Effect of temperature-dependent viscosity on forced convection heat transfer from a cylinder in crossflow of power-law fluids

Soares, Armando; Ferreira, J.M.; Caramelo, Liliana; Anacleto, Joaquim; Chhabra, R.P.

doi:10.1016/j.ijheatmasstransfer.2010.06.019

Cited by 30 publications

(13 citation statements)

References 36 publications

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“…Some numerical results are now available on hydrodynamics (D'Allessio and Pascal, 1996;Whitney and Rodin, 2001;Chhabra et al, 2004;, forced convection heat transfer (Soares et al, 2005;, and mixed convection heat transfer (Srinivas et al, 2009;Soares et al, 2009;Bouaziz et al, 2010). However, most of these studies are restricted to the steady flow regime (Sivakumar et al, 2006), very few studies deal with the flow of power-law fluids past a cylinder (Patnana et al, 2009), and heat transfer (Patnana et al, 2010;Soares et al, 2010), in the laminar vortex shedding regime. These studies (Patnana et al, 2009(Patnana et al, , 2010Soares et al, 2010), signify that all else being equal, shear-thinning behavior enhances the hydrodynamic drag.…”

Section: Previous Workmentioning

confidence: 99%

“…However, most of these studies are restricted to the steady flow regime (Sivakumar et al, 2006), very few studies deal with the flow of power-law fluids past a cylinder (Patnana et al, 2009), and heat transfer (Patnana et al, 2010;Soares et al, 2010), in the laminar vortex shedding regime. These studies (Patnana et al, 2009(Patnana et al, , 2010Soares et al, 2010), signify that all else being equal, shear-thinning behavior enhances the hydrodynamic drag. The effect on drag is particularly striking at low Reynolds number.…”

Section: Previous Workmentioning

confidence: 99%

See 1 more Smart Citation

Two-dimensional Flow of Power-law Fluids over a Pair of Cylinders in a Side-by-Side Arrangement in the Laminar Regime

Panda

2017

Braz. J. Chem. Eng.

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-This manuscript presents the effect of Reynolds number (Re) and proximity of the bodies on the hydrodynamics of flow of shear-thinning, Newtonian and shear-thickening fluids over a pair of cylinders kept in side-by-side arrangement. Results obtained from the numerical simulations carried out with a combination of different parameters in the range of 0.2 ≤ power law index (n) ≤ 1.8, 0.1 ≤ Re ≤ 100 and 1.2 ≤ G (gap between the cylinders/diameter) ≤ 4 have been discussed in details. Analysis of the results gives a clear insight into the complex influence of Re on streamline patterns, surface pressure profiles, drag and lift coefficients for various fluids when the gap between two cylinder is changed.

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Section: Previous Workmentioning

confidence: 99%

Section: Previous Workmentioning

confidence: 99%

Two-dimensional Flow of Power-law Fluids over a Pair of Cylinders in a Side-by-Side Arrangement in the Laminar Regime

Panda

2017

Braz. J. Chem. Eng.

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“…However, the present analysis also assumes the thermo-physical properties to be independent of temperature thereby limiting their applicability to situations where DT is small. The role of temperature-dependent viscosity on Nusselt number for a circular cylinder immersed in power-law fluids has been delineated in a recent study [39].…”

Section: Heat Transfer Characteristicsmentioning

confidence: 99%

Momentum and heat transfer from a square cylinder in power-law fluids

Rao

Sahu

Chhabra

2011

International Journal of Heat and Mass Transfer

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“…is known as the Pearson number (Richardson, 1987) or as the temperature-thinning index (Soares, Ferreira, Caramelo, Anacleto, & Chhabra, 2010) by analogy to the shear-thinning index (n < 1) because it has a viscosity-reducing effect. This number appears in the nondimensional Eqs.…”

Section: Reynolds Numbermentioning

confidence: 99%