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Numerical study of convective heat transfer from periodic open cavities in a channel with oscillatory throughflow

✍ Scribed by Toru Fusegi

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
777 KB
Volume
18
Category
Article
ISSN
0142-727X

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✦ Synopsis

A numerical study is performed on the fully developed forced-convection heat transfer in a grooved channel with a heated lower plate. Periodic flows are forced through the channel. The time-periodic variations of externally sustained pressure gradients imposed upon the throughflow have significant bearing on the interaction between the throughflow in the channel and the recirculatory flow inside the cavity. Aided by this interaction, convective heat transfer is pronounced for Re >_ 102, where Re is the oscillatory flow Reynolds number. As the Womersley n'umber increases, the communication between the heated fluid inside the cavity and the thi'oughflow is promoted, leading to heat transfer enhancement.

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