TABLE OF CONTENTS Fred Mendon a
It is true of aeroacoustics, as with most simulation-based engineering, that the engineer is pulled between two extremes: whether to undertake fully rigorous analyses with all the implied resource demands or, instead, to perform analyses of limited scope with quantified risk because the time scales in the industrial design cycles require as much. When the analyses involve large-eddy simulation (LES), this dilemma is brought sharply into focus. In this section we attempt to qualify important questions relating to the aeroacoustics simulation process to help the analyst make value judgements before, during, and after LES calculations, concentrating on data analysis and interpretation, because the processing of information ultimately defines the true worth of the outcome.
This section should be read with an industry perspective. It aims to extract maximum value from the modeling process by gathering useful information from computational fluid dynamics (CFD) analyses to maximize knowledge of the acoustics properties of simulated systems. In industry, these systems are diverse, covering many sectors ? most notably transportation. Some current topics of interest are listed in the following paragraphs.
The commercial aerospace operator s main noise-associated concerns are well documented: high-lift devices (Agarwal and Morris 2004), landing gears (Souliez et al. 2002), jet nozzles (Morris and Farassat 2002), and cabin and cockpit climate control devices (Mendon a et al. 2005). Military operations focus on the structural and aerodynamic instabilities of weapons and weapons bays (Henshaw 2000; Allen, Mendon a, and Kirkham...
