An experimental investigation of natural convection flow on an inclined surface

Shaukatullah, H.; Gebhart, B.

doi:10.1016/0017-9310(78)90004-2

Cited by 45 publications

(28 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The figure shows that the dimensionless pitches increase slightly from those of the horizontal plate with the inclination angles, while they are independent of the heat fluxes. The former result is somewhat different from the previous results [8,9] in that the pitches are unchanged with the inclination angles. This discrepancy may be attributed to the previous experiments.…”

Section: Visualization Of Temperature Fieldscontrasting

confidence: 61%

“…It is apparent from the table that the main concerns of the previous experiments were directed to the following two groups of problems. 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].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, intensive experiments have been carried out to investigate their transition mechanisms. For example, Shaukatullah and Gebhart [8] measured the velocity and temperature distributions within the boundary layer along the inclined plate. They found that the velocities and temperatures vary periodically in the spanwise direction of the boundary layer.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Visualization Of Temperature Fieldscontrasting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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.

View full text Add to dashboard Cite

show abstract

“…Laminar free convection along horizontal, inclined and vertical plates with uniform surface temperature or uniform surface heat flux has been extensively studied for viscous fluid analytically [1][2][3][4][5][6]. There are also experimental investigations on natural convection from vertical, inclined and horizontal surfaces, covering both laminar and turbulent regimes under either a constant wall temperature or under constant surface heat flux condition, such as those studied in Shaukatullah and Gebhart [7], Yousaf et al [8], Vliet [9], Fujii and Imura [10], Siebers et al [11]. However, these analytical and experimental studies were conducted for uniform thermal boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Natural convection flow of second-grade fluid along a vertical heated surface with variable heat flux

Mustafa

Asghar

Hossain

2010

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

“…One will find from the table that the main concerns of the previous experiments were directed at the following two groups of problems. The first encompasses the problems concerned with the turbulent transition mechanisms over inclined plates, 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].…”

Section: Introductionmentioning

confidence: 99%

Fluid flow and heat transfer of natural convection adjacent to upward‐facing, inclined, heated plates (air case)

Kimura

Kitamura

2010

Heat Trans. Asian Res.

View full text Add to dashboard Cite

Turbulent transition mechanisms and heat transfer characteristics of natural convection over an inclined plate heated with constant heat fluxes were investigated experimentally. The experiments covered the ranges of modified Rayleigh numbers from 10 3 to 8 × 10 12 and inclination angles θ from 0 (horizontal) to 90° (vertical). The flow fields over the plate were visualized with smoke. The results showed that longitudinal vortices appear first in the laminar boundary layer when θ < 72°. Then, the vortices detach from the plate and become distorted, and, finally, a fully turbulent state is accomplished far downstream of the plate. Local Nusselt numbers were also measured under the same conditions as the above visualizations. The results showed that the numbers deviate from the laminar values with the formation of the longitudinal vortices and, then, increase significantly with the detachment of the vortices. Based on these results, empirical correlations for the laminar and turbulent heat transfer by natural convection were proposed.

show abstract

An experimental investigation of natural convection flow on an inclined surface

Cited by 45 publications

References 27 publications

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

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

Natural convection flow of second-grade fluid along a vertical heated surface with variable heat flux

Fluid flow and heat transfer of natural convection adjacent to upward‐facing, inclined, heated plates (air case)

Contact Info

Product

Resources

About