Numerical Analysis on Convection Heat Transfer of Pulsating Flow in a Spiral Fluted Tube

JiuYang Yu; Wen Hao Yang; Wei Lin; Li Jun Liu; Qian Liu; Si Hao Nie; Yi Wen Chen; Jing Zhu

doi:10.4028/www.scientific.net/AMR.516-517.941

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Numerical Analysis on Convection Heat Transfer of Pulsating Flow in a Spiral Fluted Tube

Abstract:

The mechanism of heat transfer enhancement of pulsating flow in a spiral fluted tube was researched by CFD (computational fluid dynamics) software FLUENT. Numerical results showed that pulsating flow leads to cyclical fluctuation of outlet pressure and the extent of fluctuation increases with increasing the pulsating flow frequency. Moreover, the pulsating flowing causes whirlpools near the spiral flute and the vortices generate, drift, and fall off periodically. The optimum pulsating frequency in the spiral fluted tube is 6HZ and the optimum amplitude A is equal to 0.7 approximately when the Reynolds number is 1683.

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Periodical:

Advanced Materials Research (Volumes 516-517)

Pages:

941-944

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.516-517.941

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Online since:

May 2012

Authors:

JiuYang Yu, Wen Hao Yang, Wei Lin, Li Jun Liu, Qian Liu, Si Hao Nie, Yi Wen Chen, Jing Zhu

Keywords:

Heat Transfer Enhancement, Pulsating Flow, Spiral Fluted Tube

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