Results 51 to 60 of about 21,854 (248)

The radiating part of circular sources [PDF]

, 2010
An analysis is developed linking the form of the sound field from a circular source to the radial structure of the source, without recourse to far-field or other approximations.
Carley M., Freund J. B., Gutin L., Jordan P., Li X., Michael Carley, Michel U., Michel U., Oberhettinger F., Sinayoko S.   +9 more
core   +3 more sources

Quantum Iterative Methods for Solving Differential Equations with Application to Computational Fluid Dynamics

Advanced Quantum Technologies, Volume 9, Issue 2, February 2026.
Quantum algorithms for differential equations are developed with applications in computational fluid dynamics. The methods follow an iterative simulation framework, implementing Jacobi and Gauss–Seidel schemes on quantum registers through linear combinations of unitaries.
Chelsea A. Williams, Antonio A. Gentile, Vincent E. Elfving, Daniel Berger, Oleksandr Kyriienko   +4 more
wiley   +1 more source

Multi-objective Optimization of Horizontal Axis Wind Turbine Arrays: Impact of Spacing Distance on Noise Generation and Power Efficiency [PDF]

Journal of Applied Fluid Mechanics
This work explores the effect of spacing between co-axially positioned Horizontal Axis Wind Turbines (HAWTs) on their aerodynamic behavior and acoustic emissions under uniform inflow conditions. The aerodynamic simulations employ the Actuator Disk Method
A. Amoura, S. Khelladi, A. Smaili, M. N. Hamlaoui, S. Kouidri   +4 more
doaj   +1 more source

The Methodological and Experimental Research on the Identification and Localization of Turbomachinery Rotating Sound Source

Energies, 2022
The localization and quantification of turbomachinery rotating sound sources is an important challenge in the field of aeroacoustics. In order to compensate the motion of a rotating sound source, a rotating beamforming technique is developed and applied ...
Kunbo Xu, Yun Shi, Weiyang Qiao, Zhirong Wang   +3 more
doaj   +1 more source

Lift-up, Kelvin-Helmholtz and Orr mechanisms in turbulent jets [PDF]

, 2020
Three amplification mechanisms present in turbulent jets, namely lift-up, Kelvin–Helmholtz and Orr, are characterized via global resolvent analysis and spectral proper orthogonal decomposition (SPOD) over a range of Mach numbers.
Cavalieri, André V. G., Colonius, Tim, Nogueira, Petrônio A. S., Pickering, Ethan, Rigas, Georgios, Schmidt, Oliver T.   +5 more
core   +2 more sources

Effects of flapping wing kinematics on the aeroacoustics of hovering flight

Journal of Sound and Vibration, 2019
Despite the recent interest in flapping wing aerodynamics, the aerodynamic sound generation mechanism of a flapping wing is inadequately understood. In this paper, the interplay between the wing motion, resulting unsteady aerodynamics, and aeroacoustics ...
Kabilan Nedunchezian, Chang-kwon Kang, H. Aono   +2 more
semanticscholar   +1 more source

Tutorial Overview: Numerical Synergy in Muffler Acoustic Design A Critical Comparison of TMM, FEM, and CFD Approaches for Transmission Loss Quantification

Engineering Reports, Volume 8, Issue 1, January 2026.
Experimental measurements reveal distinct performance boundaries: TMM achieves rapid convergence (< 2 dB error below 2000 Hz) but neglects 3D wave effects; FEA maintains < 10% deviation up to 3500 Hz with 90% reduced computational cost versus CFD; while transient CFD captures broadband attenuation trends despite 10× higher resource demands.
Bin Fang, Tong Wei, Yi Yang, Xintie Wang
wiley   +1 more source

A benchmark case for aeroacoustic simulations involving fluid-structure-acoustic interaction transferred from the process of human phonation

Acta Acustica
Modeling fluid-structure-acoustic interaction is a highly challenging task and currently there is a lack of available benchmark datasets. For instance, to understand the processes of human phonation, it is essential to fully understand the fluid ...
Schoder Stefan, Falk Sebastian, Wurzinger Andreas, Lodermeyer Alexander, Becker Stefan, Kniesburges Stefan   +5 more
doaj   +1 more source

Acoustic Boundary Conditions for Can-Annular Combustors

International Journal of Turbomachinery, Propulsion and Power, 2023
This paper derives and validates an analytical model for acoustic boundary conditions on a can-annular gas turbine combustion system composed of discrete cans connected to an open annulus upstream of a turbine.
James Brind
doaj   +1 more source

Acoustic Assessment of Twin-engined Turboprop Layout [PDF]

, 2018
No abstract ...
Barakos, George N., Brown, Nicholas, Chirico, Giulia   +2 more
core