The experimental friction factor and Nusselt number data for laminar flow of viscous oil through a circular duct having integral transverse rib roughness and fitted with twisted tapes with oblique teeth have been presented. Predictive friction factor and Nusselt number correlations have also been presented. The thermohydraulic performance has been evaluated. The major findings of this experimental investigation are that the twisted tapes with oblique teeth in combination with integral transverse rib roughness perform significantly better than the individual enhancement technique acting alone for laminar flow through a circular duct up to a certain value of fin parameter.
Laminar Flow Through a Circular Tube Having Transverse Ribs and Twisted Tapes
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received March 23, 2014; final manuscript received May 23, 2015; published online June 30, 2015. Assoc. Editor: Arun Muley.
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Tiwari, M., and Saha, S. K. (December 1, 2015). "Laminar Flow Through a Circular Tube Having Transverse Ribs and Twisted Tapes." ASME. J. Thermal Sci. Eng. Appl. December 2015; 7(4): 041009. https://doi.org/10.1115/1.4030792
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