Large eddy simulation of turbulent heat transfer in an orthogonally rotating square duct with angled rib turbulators

Citation
A. Murata et S. Mochizuki, Large eddy simulation of turbulent heat transfer in an orthogonally rotating square duct with angled rib turbulators, J HEAT TRAN, 123(5), 2001, pp. 858-867
Citations number
35
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
ISSN journal
0022-1481 → ACNP
Volume
123
Issue
5
Year of publication
2001
Pages
858 - 867
Database
ISI
SICI code
0022-1481(200110)123:5<858:LESOTH>2.0.ZU;2-W
Abstract
Heat transfer in a rotating rib-roughened duct was simulated with a Lagrang ian dynamic subgrid-scale model The angled 60 deg rib induced a pair of str ong vortices in the stationary condition, and the heat transfer and the fri ction factor were larger them the 90 deg rib case. In the rotating conditio n, the high heat transfer areas at the midpoint between ribs and in front o f the rib were observed only on the trailing wall. The friction factor and overall Nusselt number were decreased by the duct rotation for 60 deg rib c ase, although they were increased for 90 deg rib case.