Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Corona Discharge Velocimeter

Abstract : An acoustic velocity sensor is described. It uses a small volume of ionized gas as sensing element to estimate the velocity of air particles, especially their oscillations caused by an acoustic perturbation. The generation of charged particles is performed by a negative point-to-plane discharge, the plane anode being split into two electrically insulated parts. The principle of this velocity sensor is based on the measurement of the radial deflection of the charged particles which flow between the point and the two half-planes, this deflection being caused by the motion of the air particles resulting from the acoustic field. An electroacoustic model of this velocity sensor is proposed, based on the fluctuations of the current density distribution over the plane electrodes. An experimental setup is developed using a waveguide. It allows to compare simultaneously the acoustic velocity deduced from the corona discharge sensor on one side, and that resulting from the two-microphone meth od on the other side. This paper also proposes a parametric study to quantify the influence of the electrical and geometrical parameters of the discharge on this acoustic sensor.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [34 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-01797411
Contributeur : Philippe Herzog <>
Soumis le : mardi 22 mai 2018 - 15:25:22
Dernière modification le : jeudi 23 janvier 2020 - 18:22:04
Archivage à long terme le : : lundi 24 septembre 2018 - 18:24:24

Fichier

CDV_V_HAL.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Philippe Béquin, Vincent Joly, Philippe Herzog. Corona Discharge Velocimeter. Acta Acustica united with Acustica, Hirzel Verlag, 2018, 104 (3), pp.477 - 485. ⟨10.3813/AAA.919190⟩. ⟨hal-01797411⟩

Partager

Métriques

Consultations de la notice

184

Téléchargements de fichiers

512