ISSN Online: 2377-424X
ISBN Print: 0-89116-299-2
International Heat Transfer Conference 7
ACOUSTIC ENHANCEMENT OF HEAT TRANSFER IN PLANE CHANNELS
Abstract
The paper describes results of an experimental investigation of the influence of two-dimensional acoustically excited pulsating duct flow on the rate of heat-transfer from the duct wall. The heated wall which is a 20×40 cm aluminium plate is embedded in the bottom of the channel.
There are two kinds of flows through the channel:
A. Reciprocating parallel flow.
B. Stationary and rolling 2-D vortex sheet.
The results show that the acoustically excited flow increases the overall heat-transfer coefficient. Two parameters affect the cooling: the frequency of the disturbances and the channel height. The results include plate temperature measurements as well as some hot-wire measurements.
There are two kinds of flows through the channel:
A. Reciprocating parallel flow.
B. Stationary and rolling 2-D vortex sheet.
The results show that the acoustically excited flow increases the overall heat-transfer coefficient. Two parameters affect the cooling: the frequency of the disturbances and the channel height. The results include plate temperature measurements as well as some hot-wire measurements.