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Friction and heat transfer characteristics of laminar swirl flow through a circular tube fitted with regularly spaced twisted-tape elements.

Author(s) : SAHA S. K., DUTTA A., DHAL S. K.

Type of article: Article

Summary

Laminar swirl flow of a viscous fluid having intermediate Prandtl number range was considered. The swirl was generated by regularly spaced twisted-tape elements with single twist in the tape module and connected by thin circular rods. The tape-width and the rod diameter were both varied. The effect of higher-than-zero phase angle between consecutive tape elements has been studied. Reynolds number, Prandtl number, twist ratio, space ratio, tape-width, rod-diameter and phase angle govern the characteristics.

Details

Original title: Friction and heat transfer characteristics of laminar swirl flow through a circular tube fitted with regularly spaced twisted-tape elements.
Record ID : 2002-1773
Languages: English
Source: International Journal of Heat and Mass Transfer - vol. 44 - n. 22
Publication date: 2001/11

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Indexing

Themes: Mass transfer
Keywords: Heat transfer coefficient; Geometry; Mass transfer; Turbulator; Heat transfer; Bare pipe; Optimization; Nusselt; Prandtl; Pressure drop