Numerical Study on the Heat Transfer Characteristic in Periodical Variable Cross-Section Channel
The heat transfer characteristic through periodical variable cross-section passage is studied with numerical scheme. The results in multi-period variable cross-section channel show that the heat transfer enhancement can be obtained by forming flow destabilization at large Reynolds number. The parameters include pressure, velocity, temperature in the channel are symmetric about central line at low Reynolds number, then change to asymmetric at high Reynolds number. The variations occur firstly at the downstream near outlet of the channel and move upstream, which could improve the fluid mixing to increase the enhancement of heat transfer in channel.
Chaohe Chen, Yong Huang and Guangfan Li
L. Li and X. Z. Du, "Numerical Study on the Heat Transfer Characteristic in Periodical Variable Cross-Section Channel", Advanced Materials Research, Vols. 243-249, pp. 4935-4938, 2011