[article] 
in COST > N° 18 [01/01/2017] . - p. 41

Titre :	Numerical study of heat transfer and fluid flow in a channel with staggered arc-shaped baffles
Type de document :	texte imprimé
Auteurs :	Younes Menni, Auteur ; Ahmed Azzi, Auteur ; Chafika Zidani, Auteur
Année de publication :	2017
Article en page(s) :	p. 41
Langues :	Anglais
Mots-clés :	Arc-shaped baffle  CFD  heat transfer  rectangular channel
Résumé :	A numerical study has been carried out to examine steady turbulent flow and heat transfer characteristics in a two-dimensional isothermal wall rectangular channel with staggered 30° arc-shaped baffles. The air flow rate is in terms of Reynolds numbers based on the inlet hydraulic diameter of the test channel ranging from 4,000 to 16,000. The CFD software FLUENT6.3 was used to simulate the flow and heat transfer. The simulations focused on the influence of Reynolds number and arc-baffle height on heat transfer and pressure drop measurements. The results reveal essentially, that the airflow is characterized by strong deformations and large recirculation regions. In general, the rise in the Reynolds number results in the increase in the Nusselt number and friction factor values. Also, for a constant value of the Reynolds number, an increase in the arc-baffle height causes a substantial increase in the Nusselt number but the friction loss is also verysignificant.

[article] Numerical study of heat transfer and fluid flow in a channel with staggered arc-shaped baffles [texte imprimé] / Younes Menni, Auteur ; Ahmed Azzi, Auteur ; Chafika Zidani, Auteur . - 2017 . - p. 41.
Langues : Anglais
in COST > N° 18 [01/01/2017] . - p. 41

Mots-clés :

Arc-shaped baffle  CFD  heat transfer  rectangular channel

Résumé :

A numerical study has been carried out to examine steady turbulent flow and heat transfer characteristics in a two-dimensional isothermal wall rectangular channel with staggered 30° arc-shaped baffles. The air flow rate is in terms of Reynolds numbers based on the inlet hydraulic diameter of the test channel ranging from 4,000 to 16,000. The CFD software FLUENT6.3 was used to simulate the flow and heat transfer. The simulations focused on the influence of Reynolds number and arc-baffle height on heat transfer and pressure drop measurements. The results reveal essentially, that the airflow is characterized by strong deformations and large recirculation regions. In general, the rise in the Reynolds number results in the increase in the Nusselt number and friction factor values. Also, for a constant value of the Reynolds number, an increase in the arc-baffle height causes a substantial increase in the Nusselt number but the friction loss is also verysignificant.