EFFECTS OF FREE-STREAM TURBULENCE INTENSITY ON HEAT AND MASS TRANSFERS AT THE SURFACE OF A CIRCULAR-CYLINDER AND AN ELLIPTIC CYLINDER, AXISRATIO 4

Authors
KONDJOYAN A DAUDIN JD
Citation
A. Kondjoyan et Jd. Daudin, EFFECTS OF FREE-STREAM TURBULENCE INTENSITY ON HEAT AND MASS TRANSFERS AT THE SURFACE OF A CIRCULAR-CYLINDER AND AN ELLIPTIC CYLINDER, AXISRATIO 4, International journal of heat and mass transfer, 38(10), 1995, pp. 1735-1749
Citations number
24
Categorie Soggetti
Mechanics,"Engineering, Mechanical",Thermodynamics
Journal title
International journal of heat and mass transfer → ACNP
ISSN journal
00179310
Volume
38
Issue
10
Year of publication
1995
Pages
1735 - 1749
Database
ISI
SICI code
0017-9310(1995)38:10<1735:EOFTIO>2.0.ZU;2-6
Abstract
Effect of free stream turbulence intensity ranging from 1.5 to 40% and of air velocity ranging from 0.5 to 5.0 m s(-1) on transfer coefficie nts has been measured for a circular cylinder (d = 0.1 m) and an ellip tical cylinder (a = 0.2 m, R = 4) in cross-flow. The effect of turbule nce intensity appeared to be as important as the influence of velocity and seemed to be independent of the pressure gradient and of the degr ee of turbulence isotropy. One relation for each of the two cylinders has been established to describe all the experimental data. It appeare d also that the transfers are much less affected by the axis ratio of the cylinder than by the air flow properties.