Flow reversal and heat transfer of fully developed mixed convection in vertical channels

Cheng, Chin‐Hsiang; Kou, Hong-Sen; Huang, Wen-Hsiung

doi:10.2514/3.190

Cited by 113 publications

(40 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was observed that increasing the Frank-Kamenetskii number reduces (Figure 3(a)), while reducing the temperature difference ratio increases the (Figure 3(b)). When = 0, we recovered the critical value which had been calculated by Aung and Worku [3], Cheng et al [4], El-Din [7], Barletta [12], and Chamkha et al [9]. We can not obtain the critical value of the ratio of Grashof number and Reynolds number ( ) with symmetrical wall temperatures = 0 when there is no chemical reaction in the fluid.…”

Section: Resultsmentioning

confidence: 73%

“…Then Habchi and Acharya [2] studied mixed convection in a vertical channel with asymmetric walls heating, where one plate is heated and the other is adiabatic. Fully developed flow was revisited by Aung and Worku [3] and Cheng et al [4]. They analyzed effects of various boundary conditions and different constant temperature parameters on buoyancy-aided flow.…”

Section: Introductionmentioning

confidence: 99%

“…Experiment on the appearance of flow reversal was conducted by Sparrow et al [6] for free convection in a one-sided heated vertical channel. Aung and Worku [3] and Cheng et al [4] studied analytically the occurrence flow reversal for the mixed convection. Criteria for the onset of flow reversal in terms of the Grashof to Reynolds number ratio were developed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Flow Reversal of Fully Developed Mixed Convection in a Vertical Channel with Chemical Reaction

Saleh

Hashim

Basriati

2013

International Journal of Chemical Engineering

View full text Add to dashboard Cite

The present analysis is concerned with the criteria for the onset of flow reversal of the fully developed mixed convection in a vertical channel under the effect of the chemical reaction. The governing equations and the critical values of the buoyancy force are solved and calculated numerically via MAPLE. Parameter zones for the occurrence of reversed flow are presented. The exothermic chemical reaction is found to enhance the flow reversal and made flow reversal possible for symmetrical walls temperature.

show abstract

Section: Resultsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flow Reversal of Fully Developed Mixed Convection in a Vertical Channel with Chemical Reaction

Saleh

Hashim

Basriati

2013

International Journal of Chemical Engineering

View full text Add to dashboard Cite

show abstract

“…Since these early studies, many numerical works dealing with the buoyancy effect on the flow structure and heat transfer have been performed (see for example [13][14][15][16]) while a limited number of experiments have been carried out.…”

Section: Flow Reversalsmentioning

confidence: 99%

Effect of surface radiation on natural convective flows and onset of flow reversal in asymmetrically heated vertical channels

Bousetta

Chénier

et al. 2013

International Journal of Thermal Sciences

View full text Add to dashboard Cite

To cite this version:R. Li, M. Bousetta, Eric Chénier, Guy Lauriat. Effect of surface radiation on natural convective flows and onset of flow reversal in asymmetrically heated vertical channels. International Journal of Thermal Sciences, Elsevier, 2013, 65 (-), pp.9-27. <10.1016/j.ijthermalsci.2012.10.023>. Effect of surface radiation on natural convective flows and onset of flow reversal in asymmetrically heated vertical channels AbstractNumerical solutions on the influence of surface radiation on the laminar air flow induced by natural convection in vertical, asymmetrically-heated channels are discussed. Variable property effects are accounted for in a full-elliptic mathematical formulation. The density variation is determined from the state equation for ideal gas. The experimental design and data reported in Webb and Hill [1] are taken as the base cases for carrying out the computations. The occurrence of flow reversals is first considered and revisited for pure natural convection, and the Nusselt number correlations derived from the numerical results are favorably compared with those reported in [1]. It is shown that the general effect of surface radiation is to delete the onset of pocketlike recirculations at the top part of the channel, to reduce the heated wall temperatures, and to increase the facing wall temperatures. Comparisons with usual methods used for decoupling the surface radiation effects are discussed. In the range of parameters investigated, increases in differences between inlet and maximum wall temperatures up to 200 K are shown to have small influences on the flow field and negligible effects on heat transfer performances.Keywords: Natural convection, surface radiation, vertical channels, flow reversal, variable property effects, numerical simulations order of consistency of the numerical scheme β thermal coefficient of volumetric expansion,

show abstract

“…Berardi et al [8] studied viscous dissipation in duct flow of molten polymers. Flow reversal and heat transfer of fully developed mixed convection in vertical channels was studied by Cheng et al [9]. Hamadah and Wirtz [10] made an analysis of laminar fully developed mixed convection in a vertical channel with opposing buoyancy.…”

Section: Introductionmentioning

confidence: 99%

Viscous Dissipation and Buoyancy Effects on Laminar Convection in a Vertical Channel with Transpiration

Sesan

Moses

Onwubuoya

et al. 2013

International Journal of Applied Mathematical Research

View full text Add to dashboard Cite

The viscous dissipation and buoyancy effects on laminar convection with transpiration are investigated. Uniform and asymmetric temperatures are prescribed at the channel walls. The velocity field is considered as parallel. A perturbation method is employed to solve the momentum balance equation and the energy balance equation. A comparison with the velocity and temperature profiles in the case of laminar forced convection with various dissipation is performed in order to point out the effect of buoyancy. The case of convective boundary condition is also discussed.

show abstract

Flow reversal and heat transfer of fully developed mixed convection in vertical channels

Cited by 113 publications

References 9 publications

Flow Reversal of Fully Developed Mixed Convection in a Vertical Channel with Chemical Reaction

Flow Reversal of Fully Developed Mixed Convection in a Vertical Channel with Chemical Reaction

Effect of surface radiation on natural convective flows and onset of flow reversal in asymmetrically heated vertical channels

Viscous Dissipation and Buoyancy Effects on Laminar Convection in a Vertical Channel with Transpiration

Contact Info

Product

Resources

About