contributor author | Zhiliang Hong | |
contributor author | Zengze Yu | |
contributor author | Limei Liu | |
date accessioned | 2022-02-01T00:32:48Z | |
date available | 2022-02-01T00:32:48Z | |
date issued | 7/1/2021 | |
identifier other | %28ASCE%29AS.1943-5525.0001282.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4271614 | |
description abstract | A two-dimensional (2D) meshless model based on the vortex method is developed to predict the aerodynamic noise of a noncompact open cavity, which calculates the flow and sound field results simultaneously. The evolution of the shear layer over the cavity mouth is described through discrete vortices, and key parameters including strength, position, and velocity of the vortices are obtained. Meanwhile, the vortices are employed as the sound source to simulate the sound generation by using vortex sound theory, together with the time-domain boundary element method (TDBEM) to account for the sound scattering effect of the rigid wall. The predicted results coincide reasonably well with the previous experimental data, and the computational cost is remarkably reduced compared with pure numerical methods. Moreover, the influence of the vortex convection velocity in the streamwise direction on the oscillation frequency and the mode jump characteristics are discussed in detail, which helps to improve the basic understanding of cavity noise. | |
publisher | ASCE | |
title | Simultaneous Solution for Vortex and Sound of Cavity Oscillation Based on a Meshless Model | |
type | Journal Paper | |
journal volume | 34 | |
journal issue | 4 | |
journal title | Journal of Aerospace Engineering | |
identifier doi | 10.1061/(ASCE)AS.1943-5525.0001282 | |
journal fristpage | 04021031-1 | |
journal lastpage | 04021031-10 | |
page | 10 | |
tree | Journal of Aerospace Engineering:;2021:;Volume ( 034 ):;issue: 004 | |
contenttype | Fulltext | |