Setting up an experimental apparatus for the study of multimodal acoustic propagation with turbulent mean flow

Bailliet, Hélène; Boucheron, Romuald; Dalmont, Jean‐Pierre; Herzog, Philippe; Moreau, Solène; Valière, Jean-Christophe

doi:10.1016/j.apacoust.2011.07.008

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…6. Experimental apparatus [12] such criteria as accuracy in terms of computation time. The result predicts the performance of a silencer system, acoustic propagation inside a cylindrical duct in presence of a turbulent mean flow.…”

Section: Literature Rewievmentioning

confidence: 99%

A review of flow acoustic effects on a commercial automotive exhaust system - methods and materials

Mohamad

2019

Journal of Mechanical and Energy Engineering

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Literature review on flow acoustic methods and materials of an automotive muffler. a car is judged comfortable also depending on the acoustic level transmitted inside, and a thorough knowledge of acoustics of ducts and mufflers is needed for the design of efficient muffler configurations. Unstable exhaust gas at high temperature flowing from internal combustion engine manifold may cause of noise and vibrations conflicting with the high standard of acoustic comfort requested by this kind of vehicle. The basic gaols are to define most important methods to identify noise occur from the motion of fluid in case of turbulent model. Materials properties like velocity, temperature, thermal conductivity and density have been technical presented in this work.

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Section: Literature Rewievmentioning

confidence: 99%

A review of flow acoustic effects on a commercial automotive exhaust system - methods and materials

Mohamad

2019

Journal of Mechanical and Energy Engineering

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“…for the analysis of boundary layer phenomena [1,2] such as acoustic streaming [3,4] or the thermoacoustic effect [5,6], for acoustic near-field characterization [7], as well as for aeroacoustic investigations. The latter applies especially to the generation [8], the propagation [9] and the damping [10,11] of aircraft noise. Often, numerical simulations are limited because of missing or inadequate models and high calculation efforts due to the disparity of spatial scales.…”

Section: Introductionmentioning

confidence: 99%

Aeroacoustic near-field measurements with microscale resolution

Haufe

Pietzonka

Schulz

et al. 2014

Meas. Sci. Technol.

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In order to analyse aeroacoustic phenomena at near-fields, e.g. the sound–flow interaction at aircraft engine liners, measurements of the flow velocity and the acoustic particle velocity (APV) with microscale resolution are required. To this end, the APV measurement with a high spatial resolution of 10 µm was conducted by means of a laser Doppler velocity profile sensor. For validation of the APV measurements using the profile sensor in a superposed flow, a good agreement with indirect microphone measurements as a reference was achieved, up to a maximum Mach number of 0.25. Aeroacoustic measurements at a minimum distance of 350 µm to the perforation of a bias flow liner were performed using the profile sensor. As a result, acoustically induced velocity oscillations near the rim of the orifice were detected with microscale resolution. The phase-resolved oscillation field indicates vortex shedding from the perforation, which is initiated by the sound–flow interaction. Thus, it is demonstrated that the profile sensor is a valuable tool for analysing aeroacoustic phenomena at near-fields, down to the Kolmogorov scale.

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The lock-in technique applied to heat exchangers: A semi-analytical approach and its application to fouling detection

Lalot

Desmet

2017

Applied Thermal Engineering

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Setting up an experimental apparatus for the study of multimodal acoustic propagation with turbulent mean flow

Cited by 6 publications

References 15 publications

A review of flow acoustic effects on a commercial automotive exhaust system - methods and materials

A review of flow acoustic effects on a commercial automotive exhaust system - methods and materials

Aeroacoustic near-field measurements with microscale resolution

The lock-in technique applied to heat exchangers: A semi-analytical approach and its application to fouling detection

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