Steady non?Newtonian flow past a circular cylinder: a numerical study

Chhabra, R.P.; Soares, Armando; Ferreira, J.M.

doi:10.1007/s00707-004-0154-6

Cited by 87 publications

(85 citation statements)

References 19 publications

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“…The three creeping flow studies Tanner, 1993;Whitney and Rodin, 2001) are in excellent agreement with each other for n < 1, as far as the values of the total drag coefficients are concerned; the corresponding values of the limiting Reynolds number denoting the cessation of the creeping flow regime have been delineated recently (Sivakumar et al, 2006). Likewise, the two independent numerical studies in the two-dimensional steady flow regime for finite values of the Reynolds number (Re 40) (Bharti et al, 2005(Bharti et al, , 2007Chhabra et al, 2004;Soares et al, 2005) are also in good agreement with each other. For the sake of completeness, it is also appropriate to mention here that limited results for the steady flow of powerlaw fluids past confined and unconfined square (Dhiman et al, 2006b;Gupta et al, 2003;Paliwal et al, 2003) and rectangular (Nitin and Chhabra, 2005) cylinders are also available.…”

Section: Previous Workmentioning

confidence: 51%

Steady flow of power-law fluids across an unconfined elliptical cylinder

Sivakumar

Bharti

Chhabra

2007

Chemical Engineering Science

101

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Section: Previous Workmentioning

confidence: 51%

Steady flow of power-law fluids across an unconfined elliptical cylinder

Sivakumar

Bharti

Chhabra

2007

Chemical Engineering Science

101

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“…On the other hand, the analogous literature on the flow of power-law fluids past a cylinder is not only of recent vintage but is also much less extensive. 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.…”

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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-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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“…They found that the critical Reynolds number, wake length, separation angle and drag coefficient depend on the power-law index. Chhabra et al [32] extended that work by using a more accurate second-order finite difference method, more refined computational meshes, and greater blockage ratio and power-law index ranges in order to investigate the effect of blockage on drag coefficient, wake length, separation angle, and flow patterns over wide ranges of conditions. Agarwal et al [33] investigated numerically the momentum and thermal boundary layers for powerlaw fluids over a thin needle under wide ranges of kinematic and physical conditions.…”

Section: Literature Reviewmentioning

confidence: 99%

Fluid Flow and Heat Transfer in Power-Law Fluids Across Circular Cylinders: Analytical Study

Khan

Culham

Yovanovich

2006

Journal of Heat Transfer

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An integral approach of the boundary layer analysis is employed for the modeling of fluid flow around and heat transfer from infinite circular cylinders in power-law fluids. The Von Karman-Pohlhausen method is used to solve the momentum integral equation whereas the energy integral equation is solved for INTRODUCTIONMany practical situations need a knowledge of fluid flow around and heat transfer from horizontal cylinders subjected to crossflow of non-Newtonian fluids. These fluids are classified by different authors in different ways. One important classification is the purely viscous fluids (Cho [1]). These fluids are further subdivided in to shear thinning (or pseudoplastic, e. g. paints, glues, blood, and suspensions) and shear thickening (or dilatant, e. g. wet sand, sugar and borax solutions) fluids. In this study, fluid flow and heat transfer characteristics of these fluids across a circular cylinder are investigated using a power-law model. This model is based on the fact that both fluids exhibit a region of linear relationship between stress and strain rate when viewed on a log-log plot (Chhabra and Richardson [2]). This is why, pure viscous fluid are also called power-law fluids.

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Steady non?Newtonian flow past a circular cylinder: a numerical study

Cited by 87 publications

References 19 publications

Steady flow of power-law fluids across an unconfined elliptical cylinder

Steady flow of power-law fluids across an unconfined elliptical cylinder

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

Fluid Flow and Heat Transfer in Power-Law Fluids Across Circular Cylinders: Analytical Study

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