CUED Publications database

Rib shape effects on heat transfer performance in internal cooling passages

Dai, Y and Tyacke, JC and Tucker, PG (2018) Rib shape effects on heat transfer performance in internal cooling passages. In: UNSPECIFIED pp. 11-14..

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Numerical studies of the flow field and heat transfer in a fully developed ribbed channel have been performed using Large Eddy Simulation (LES). Ten different rib shapes are investigated aiming to improve the heat transfer performance. The triangular rib with increasing height in the flow direction, with the largest recirculation bubble, was found to provide the best heat transfer performance, giving approximately 5% greater heat transfer than the basic square profile. Ribs with larger recirculating zones tend to provide better heat transfer performances. The rounded-corners with the shortest recirculation zones deteriorated the heat transfer performance. Thus when adding round edges to the triangular_up ribs to fit the manufacturing conditions, the heat transfer performance can be reduced by around 12%. An immersed boundary method (IBM) has been implemented for use with LES to solve the challenge of varying complex rigid geometries.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div A > Fluid Mechanics
Div A > Turbomachinery
Depositing User: Cron Job
Date Deposited: 27 Feb 2019 20:25
Last Modified: 13 Apr 2021 08:27