Results 31 to 40 of about 304 (177)

Aeroacoustic formulations for confined flows based on incompressible flow data

Acta Acustica, 2022
The hybrid aeroacoustic approach is an efficient way to address the issue of the disparity of scales in Computational AeroAcoustics (CAA) at low Mach numbers.
Maurerlehner Paul, Schoder Stefan, Tieber Johannes, Freidhager Clemens, Steiner Helfried, Brenn Günter, Schäfer Karl-Heinz, Ennemoser Andreas, Kaltenbacher Manfred   +8 more
doaj   +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

Large eddy simulation of passive noise reduction in subsonic jets by using chevrons

Journal of Mechanical Engineering and Sciences
Chevrons are widely used passive noise reduction devices that have emerged as an significant breakthrough for aicraft industry in enabling substantial noise reduction without sacrificing thrust.
K. Tewari, A. Dewan, V. Narayanan, G. Dogra   +3 more
doaj   +1 more source

Aeroacoustic Sound Source Characterization of the Human Voice Production-Perturbed Convective Wave Equation

Applied Sciences, 2021
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 based on the perturbed convective wave equation.
Stefan Schoder, Paul Maurerlehner, Andreas Wurzinger, Alexander Hauser, Sebastian Falk, Stefan Kniesburges, Michael Döllinger, Manfred Kaltenbacher   +7 more
doaj   +1 more source

Numerical Simulation of Flow‐Control Effects on Flow Field and Store Separation Trajectory in a Curved‐Lip Cavity

International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
Internal weapon bays are essential for maintaining aircraft stealth but generate highly unsteady flow that complicates store separation. This study numerically investigates aerodynamic modifications to both the flow field and the store separation trajectory induced by two flow‐control methods, a spoiler and a jet, using an URANS approach.
Bing Zhang, Hengxin Wang, Ming Hou, Sitong Chen, Adel Ghenaiet   +4 more
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

Aerodynamic-Aeroacoustic Optimization of a Baseline Wing and Flap Configuration

Applied Sciences, 2022
Optimization design was widely used in the high-lift device design process, and the aeroacoustic reduction characteristic is an important objective of the optimization.
Shengjun Ju, Zhenxu Sun, Dilong Guo, Guowei Yang, Yeteng Wang, Chang Yan   +5 more
doaj   +1 more source

Plasma Actuators for Energy‐Efficient Aerodynamic Flow Control: A Review of Modeling Approaches

International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
Plasma actuators are innovative devices employed for aerodynamic flow control, functioning based on magnetohydrodynamic principles to manipulate electrically conductive fluid flows around components such as airfoils, cylinders, wind turbine blades, and vehicles.
Sarallah Abbasi, Mohammad Amin Daraee, Abazar Abadeh, Mohammad Rezwan Habib   +3 more
wiley   +1 more source

Development of a computational framework for low-Reynolds number propeller aeroacoustics

Archives of Mechanics
The paper focuses on the development and validation of a new computational framework designed for the prediction of tonal and broadband noise radiation of propellers of unmanned aerial vehicles (UAVs) operating in the low-Reynolds number regime.
O. Szulc, T. Suresh, P. Flaszyński
doaj   +1 more source

Numerical Investigation of the Aerodynamic and Aeroacoustic Characteristics of a Double-suction Centrifugal Fan under Different Operating Conditions [PDF]

Journal of Applied Fluid Mechanics
Centrifugal fans are widely used in the ventilation and domestic appliance industries. Their aerodynamic and aeroacoustic characteristics vary significantly in different application scenarios and operating conditions.
H. Zhang, J. W. Yang, S. G. Zhang, B. Li, J. Wei, Y. F. Zhang   +5 more
doaj   +1 more source