Titre :
|
LDA measurements in plane turbulent jets
|
Auteurs :
|
B. Ramaprian ;
M. Chandrasekhara
|
Type de document :
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article/chapitre/communication
|
Année de publication :
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1985
|
Format :
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264-271
|
Langues:
|
= Anglais
|
Catégories :
|
THERMIQUE THERMODYNAMIQUE
|
Mots-clés:
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JET
;
ECOULEMENT TURBULENT
;
VITESSE D'ECOULEMENT
;
MESURE
;
ANEMOMETRE
|
Résumé :
|
Measurements on the mean and most of the significant turbulent properties of plane isothermal and heated jets are reported. The velocity measurements were made using two-component, frequency-shifted Laser Doppler Anemometry (LDA) and the temperature measurements were made using fast response resistance thermometry. A simple but effective technique was developed for obtaining accurate velocity measurements from the LDA in a nonisothermal environment. These measurements, some of which are the first of their kind, provide an independant data base with which to compare existing hot-wire data on jets. The LDA measurements indicate lower turbulence intensities and lower turbulent fluxes compared to the hot-wire data.
|
Source :
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Journal of fluids engineering, vol.107
|