Hydrodynamic Noise and Radiated Mechanism of 3D Cavity

Yu Wang; Bai Zhou Li

doi:10.4028/www.scientific.net/AMM.217-219.2590

Paper Titles

System of Premixed Abrasive Jet Cleaning and Derusting on Steel Tube Inwall
p.2571

On-Line Detection Distribution Strategy Research of Complex Surface Based on Bayesian Networks
p.2575

Method of Identifying Key Quality Characteristics in Multistage Manufacturing Process Based on PLSR
p.2580

Transformer Fault Diagnosis of Rough-Neural Network Based on MEA
p.2585

Hydrodynamic Noise and Radiated Mechanism of 3D Cavity
p.2590

The Study on the Ultrasonic Testing and Defects in Quantitative Analysis for the Scroll-Type Profile
p.2594

Concurrent Tolerancing Design Based on Time Value of Manufacture-Quality Loss Cost
p.2598

Survey and Analyze the Line Output Characteristics in Inkjet Printing
p.2603

A Directional Multivariate Control Chart for Monitoring Univariate Autocorrelated Processes
p.2607

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 217-219Hydrodynamic Noise and Radiated Mechanism of 3D...

Hydrodynamic Noise and Radiated Mechanism of 3D Cavity

Abstract:

The flow past 3D rigid cavity is a common structure on the surface of the underwater vehicle. The hydrodynamic noise generated by the structure has attracted considerable attention in recent years. Based on LES-Lighthill equivalent sources method, a 3D cavity is analyzed in this paper, when the Mach number is 0.0048. The hydrodynamic noise and the radiated mechanism of 3D cavity are investigated from the correlation between fluctuating pressure and frequency, the near-field sound pressure intensity, and the propagation directivity. It is found that the hydrodynamic noise is supported by the low frequency range, and fluctuating pressure of the trailing-edge is the largest, which is the main dipole source.