Steady forced convection heat transfer from a heated circular cylinder to power-law fluids

Bharti, Ram P.; Chhabra, R.P.; Eswaran, V.

doi:10.1016/j.ijheatmasstransfer.2006.08.008

Cited by 145 publications

(90 citation statements)

References 49 publications

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“…For the zero magnetic field ( ) 0 β = case, good agreement of results can be seen wherein. However, we observe a consistent and slightly higher value for the drag coefficient obtained in the Bharti et al [28] 3.282…”

Section: Code Validationsupporting

confidence: 89%

“…Further the data for mean Nusselt number m N is also compared against other reported data [28] [58]- [72] and it is tabulated in Table 3. It is observed that out of the data shown in table, 71% of researchers have reported the value of mean Nusselt number close to our value of 3.29, whereas others have reported a higher value close to 3.48.…”

Section: Code Validationmentioning

confidence: 99%

See 1 more Smart Citation

Prediction of Better Flow Control Parameters in MHD Flows Using a High Accuracy Finite Difference Scheme

Rejeesh¹,

Udhayakumar²,

Sekhar³

et al. 2017

AJCM

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We have successfully attempted to solve the equations of full-MHD model within the framework of ψ ω − formulation with an objective to evaluate the performance of a new higher order scheme to predict better values of control parameters of the flow. In particular for MHD flows, magnetic field and electrical conductivity are the control parameters. In this work, the results from our efficient high order accurate scheme are compared with the results of second order method and significant discrepancies are noted in separation length, drag coefficient and mean Nusselt number. The governing Navier-Stokes equation is fully nonlinear due to its coupling with Maxwell's equations. The momentum equation has several highly nonlinear body-force terms due to full-MHD model in cylindrical polar system. Our high accuracy results predict that a relatively lower magnetic field is sufficient to achieve full suppression of boundary layer and this is a favorable result for practical applications. The present computational scheme predicts that a drag-coefficient minimum can be achieved when , it is found that the heat transfer rate is independent of electrical conductivity of the fluid. From the numerical values of physical quantities, we establish that the order of accuracy of the computed numerical results is fourth order accurate by using the method of divided differences.

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Section: Code Validationsupporting

confidence: 89%

Section: Code Validationmentioning

confidence: 99%

Prediction of Better Flow Control Parameters in MHD Flows Using a High Accuracy Finite Difference Scheme

Rejeesh¹,

Udhayakumar²,

Sekhar³

et al. 2017

AJCM

View full text Add to dashboard Cite

show abstract

“…This is due to the fact that addition of nanoparticles to the base-fluid decreases the nanofluid Prandtl number (as shown in Fig. 2 right) and entirely consistent with the earlier findings in the context of the forced convection of generalized Newtonian fluids from a heated cylinder [29]. Re bf for water-based nanofluids at φ = 2,5 % (left) and φ = 10 % (right).…”

Section: Mean Nusselt Numbersupporting

confidence: 88%

“…In addition to the aforementioned grid-dependency study, the present simulation results have also been compared against the available results of other authors [29,30] for the forced convection in Newtonian fluid from heated circular cylinder. The comparisons between the present numerical results (obtained with mesh MIII ) with the benchmark values (summarised in Table III) are extremely good and entirely consistent with our grid-dependency studies.…”

Section: Grid Refinement Numerical Accuracy and Validationmentioning

confidence: 99%

Laminar Forced Convection Heat Transfer Characteristics from a Heated Cylinder in Water Based Nanofluids

Ternik¹,

Rudolf²

2014

Int. j. simul. model.

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Forced convection heat transfer from a heated circular cylinder to incompressible water-based nanofluids in the steady cross-flow regime has been investigated numerically. The momentum and thermal energy differential equations have been solved by the standard finite volume method on the non-uniform Cartesian grid.The main objective of this study is to investigate the influence of the nanoparticles' volume fraction (0 % ≤ φ ≤ 10 %) on the heat transfer characteristics of water-based nanofluids over a wide range of base-fluid Reynolds number (1 ≤ Re bf ≤ 20).Accurate numerical results are presented in the form of the local and mean Nusselt number and the heat transfer enhancement. The results indicate clearly that the heat transfer characteristics are affected by the base-fluid Reynolds number, volume fraction and the thermo-physical properties of nanoparticles. Although those nanofluids reduce the mean Nusselt number values, they enhance the heat transfer rate.

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“…In Figure 8, the local radiative heat flux, convective heat flux, and local temperature on the kiln surface are shown. The convective heat flux distribution is almost the same on the front half of the kiln, as shown in Figures 5 and 8, however, for high Reynolds numbers (as considered in this study), it is higher for the isothermal condition than that for the isoflux condition in the rear half of the cylinder [40]. under an unsteady solution.…”

Section: Supporting Studymentioning

confidence: 53%

Numerical Study on Heat Transfer to an Arc Absorber Designed for a Waste Heat Recovery System around a Cement Kiln

2018

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A numerical study on combined free convection, forced convection, and radiation heat transfers from an industrial isothermal rotating cylinder (cement kiln) is carried out in this work. The investigation is done by the study of two-dimensional (2D) incompressible turbulent flow around the kiln under steady-and unsteady-state solutions. The results of this study show that the average Reynolds and Rayleigh numbers around the cylindrical kiln are 647,812.1 and 1.75986 × 10 11 , respectively. A heat absorber is specifically designed around the kiln, according to the available space around the kiln, in a sample cement factory. The study investigates the effect of an added absorber on the heat transfer features, for both constant heat flux and constant temperature, on the kiln. The temperature distribution along the absorber circumference is obtained for designing an efficient thermoelectric waste heat recovery system as a future study. It is observed that the contribution of the radiative heat transfer is significant in the total heat transferred from the kiln to the absorber.

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Steady forced convection heat transfer from a heated circular cylinder to power-law fluids

Cited by 145 publications

References 49 publications

Prediction of Better Flow Control Parameters in MHD Flows Using a High Accuracy Finite Difference Scheme

Prediction of Better Flow Control Parameters in MHD Flows Using a High Accuracy Finite Difference Scheme

Laminar Forced Convection Heat Transfer Characteristics from a Heated Cylinder in Water Based Nanofluids

Numerical Study on Heat Transfer to an Arc Absorber Designed for a Waste Heat Recovery System around a Cement Kiln

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