Processing and analysis methods for transonic cavity flow

Abstract

This paper focuses on the localisation of noise sources in transonic cavity flows. Beamforming is used to estimate the pressure fluctuations inside a resonant transonic cavity, showing the localisation of the main sources of noise using an acoustic array and also combining it with a mean flow-field. The influence of the microphone array position, density, and shape are investigated. The presented method models the noise propagation with simple assumptions that are easily applicable to wind tunnel testing, and may help localise the noise sources from complex geometries without intrusive methods.

Store Release Trajectory Variability from Weapon Bays Using Scale-Adaptive Simulations

“…The solver is described in references [8,16,17,18] and has been extensively validated for cavity flows. DES is by far the most common way to account of the effect of the turbulence of cavity flows.…”

“…The CFD method has been validated for the M219 cavity flow [20], and results can be found in reference [17]. Nevertheless, validation for store release separation is given here.…”

Multi-disciplinary simulations of stores in weapon bays using scale adaptive simulation

“…The Helicopter Multi-Block (HMB3) [9,10,11] code is used in the present work. The solver is described in references [12,13,14,15] and has been extensively validated for cavity flows. DES is by far the most common way to account for the effect of turbulence in cavity flows.…”

Multi-disciplinary Simulations of Stores in Weapon Bays using Scale Adaptive Simulation

“…The solver is described in references [11,12,13,14] and has been extensively validated for cavity flows. DES is by far the most common way to account for the effect of turbulence in cavity flows.…”