Hybrid aeroacoustic computations: State of art and new achievements

S Schoder, M Kaltenbacher - Journal of Theoretical and …, 2019 - World Scientific
This paper collects the state of the art and the tremendous progress that has been made in
hybrid modeling of aeroacoustic sound. Hybrid modeling is defined such that flow and …

Acoustic perturbation equations based on flow decomposition via source filtering

R Ewert, W Schröder - Journal of Computational Physics, 2003 - Elsevier
A family of acoustic perturbation equations is derived for the simulation of flow-induced
acoustic fields in time and space. The mean flow convection and refraction effects are part of …

Wind turbine noise generation and propagation modeling at DTU Wind Energy: A review

WJ Zhu, WZ Shen, E Barlas, F Bertagnolio… - … and Sustainable Energy …, 2018 - Elsevier
The present review paper provides a comprehensive overview of the research activities on
wind turbine aeroacoustics at DTU over the last 20 years, as well as it gives the state-of-the …

Linearized perturbed compressible equations for low Mach number aeroacoustics

JH Seo, YJ Moon - Journal of Computational Physics, 2006 - Elsevier
For efficient aeroacoustic computation at low Mach numbers, the linearized perturbed
compressible equations (LPCE) are proposed. The derivation is based on investigation of …

Equations for finite-difference, time-domain simulation of sound propagation in moving inhomogeneous media and numerical implementation

VE Ostashev, DK Wilson, L Liu, DF Aldridge… - The Journal of the …, 2005 - pubs.aip.org
Finite-difference, time-domain (FDTD) calculations are typically performed with partial
differential equations that are first order in time. Equation sets appropriate for FDTD …

Application limits of conservative source interpolation methods using a low mach number hybrid aeroacoustic workflow

S Schoder, A Wurzinger, C Junger, M Weitz… - Journal of Theoretical …, 2021 - World Scientific
In low Mach number aeroacoustics, the well-known disparity of scales allows applying
hybrid simulation models using different meshes for flow and acoustics, which leads to a fast …

[HTML][HTML] Aeroacoustic sound source characterization of the human voice production-perturbed convective wave equation

S Schoder, P Maurerlehner, A Wurzinger, A Hauser… - Applied Sciences, 2021 - mdpi.com
The flow-induced sound sources of human voice production are investigated based on a
validated voice model. This analysis is performed using a hybrid aeroacoustic workflow …

[HTML][HTML] Hybrid aeroacoustic approach for the efficient numerical simulation of human phonation

S Schoder, M Weitz, P Maurerlehner… - The Journal of the …, 2020 - pubs.aip.org
A hybrid aeroacoustic approach was developed for the efficient numerical computation of
human phonation. In the first step, an incompressible flow simulation on a three-dimensional …

Aerodynamic noise prediction for long-span bodies

JH Seo, YJ Moon - Journal of Sound and Vibration, 2007 - Elsevier
A computational methodology is proposed for aerodynamic noise prediction of long-span
bodies at low Mach numbers. The three-dimensional hydrodynamic field is computed by …

Perturbed compressible equations for aeroacoustic noise prediction at low mach numbers

JH Seo, YJ Moon - AIAA journal, 2005 - arc.aiaa.org
A revised formulation of a hydrodynamic/acoustic splitting method is proposed for
aeroacoustic noise prediction of wall-bounded shear flows at low Mach numbers. Based on …