Abstract
This paper presents a numerical investigation of fully developed laminar convective heat transfer in a helicoidal pipe with a finite pitch coiled pipe. Three major parameters are identified to affect laminar convective heat transfer in a helicoidal pipe: the Dean number, torsion and the Prandtl number. The results indicate that torsion will increase the temperature gradient on one side of the pipe wall and decrease the temperature gradient on the other side. In the case of a small Prandtl number fluid, the Nusselt number declines slightly as torsion increases. However, in the case of a large Prandtl number fluid, the Nusselt number is significantly reduced as torsion increases. The predicted results for the limiting cases are also compared with other numerical and experimental results.
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