Résumé
Experimental results are presented for heat transfer cooling of an electrically heated circular cylinder, of diameter D= 10 mm, by a slot jet, of height S= 2.5 mm, i.e. with D/S= 4. Mean and local Nusselt numbers are presented versus the Reynolds numbers, the distance of the cylinder from the slot exit, H, and the angle from the impinging point. Comparisons have been done among the mean Nusselt numbers of this work and previous experimental results of the same authors, carried out with diameter to slot height ratios equal to D/S=1 and 2. The conclusion is that the mean Nusselt number, defined as NumD= hmD/k, is higher for D/S= 4, versus the Reynolds number, defined as ReD= WD/v. On the contrary, the mean Nusselt number, defined on the basis of the slot height, NumS= hmS/k, has similar values, for the different slot heights, versus the Reynolds number, defined as ReS= WS/v, with the trend of higher results for the slot with D/S= 2.
Détails
- Titre original : Optimal slot height in the jet cooling of a circular cylinder.
- Identifiant de la fiche : 2003-2175
- Langues : Anglais
- Source : Applied Thermal Engineering - vol. 23 - n. 7
- Date d'édition : 05/2003
Liens
Voir d'autres articles du même numéro (2)
Voir la source
Indexation
- Thèmes : Transfert de masse
- Mots-clés : Jet; Coefficient de transfert de chaleur; Mesure; Reynolds; Air; Nusselt
-
Heat transfer and pressure distribution of an i...
- Auteurs : TAWFEK A. A.
- Date : 29/05/1996
- Langues : Anglais
- Source : Proceedings of the 2nd European Thermal-Sciences (EUROTHERM) and 14th UIT National Heat Transfer Conference 1996.
Voir la fiche
-
Study of heat transfer for a pair of rectangula...
- Auteurs : ROY S., PATEL P.
- Date : 01/2003
- Langues : Anglais
- Source : International Journal of Heat and Mass Transfer - vol. 46 - n. 3
Voir la fiche
-
Turbulent heat transfer from a convex hemispher...
- Auteurs : LEE D. H., CHUNG Y. S., KIM M. G.
- Date : 03/1999
- Langues : Anglais
- Source : International Journal of Heat and Mass Transfer - vol. 42 - n. 6
Voir la fiche
-
Transferts de chaleur et de quantité de mouveme...
- Auteurs : NIZOU P. Y., TIDA T.
- Date : 05/1995
- Langues : Français
- Source : International Journal of Heat and Mass Transfer - vol. 38 - n. 7
Voir la fiche
-
Effect of jet-jet spacing on convective heat tr...
- Auteurs : HUBER A. M., VISKANTA R.
- Date : 12/1994
- Langues : Anglais
- Source : International Journal of Heat and Mass Transfer - vol. 37 - n. 18
Voir la fiche