Natural convection heat transfer from inclined isothermal plates

Al-Arabi, M.; Sakr, B. El-Din

doi:10.1016/0017-9310(88)90037-3

Cited by 37 publications

(19 citation statements)

References 7 publications

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“…While the result of Hassan and Mohamed [1970] clearly under-predicted the critical Grashof number compared to Lloyd and Sparrow [1970]. AL-Arabi and Sakr [1988] reported the results at the start and end of transition (filled circle and square respectively), and our results show good agreement with the former data while under-predict against the latter data.…”

Section: Evaluation Of the Transition Stagesupporting

confidence: 76%

Transition of free convection flow inside an inclined parallel walled channel: Effects of inclination angle and width of the channel

Alzwayi

Paul

2014

International Journal of Heat and Mass Transfer

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Section: Evaluation Of the Transition Stagesupporting

confidence: 76%

Transition of free convection flow inside an inclined parallel walled channel: Effects of inclination angle and width of the channel

Alzwayi

Paul

2014

International Journal of Heat and Mass Transfer

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“…The same results as above have also been reported by Fujii and Imura [6] and Black and Norris [7]. On the other hand, Lloyd and colleagues [5], who measured the mass transfer coefficients using the electrolytic solution, and Al-Arabi and Sakr [10], who measured the heat transfer coefficients from the condensate of the steam, have reported that the coefficients decrease with the inclination angles. As is obvious from the above discussion, the heat transfer, in particular, of the turbulent flows has not been clarified yet.…”

Section: Introductionsupporting

confidence: 74%

“…One encompasses the problems concerned with the turbulent transition mechanisms, which have been dealt in the experiments [1,4,8,9]. The other encompasses the problems concerned with the heat transfer characteristics which have been dealt in the experiments [2,3,[5][6][7]10]. We will discuss these two groups of problems first by reviewing the previous results, and then mention the problems that remained unsolved.…”

Section: Introductionmentioning

confidence: 95%

Fluid flow and heat transfer of natural convection adjacent to upward‐facing inclined heated plates

Kimura

Kitamura

Yamaguchi

et al. 2003

Heat Trans. Asian Res.

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Turbulent transition mechanism and local heat transfer characteristics of the natural convective flows over upward-facing inclined plates were investigated experimentally. The experiments were performed in the range of modified local Rayleigh numbers from 10 4 to 8 × 10 14 and of inclination angles θ from 0 to 90°. The flow fields over the plate and the surface temperatures of the plate were visualized with dye and liquid crystal thermometry. The results showed that longitudinal vortices play a main role in the turbulent transition over the plate of θ < 72°. These vortices appear first in the laminar boundary layer, then detach from the plate and, finally become distorted. It is found that the heat transfer is enhanced markedly by the detachment and the distortion of these vortices. The local heat transfer coefficients were measured in the laminar, transitional, and turbulent regions. The results show that the coefficients in the turbulent region become identical and independent of inclination angles.

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“…Although we can cite a number of experimental and analytical studies, most studies dealt with the flows over plates of high inclination angles and few studies are concerned with small inclination angles of less than 15°. The latter studies include the experiments by Hassan and Mohamed [5], Black and Norris [6], and Al-Arabi and Sakr [7], who conducted heat transfer measurements from isothermally heated plates to air. In those experiments, the inclination angles varied from 0 to 90°.…”

Section: (A)mentioning

confidence: 98%

Fluid flow and heat transfer of natural convection at a slightly inclined, upward‐facing, heated plate

Kimura

Yoshioka

Kitamura

et al. 2002

Heat Trans. Asian Res.

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Natural convective flows over upward-facing, inclined plates were investigated experimentally, with an emphasis on the role of opposing flows that appear over the plates inclined slightly from the horizontal line. The flow fields over the plates and the surface temperatures of the heated plates were visualized with both dye and a liquid-crystal thermometry. The results showed that both the descending and ascending flows appeared over the plates when the inclination angles of the plates were less than 15°. The two flows collided with each other at a certain distance from the plate edge, and then detached from the plate to become a thermal plume. It was found that the above distance was determined solely by the inclination angles and was independent of sizes and heat fluxes of the plates. The local heat transfer coefficients of the plates were also measured. The results showed that the heat transfer from the plate was enhanced by the occurrence of the descending flows.

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Natural convection heat transfer from inclined isothermal plates

Cited by 37 publications

References 7 publications

Transition of free convection flow inside an inclined parallel walled channel: Effects of inclination angle and width of the channel

Transition of free convection flow inside an inclined parallel walled channel: Effects of inclination angle and width of the channel

Fluid flow and heat transfer of natural convection adjacent to upward‐facing inclined heated plates

Fluid flow and heat transfer of natural convection at a slightly inclined, upward‐facing, heated plate

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