Results 91 to 100 of about 21,854 (248)
Near-Field Pressure Signature of New-Concept Supersonic Aircraft Obtained Using Open-Source Approach
SciThis study investigates the numerical prediction of the sonic boom phenomenon in supersonic aircraft by evaluating the near-field pressure signatures of three different aeroshapes.
Antimo Glorioso +3 more
doaj +1 more source
Aerospace, 2015 Air traffic is growing at a steady rate of 3% to 5% per year in most regions of the world, implying a doubling every 15–25 years. This requires major advances in aircraft noise reduction at airports, just not to increase the noise exposure due to the ...
Luís M. B. C. Campos
doaj +1 more source
Report on the final panel discussion on computational aeroacoustics [PDF]
Some important conclusions about future prospects for aeroacoustics in general, and for computational aeroacoustics in particular, that were reached in the course of the Final Panel Discussion of the Workshop on Computational Aeroacoustics held from 6 to
Lighthill, James
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CAA Modeling of Helicopter Main Rotor in Hover [PDF]
, 2017 In this work rotor aeroacoustics in hover is considered. Farfield observers are used and the nearfield flow parameters are obtained using the in house HMB and commercial Fluent CFD codes (identical hexa-grids are used for both solvers). Farfield noise at
Barakos, George +5 more
core +2 more sources
A very accurate Arbitrary Lagrangian–Eulerian meshless method for Computational Aeroacoustics
Computer Methods in Applied Mechanics and Engineering, 2018 In this work, we propose a new meshless approach based on a Galerkin discretization of a set of conservation equations on an Arbitrary Lagrangian–Eulerian framework.
L. Ramírez +4 more
semanticscholar +1 more source
Fluidic Ultrasound Generation for Non‐Destructive Testing
Advanced Materials, Volume 36, Issue 18, May 2, 2024.Air‐coupled ultrasound enables material characterization and fault detection for specimens that are very large or do not allow contact with other materials. This study presents a novel fluidic transducer that can withstand harsh environments and generates a high‐amplitude ultrasonic signal without impedance mismatch to air.
Benjamin Bühling +2 more
wiley +1 more source
Acoustic Experiments for Special Forces Helicopter Operations
AerospaceFor military missions, the helicopter is a versatile aircraft with many benefits. However, the high levels of noise radiation enable large acoustic detection ranges. For mission success, knowledge of acoustic radiation and propagation is paramount.
W. F. J. Olsman
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Theoretical Foundation of Rapid Distortion Theory on Transversely Sheared Mean Flows
Fluids, 2020 The focus of this paper is on Rapid Distortion Theory on transversely sheared mean flows, which is often used to investigate turbulence-solid surface interactions.
Marvin E. Goldstein
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Simulating Stirred Tank Reactor Characteristics with a Lattice Boltzmann CFD Code
Chemical Engineering &Technology, Volume 47, Issue 3, Page 586-595, March 2024.There is a need for reliable models of mixing in stirred tanks, which is widely used in the chemical and process industry but complex and not fully understood. A lattice Boltzmann code with a large eddy simulation turbulence model was used to determine power numbers and mixing times in stirred tanks with different impellers.
Jule Kersebaum +3 more
wiley +1 more source
The Update of an Aerodynamic Wind-Tunnel for Aeroacoustics Testing
Journal of Aerospace Technology and Management, 2014 This paper describes the update and characterization of a previously pure aerodynamics wind-tunnel into a facility able to simultaneously execute aerodynamics and aeroacoustics testing. It is demonstrated that the application of high-performance acoustic
Leandro Dantas Santana +3 more
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