... of this study is to extend fundamental knowledge about heat transfer and fluid dynamic processes in conduits pertinent to sCO 2 with an emphasis on flow direction and inclination effects. This paper presents the study on effects of gravity, buoyancy on sCO 2 flow at temperatures near and away from the pseudo...

...Nouali Nassira; Mataoui Amina The effect of mixed convection of twin vertical jets is investigated numerically in this paper. The results are presented specifically for flows affected by buoyancy for two parallel jets of same velocities ranging between 0.25 m/s and 5.0 m/s and temperatures between...

... formation, buoyancy induced flow and heat transfer, and the proportion of intersurface radiation in overall heat transfer rises as the Richardson number and surface emissivity increase. At low Richardson numbers, the pressure in the stagnation region is greater than the atmospheric pressure. However...

...Liu Changchun; Deng Tiandiao; Zhou Shasha; Liu Xinlei; Deng Jun; Luo Zhenmin; Ma Li Buoyancy causes a horizontal jet flame to bend upward when it loses sufficient initial momentum. Therefore, the variation in flame trajectory must be considered to accurately predict the thermal radiant flux...

... dip was attributed to a possible Marangoni flow. This study reveals that buoyancy-driven flow is solely responsible for the nonmonotonic temperature distribution at the surface of an evaporating steadily fed spherical water droplet. 1 Corresponding author. Contributed by the Heat Transfer...

...S. Abishek; R. Narayanaswamy This paper delineates the results of an investigation on the combined effects of buoyancy and surface-radiation on heat transfer from an isothermal surface, subjected to a confined submerged impinging air-jet issuing from a slot-nozzle. The nondimensionalized governing...

... as the Darcy number and channel-to-cylinder height ratio increase. The buoyancy effect on the local Nusselt number is clearer for B / H = 0.1 than for B / H = 0.3 and B / H = 0.5 . To solve the dimensionless conservation equations, this paper has used the Galerkin finite element method, which produces...

...Rishi Raj; Jungho Kim A pool boiling regime map demarcating the boundary between the surface tension and buoyancy dominated boiling regimes is developed based on heater size and gravity. For large heaters and/or high gravity conditions, boiling is dominated by buoyancy, and the ebullition cycle...

...C. L. Chow; W. K. Chow A possible problem in using solar chimney as a natural smoke exhaust system will be identified in this paper. Smoke generated in a fire might not be removed effectively if the glazing walls are heated up due to exposure to solar radiation. It is because the buoyancy...

... pressure water. At low mass velocities, the integral heat transfer measurements exhibited large localized wall temperature spikes that could not be accurately predicted with Nusselt correlations. Detailed mean and turbulent velocities along with FLUENT simulations show that buoyancy effects cause...

... convection, three different buoyancy-driven cavities have been simulated: a tall cavity with a 30:1 aspect ratio, a cavity with a 5:1 aspect ratio, and, finally, a 4:1 aspect ratio cavity. All cases are solved under moderate and∕or transitional Rayleigh numbers ( 2.43 × 10 10 , 5 × 10 10 , and 1 × 10 10...

... in the literature. It has been found that the two investigated models reasonably predict the mean flow properties of the flow field. Nevertheless, the ASM proves to be better than the k - ε method to predict the effects of buoyancy and the turbulence structure. It has been found that the increase of the coflow can...

...A. G. Agwu Nnanna This paper presents a systematic experimental method of studying the heat transfer behavior of buoyancy-driven nanofluids. The presence of nanoparticles in buoyancy-driven flows affects the thermophysical properties of the fluid and consequently alters the rate of heat transfer...

...-preserving line thermal having a conserved source specific buoyancy flux per unit length that moves in the streamwise (vertical) direction (parallel to the direction of both the initial source flow and the gravity vector). The resulting self-preserving structure consisted of two counter-rotating vortices...

.... organic compounds natural convection forced convection pipe flow boundary layer turbulence mixed convection developing flow buoyancy entrance region heat transfer correlations In the heat transfer process between a solid boundary and a moving fluid, buoyancy forces can be of the same...