Field synergy optimization and enhanced heat transfer by multi-longitudinal vortexes flow in tube

2005 ◽  
Vol 48 (16) ◽  
pp. 3331-3337 ◽  
Author(s):  
Ji-An Meng ◽  
Xin-Gang Liang ◽  
Zhi-Xin Li
Keyword(s):  
Heat Transfer ◽  
Field Synergy ◽  
Enhanced Heat Transfer

Numerical Analysis on Convection Heat Transfer in a Spirally Fluted and Field Synergy Principle Analysis

2011 ◽  
Vol 308-310 ◽  
pp. 1410-1415 ◽  
Author(s):  
Jiu Yang Yu ◽  
Wen Hao Yang ◽  
Yan Yang Wu ◽  
Wei Lin ◽  
Li Jun Liu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Motion ◽  
Convection Heat Transfer ◽  
Pulsating Flow ◽  
Field Synergy ◽  
Heat Transfer Mechanism ◽  
Enhanced Heat Transfer ◽  
Field Synergy Principle ◽  
Outlet Pressure ◽  
Numerical Result

By numerical simulation computation, after passing the pulsating flow, enhanced heat transfer mechanism in spirally fluted tubes was researched. Numerical result shows that pulsating flow can cause the outlet pressure to fluctuate cyclical and the extent of fluctuation increases with the pulsating flow frequency. The pulse flowing can make the fluid generate the whirlpool nearby the spirally fluted tubes and the phenomenon of periodic production, drift, and fall-off appears. Because of the vortex, the fluid motion and relative motion are enhanced. The pulse flowing can improve the coordination level between velocity and temperature, thus has strengthened the heat transfer effect.

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