POD analysis of the unsteady behavior of blade wake under the influence of laminar separation vortex shedding in a compressor cascade

L Shi, H Ma, X Yu - Aerospace Science and Technology, 2020 - Elsevier
When the laminar-to-turbulent transition occurs close to the blade trailing edge, the periodic
passage of shear layer roll-up vortices over the trailing edge would influence the unsteady …

[HTML][HTML] Numerical investigation of leading edge noise reduction on a rod-airfoil configuration using porous materials and serrations

C Teruna, F Avallone, D Casalino, D Ragni - Journal of Sound and …, 2021 - Elsevier
A lattice-Boltzmann method has been employed to study the aeroacoustics and
aerodynamics of airfoils equipped with leading edge treatments, namely the porous leading …

Advanced mesh generation and update methods for 3D flow simulations

AA Johnson, TE Tezduyar - Computational Mechanics, 1999 - Springer
Advanced mesh generation and update methods for parallel 3D computation of complex
flow problems are presented. The complexities of the class of problems targeted include …

On the simulation of trailing edge noise with a hybrid LES/APE method

R Ewert, W Schröder - Journal of Sound and Vibration, 2004 - Elsevier
A hybrid method is applied to predict trailing edge noise based on a large eddy simulation
(LES) of the compressible flow problem and acoustic perturbation equations (APE) for the …

[HTML][HTML] Airfoil trailing-edge noise and drag reduction at a moderate Reynolds number using wavy geometries

TA Smith, CA Klettner - Physics of Fluids, 2022 - pubs.aip.org
This study utilizes a hybrid aeroacoustic model to investigate how airfoils with spanwise
wavy geometries can be used to reduce trailing-edge noise alongside improving the …

An overset finite-element large-eddy simulation method with applications to turbomachinery and aeroacoustics

C Kato, M Kaiho, A Manabe - J. Appl. Mech., 2003 - asmedigitalcollection.asme.org
A numerical method for the prediction of an unsteady fluid flow in a complex geometry that
involves moving boundary interfaces is presented in this paper. The method is also …

Wavelet-based pressure decomposition for airfoil noise in low-Mach number flows

D Kang, S Lee, D Brouzet, SK Lele - Physics of Fluids, 2023 - pubs.aip.org
The paper applies a wavelet filtering method based on the recursive denoising algorithm to
airfoil noise in low-Mach number flows. The pressure field around the airfoil is decomposed …

Prediction of sound generated by a rod–airfoil configuration using EASM DES and the generalised Lighthill/FW-H analogy

B Greschner, F Thiele, MC Jacob, D Casalino - Computers & fluids, 2008 - Elsevier
Sound generated by an airfoil in the wake of a rod is predicted numerically by using a
Detached-Eddy Simulation (DES) unsteady flow field and a Ffowcs Williams and Hawkings …

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 …

Numerical investigation on aerodynamic noise of flow past a cylinder with different spanwise lengths

G Chen, B Zang, M Azarpeyvand - Physics of Fluids, 2023 - pubs.aip.org
ABSTRACT A numerical investigation is conducted on aerodynamic noise of flow past a
circular cylinder with different spanwise lengths (0.5 pD, pD, 2pD, and 4pD) at Re ¼10000 …