Zobrazeno 1 - 10 of 70 pro vyhledávání: '"Jean-Christophe Valière"'
1
Dependence of the internal geometry for the calculation of the Helmholtz frequency in an axisymmetrical acoustic resonator
Autor: Jean-Christophe Valière, Christian Prax
Publikováno v: The Journal of the Acoustical Society of America. 150:4053-4063
The well-known formula of Helmholtz is well established and perfectly suited to predict the resonance frequency of cylindrical resonators when using neck length corrections. The potteries celled in the walls of medieval buildings are the object of ar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e2d945347a50e830dfb4b3833f8ae0c
https://doi.org/10.1121/10.0007461
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2
Experimental investigation of oscillating flow characteristics at the exit of a stacked mesh grid regenerator
Autor: Jean-Christophe Valière, Hélène Bailliet, Islam A. Ramadan
Publikováno v: Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, Acoustical Society of America, 2021, 149 (2), pp.807-818. ⟨10.1121/10.0003375⟩
The aim of this study is to investigate the oscillating flow velocity field at the exit of different stacked mesh grid regenerators using Particle Image Velocimetry measurements. Twelve different experimental cases are discussed, yielding oscillating
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bac6476e6e8b41c952e7b7cc95620e3b
https://doi.org/10.1121/10.0003375
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3
Experimental investigations on cylindrical critical flow Venturi nozzles with roughness
Autor: Jean-Christophe Valière, Eric Foucault, Marc Antoine Lambert, Rémy Maury, Guillaume Lehnasch
Publikováno v: Flow Measurement and Instrumentation. 81:102002
In an attempt to redefine and improve the ISO9300 norm, it is possible to see the emergence of a universal ( C d ) curve. For this, all the influential factors must be correctly understood within their range of variation. In recent discussions, the e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4519f27a7ea55a6e7d3c2d8c0e291d58
https://doi.org/10.1016/j.flowmeasinst.2021.102002
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6
Experimental and numerical investigations on the shape and roughness of cylindrical critical flow venturi nozzles (CFVN)
Autor: Guillaume Lehnasch, Eric Foucault, Marc Antoine Lambert, Jean-Christophe Valière, Rémy Maury
Publikováno v: 19th International Congress of Metrology (CIM2019).
This paper describes a part of a research project aimed at reducing the uncertainty of the determination of the CFVN discharge coefficient. In the current state of the work, there are two parallel studies: an experimental and a numerical. Experiments
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e0e8165aa87de04e94bec02ae871f426
https://doi.org/10.1051/metrology/201917003
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7
Experimental investigation of the influence of natural convection and end-effects on Rayleigh streaming in a thermoacoustic engine
Autor: Jean-Christophe Valière, Hélène Bailliet, Islam A. Ramadan
Publikováno v: Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, Acoustical Society of America, 2018, 143 (1), pp.361-372. ⟨10.1121/1.5021331⟩
International audience; The influence of both the natural convection and end-effects on Rayleigh streaming pattern in a simple standing-wave thermoacoustic engine is investigated experimentally at different acoustic levels. The axial mean velocity in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe6c911c766ffac0f7c238e50c74aa71
https://pubmed.ncbi.nlm.nih.gov/31255098
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8
Fast acoustic streaming in standing waves: Generation of an additional outer streaming cell
Autor: Ida Reyt, Hélène Bailliet, Virginie Daru, Catherine Weisman, Diana Baltean-Carlès, Solène Moreau, Jean-Christophe Valière
Publikováno v: Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, Acoustical Society of America, 2013, 134 (3), pp.1791-1801. ⟨10.1121/1.4817888⟩
Journal of the Acoustical Society of America, 2013, 134 (3), pp.1791-1801. ⟨10.1121/1.4817888⟩
Rayleigh streaming in a cylindrical acoustic standing waveguide is studied both experimentally and numerically for nonlinear Reynolds numbers from 1 to 30 [Re(NL)=(U0/c0)(2)(R/δν)(2), with U0 the acoustic velocity amplitude at the velocity antinode
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac538071d189bfe4c295bf0574cedf6a
https://doi.org/10.1121/1.4817888
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9
Acoustic velocity measurement by means of Laser Doppler Velocimetry: Development of an Extended Kalman Filter and validation in free-field measurement
Autor: Alain Le Duff, Bruno Gazengel, Guy Plantier, Jean-Christophe Valière
Publikováno v: Mechanical Systems and Signal Processing
Mechanical Systems and Signal Processing, Elsevier, 2016, 70-71 (5), pp.832-852. ⟨10.1016/j.ymssp.2015.08.020⟩
International audience; A signal processing technique, based on the use of an Extended Kalman Filter, has been developed to measure sound fields by means of Laser Doppler Velocimetry in weak flow. This method allows for the parametric estimation of b
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf6f8c529ac76b5083c2d3d2855c6af7
https://hal.archives-ouvertes.fr/hal-01877675
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10
Development of Laser Techniques for Acoustic Boundary Layer Measurements. Part II: Comparison of LDV and PIV Measurements to Analytical Calculation
Autor: Romuald Boucheron, Solenn Moreau, Jean-Christophe Valière, Hélène Bailliet, Gaelle Poignand
Publikováno v: Acta Acustica united with Acustica
Acta Acustica united with Acustica, Hirzel Verlag, 2009, 95 (5), pp.805-813. ⟨10.3813/AAA.918211⟩
International audience; The adaptation of Laser Doppler Velocimetry (LDV) and Particle Image Velocimetry (PIV) for acoustic boundary layer measurements is considered. The specificities of acoustic boundary layer are presented and the theoretical expr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::924086a0718ca2bdae61b9b0a3c54f45
https://doi.org/10.3813/aaa.918211
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