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RANS/LES and LBM/VLES Aero-Acoustic Analysis of Weapon Bays at Transonic Mach Number

Year: 2025

Type: conference-paper

Abstract: Numerical aero-acoustic analysis was conducted on a weapon bay of a generic aircraft model using two conceptually different solvers, one based on the Navier-Stokes equations, the other based on the lattice-Boltzmann approach. The bay model was installed on a representative combat aircraft, incorporating doors and a store. The effect of angle of attack and store position on the aero-acoustic response within the weapon bay was analysed at a transonic Mach number of 0.90. It was found that both numerical approaches are capable of predicting, with good accuracy, the weapon bay's acoustic spectrum (+-10dB) and store forces and moments (+-10%), as compared to experimental data.

DOI: 10.2514/6.2025-3850

Authors: David Bacci, Alistair J. Saddington, Hadar Ben-Gida

Institutions: Cranfield University, Technion – Israel Institute of Technology

Language: English

Topic: Computational Fluid Dynamics and Aerodynamics

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4412486412

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