Perturbed convective wave equation for low-to-medium Mach number subsonic flows

Schoder S, Mohamadi Bagheri E, Bogey C, Bailly C (2026)

Publication Type: Journal article

Publication year: 2026

Journal

Journal of Sound and Vibration Elsevier

Book Volume: 623

Article Number: 119549

DOI: 10.1016/j.jsv.2025.119549

Abstract

A generalization of the perturbed convective wave equation is proposed. It allows extracting the acoustic field and the vortical dynamics from a compressible high-fidelity flow simulation. The wave equation computes the acoustic velocity potential, with a source term based on a source potential. This source potential describes the pressure dynamics of vortices and is identical to the incompressible pressure for incompressible-modeled flows. The application to an isothermal, subsonic two-dimensional mixing layer sound generation problem validates the wave equation. The results of the acoustic far-field pressure are comparable to the direct numerical reference solution, deviating less than 1.8dB.

Authors with CRIS profile

Eman Mohamadi Bagheri Lehrstuhl für Strömungsmechanik (LSTM)

Involved external institutions

École Centrale de Lyon FR France (FR) Technische Universität Graz AT Austria (AT)

How to cite

APA:

Schoder, S., Mohamadi Bagheri, E., Bogey, C., & Bailly, C. (2026). Perturbed convective wave equation for low-to-medium Mach number subsonic flows. Journal of Sound and Vibration, 623. https://doi.org/10.1016/j.jsv.2025.119549

MLA:

Schoder, S., et al. "Perturbed convective wave equation for low-to-medium Mach number subsonic flows." Journal of Sound and Vibration 623 (2026).

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