Simulation of Laminar Buoyancy-Driven Flows in an Enclosure

Evren-Selamet, E.; Arpacı, Vedat S.; Borgnakke, Claus

doi:10.1080/10407789208944775

Cited by 35 publications

(24 citation statements)

References 17 publications

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“…The governing equations with primitive variables are solved on a staggered grid by applying the Godunov scheme to convective terms and centered finite difference to diffusive terms. Details of the method are explained in an earlier work of the lead author [26].…”

Section: = (T -T C )/(T H -T C )mentioning

confidence: 99%

“…[26,27], an additional attempt is made here by considering studies that more closely represent the present enclosure. The results from the present predictions are compared qualitatively with those from the earlier works of [25] and [28] which studied numerically 3D natural convection in a cubical enclosure with a single fin placed at the bottom (hot) surface.…”

Section: Validation For An Enclosure With Single Finmentioning

confidence: 99%

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Effect of Fin Orientation and Length on the Rayleigh-Benard Convection

Selamet¹,

Selamet²,

Dehner³

2017

JEPE

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Natural convection driven by the temperature difference of horizontal top and bottom surfaces of an enclosure containing air, Pr = 0.7, and fins of different arrangements at different lengths is studied numerically for Ra = 10 5 and 5 × 10 5 . Evolution of heat transfer rates (Nusselt number) is illustrated along with various, steady or unsteady, cellular flow structures and temperature patterns. The effect of fin length and placement on flow regime and heat transfer is established. Different fin orientations at the walls are observed to introduce considerable unsteadiness in some cases, requiring close investigation in order to design systems for specific purposes.

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Section: = (T -T C )/(T H -T C )mentioning

confidence: 99%

Section: Validation For An Enclosure With Single Finmentioning

confidence: 99%

Effect of Fin Orientation and Length on the Rayleigh-Benard Convection

Selamet¹,

Selamet²,

Dehner³

2017

JEPE

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Section: Problem Definitionmentioning

confidence: 99%

Effect of Fins on the Transition to Oscillating Laminar Natural Convection in an Enclosure

Selamet

2016

MATEC Web Conf.

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Abstract. Flow characteristics and evolution of heat transfer are investigated numerically within a differentially heated square cavity in the presence of thin fins which are either insulated or highly conductive and at the base wall temperature. The transition from steady-state to oscillatory and chaotic convection is observed at certain Rayleigh numbers with varying lengths of fins positioned at different locations.

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“…Selecting a Δx smaller than Δy helps better resolve the boundary layer. For further details of the method applied in the present study, the reader is referred to Evren-Selamet [8], [14]. The same study has also discussed the validation of the algorithm developed for buoyancy-driven flows by comparing the results for a square cavity with the earlier study of de Vahl Davis [3], which serves as a benchmark on natural convection investigations.…”

Section: The Numerical Solution Proceduresmentioning

confidence: 99%

Prediction of Buoyancy-Driven Flow in a Slot with Different Biot Numbers

Selamet¹,

Selamet²

2014

IJMMM

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Abstract-The projection method involving a Godunov type discretization for convective terms is applied to natural convection in water within a vertical slot. The variation of Nusselt number is examined for a range of Rayleigh numbers by imposing elevated temperature on the left wall and allowing convective heat transfer on the right. The results illustrate that heat transfer increases asymptotically with increasing Biot number. The rate of increase is a function of Rayleigh number and becomes more significant at higher Rayleigh numbers, as expected.

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Simulation of Laminar Buoyancy-Driven Flows in an Enclosure

Cited by 35 publications

References 17 publications

Effect of Fin Orientation and Length on the Rayleigh-Benard Convection

Effect of Fin Orientation and Length on the Rayleigh-Benard Convection

Effect of Fins on the Transition to Oscillating Laminar Natural Convection in an Enclosure

Prediction of Buoyancy-Driven Flow in a Slot with Different Biot Numbers

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