Mach wave radiation by mixing layers. I: Analysis of the sound field. II: Analysis of the source field
type: Item
instance of: scholarly article
title: Mach wave radiation by mixing layers. I: Analysis of the sound field. II: Analysis of the source field
zbMATH Open document ID: 0928.76100
published in: Theoretical and Computational Fluid Dynamics
publication date: 1999-02-02T00:00:00Z
review text: The purpose is to present temporal direct numerical simulations (DSN) of sound emitted by free mixing layers. The study consists of two parts. In part I, the authors use a wave packet model to connect the sound field of large-scale structures in a time-developing mixing layer to the sound field of large-scale structures in a spatially developing mixing layer. The DSN databases for a supersonic time-developing mixing layer are briefly described, and the sound field of a temporally evolving supersonic wave packet is numerically analyzed in a test case. In part II, the authors estimate the emitted sound intensity by using the temporal DSN sound source field and an acoustic analogy. The ultimate goal is to estimate the sound emitted by the spatially developing mixing layer.
Mathematics Subject Classification ID: 76Q05
zbMATH DE Number: 1248306
zbMATH Keywords: supersonic mixing layer
zbMATH Keywords: direct numerical simulations
zbMATH Keywords: wave packet model
zbMATH Keywords: large-scale structures
zbMATH Keywords: time-developing mixing layer
zbMATH Keywords: spatially developing mixing layer
zbMATH Keywords: sound intensity
zbMATH Keywords: acoustic analogy
author: E. J. Avital
author: N. D. Sandham
author: Kai H. Luo
MaRDI profile type: Publication
full work available at URL: s001620050100
OpenAlex ID: W2093647333
DOI: 10.1007/S001620050100
description: scientific article; zbMATH DE number 1248306