4-Cdm/CFD model. Finally, the hybrid CSRPIM-T4-Cdm/CFD model is applied to analyze the characteristic of turbulence interference noise of cylinder-hydrofoil.

Acoustic radiation Condensed shape function Dispersion error Gradient smoothing technique Smoothed radial point interpolation method

SCI ; EI

英语

其他

20242316201260

Acoustic noise ; Dispersion (waves) ; Errors ; Interpolation

Computer Applications:723.5 ; Acoustic Noise:751.4 ; Numerical Methods:921.6 ; Mechanics:931.1

ENGINEERING

2-s2.0-85194921027

Scopus

1.State Key Laboratory of Structural Analysis,Optimization and CAE Software for Industrial Equipment,School of Naval Architecture Engineering,Dalian University of Technology,Dalian,116024,China
2.Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai,200240,China
3.Department of Mechanics and aerospace engineering,Southern University of Science and Technology,Shenzhen,518055,China

Xiao，Qihang,Zhang，Guiyong,Huang，Huakun,et al. Study on acoustic propagation problems based on the two-dimensional moving virtual node technique of the CSRPIM[J]. Engineering Analysis with Boundary Elements,2024,166.

Xiao，Qihang,Zhang，Guiyong,Huang，Huakun,&Zhang，Yang.(2024).Study on acoustic propagation problems based on the two-dimensional moving virtual node technique of the CSRPIM.Engineering Analysis with Boundary Elements,166.

Xiao，Qihang,et al."Study on acoustic propagation problems based on the two-dimensional moving virtual node technique of the CSRPIM".Engineering Analysis with Boundary Elements 166(2024).