Results 11 to 20 of about 304 (177)

The Technique of MIEELDLD in Computational Aeroacoustics [PDF]

Journal of Applied Mathematics, 2012
The numerical simulation of aeroacoustic phenomena requires high-order accurate numerical schemes with low dispersion and low dissipation errors. A technique has recently been devised in a Computational Fluid Dynamics framework which enables optimal ...
A. R. Appadu
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Computational aeroacoustics of human phonation [PDF]

EPJ Web of Conferences, 2013
The current paper presents a CFD model of flow past vibrating vocal folds coupled to an acoustic solver, which calculates the sound sources from the flow field in a hybrid approach.
Šidlof P., Zörner S.
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Computational aeroacoustics of the EAA benchmark case of an axial fan

Acta Acustica, 2020
This contribution benchmarks the aeroacoustic workflow of the perturbed convective wave equation and the Ffowcs Williams and Hawkings analogy in Farassat’s 1A version for a low-pressure axial fan.
Schoder Stefan, Junger Clemens, Kaltenbacher Manfred   +2 more
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Review of Lattice Boltzmann Method Applied to Computational Aeroacoustics

Archives of Acoustics, 2019
This paper presents the research studies carried out on the application of lattice Boltzmann method (LBM) to computational aeroacoustics (CAA). The Navier-Stokes equation-based solver faces the difficulty of computational efficiency when it has to ...
Weidong SHAO, Jun LI
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Sound radiation by a vortex pair moving near a rectangular cylinder.

Nihon Kikai Gakkai ronbunshu, 2022
The sound generated by a vortex pair moving close to a rectangular cylinder is studied by high-resolution simulations of the two-dimensional unsteady compressible Navier-Stokes equations at Mach numbers ranging from 0.05 to 0.3.
Tsuyoshi KANUMA, Yohei INOUE, Hiroshi MAEKAWA   +2 more
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Validation of a Discontinuous Galerkin Implementation of the Time-Domain Linearized Navier–Stokes Equations for Aeroacoustics

Aerospace, 2016
The propagation of small perturbations in complex geometries can involve hydrodynamic-acoustic interactions, coupling acoustic waves and vortical modes. A propagation model, based on the linearized Navier–Stokes equations, is proposed.
Renzo Arina
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A Comprehensive Performance Evaluation Method Targeting Efficiency and Noise for Muzzle Brakes Based on Numerical Simulation

Energies, 2022
The installation of muzzle brake changes the flow direction of propellant gas, which leads to a decline in the recoil force but an increase in the muzzle flow noise of the side rear.
Xinyi Zhao, Ye Lu
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A study of aerodynamic sound generated from an airfoil placed in a flow with turbulence (2nd Report: In the case of airfoil subjected to circular-cylinder wake)

Nihon Kikai Gakkai ronbunshu, 2020
To clarify the mechanism for aerodynamic sound to be generated from a lifting surface placed in a flow with turbulence, wind-tunnel experiments and numerical simulations have been carried out for a flow around an airfoil subjected to the wake of a ...
Noriaki KOBAYASHI, Yasumasa SUZUKI, Chisachi KATO   +2 more
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Inlet Gap Effect on Tonal Noise Generated from a Voluteless Centrifugal Fan

International Journal of Turbomachinery, Propulsion and Power, 2022
In this study, three voluteless centrifugal fans are compared for their aeroacoustic performances. The tonal noise is predicted by coupling the IDDES with Formulation 1A of Farassat. The sources of the tonal noise at the blade passing frequency (BPF) are
Martin Ottersten, Hua-Dong Yao, Lars Davidson   +2 more
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A hybrid numericalexperimental study of the aerodynamic noise prediction

Journal of Thermal Engineering, 2018
An accurate noise prediction is important in order to reduce noise emission significantly and to prevent expensive after-design treatments. This study aims to examine the aerodynamics and aeroacoustics performance of an open system consisting of an axial
Beyza ALKAN
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