Cylinder Cross-Flow Heat Transfer in Drag-Reducing Fluid

Hoyt, JW; Sellin, R. H. J.

doi:10.1080/08916158908946358

Cited by 9 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 Re * lf is the critical Reynolds number marking the sudden decrease of the formation length. According to Hoyt and Sellin [5] another early work on drag in non-Newtonian cylinder flows was that of McClanahan and Ridgely (1968). They found a drag increase for 10 4 < Re < 4 × 10 4 at low polymer concentrations and drag reduction at higher polymer concentrations.…”

Section: Introductionmentioning

confidence: 99%

Vortex shedding in cylinder flow of shear-thinning fluids. III

Coelho

Pinho

2004

Journal of Non-Newtonian Fluid Mechanics

View full text Add to dashboard Cite

Measurements of pressure on the cylinder surface for the flow of Newtonian and non-Newtonian fluids around a circular cylinder were carried out, from which several parameters were calculated: the form drag coefficient (C D ), the pressure rise coefficient (C pb − C pm ) and the wake angle (θ w ). The non-Newtonian fluids were aqueous solutions of CMC and tylose with varying degrees of shear-thinning and elasticity, at weight concentrations of 0.1-0.6% and the experiments encompassed the transition and shear-layer transition regimes. For low Reynolds numbers flows elasticity on the shear layers was responsible for an increase in drag reduction with polymer concentration. Within the shear-layer transition regime the increase of the wake angle and pressure rise coefficient for the more concentrated solutions reduced C D by narrowing the near wake. For the tylose solutions a good correlation was found between the elasticity number and the mean pressure rise coefficient.

show abstract

Section: Introductionmentioning

confidence: 99%

Vortex shedding in cylinder flow of shear-thinning fluids. III

Coelho

Pinho

2004

Journal of Non-Newtonian Fluid Mechanics

View full text Add to dashboard Cite

show abstract

“…Aside from these studies, some effort has also been directed at studying the momentum and thermal boundary-layer flows of power-law fluids over a circular cylinder, and these have been reviewed elsewhere . Similarly, there have been a few experimental studies dealing with the forced convection heat transfer from a circular cylinder to streaming non-Newtonian fluids, − but most of these relate either to very high values of Reynolds number and/or to the flow of viscoelastic or drag-reducing polymer solutions . Admittedly, these studies are not of direct interest here, but these are mentioned here for the sake of completeness.…”

Section: Introductionmentioning

confidence: 99%

Flow and Forced Convection Heat Transfer in Crossflow of Non-Newtonian Fluids over a Circular Cylinder

Soares

Ferreira

Chhabra

2005

Ind. Eng. Chem. Res.

152

View full text Add to dashboard Cite

The steady and incompressible flow of power-law type non-Newtonian fluids across an unconfined, heated circular cylinder is investigated numerically to determine the dependence of the individual drag components and of the heat transfer characteristics on power-law index (0.5 e n e 1.4), Prandtl number (1 e Pr e 100), and Reynolds number (5 e Re e 40). The momentum and energy equations are expressed in the stream function/vorticity formulation and are solved using a second-order accurate finite difference method to determine the pressure drag and frictional drag as well as the local and surface-averaged Nusselt numbers and to map the temperature field near the cylinder. The accuracy of the numerical procedure is established using previously available numerical and analytical results for momentum and heat transfer in Newtonian and power-law fluids. The results reported herein provide fundamental knowledge of the flow and heat transfer behavior for the flow of non-Newtonian fluids over a circular cylinder; these results further show that the effect of the power-law index on such behavior is strongly conditioned by the kinematic conditions and less so by the type of thermal boundary condition prescribed at the cylinder surface.

show abstract

Fluid Flow and Heat Transfer from Circular and Noncircular Cylinders Submerged in Non-Newtonian Liquids

Chhabra

2011

Advances in Heat Transfer Volume 43

View full text Add to dashboard Cite

Cylinder Cross-Flow Heat Transfer in Drag-Reducing Fluid

Cited by 9 publications

References 20 publications

Vortex shedding in cylinder flow of shear-thinning fluids. III

Vortex shedding in cylinder flow of shear-thinning fluids. III

Flow and Forced Convection Heat Transfer in Crossflow of Non-Newtonian Fluids over a Circular Cylinder

Fluid Flow and Heat Transfer from Circular and Noncircular Cylinders Submerged in Non-Newtonian Liquids

Contact Info

Product

Resources

About