Experimental study of mass exchange in axisymmetric cavities

Degtyareva, V. V.; Mukhin, V. A.; Nakoryakov, V. E.

doi:10.1007/bf00825005

Cited by 3 publications

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“…In [2][3][4][5][6][7][8], the length of the transverse cavity L was varied, and the Reynolds number was calculated by the formula Re L = U L/ν, where U is the main flow velocity and ν is the kinematic viscosity. In [9], the varied parameter was the cavity depth H, and the governing Reynolds number was Re H = U H/ν.…”

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confidence: 99%

“…Results of studying the flow structure in the vicinity of the walls and distributions of pressure coefficients in the flow past cavities with inclined walls and with moderate aspect ratios are reported in [1]. The present paper describes the data on thermal characteristics and heat transfer in the same cavities with the angle of inclination of the side walls ϕ varied from 30 to 90 • .Heat transfer in rectangular cavities with different aspect ratios (ratios of the cavity width to its depth) was considered in some previous papers [2][3][4][5][6][7][8][9][10][11][12][13]. In [2][3][4][5][6][7][8], the length of the transverse cavity L was varied, and the Reynolds number was calculated by the formula Re L = U L/ν, where U is the main flow velocity and ν is the kinematic viscosity.…”

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Turbulent flow past a transverse cavity with inclined side walls. 2. Heat transfer

Dyachenko

Терехов

Yarygina

2007

J Appl Mech Tech Phys

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Convective heat transfer in a transverse cavity with a small aspect ratio, angle of wall inclination ϕ = 30-90 • , and heated bottom, frontal, and rear walls of the cavity is studied experimentally. Temperature distributions are measured in longitudinal and transverse sections on three walls; temperature fields are measured over the entire heated surface. Local and mean heat-transfer coefficients are calculated. The highest intensification of heat transfer is found to occur on the rear wall for low values of ϕ. Reconstruction of the one-cell structure to the two-cell structure of the primary vortex in the cavity leads to a drastic decrease in heat transfer over the cavity span from the end faces toward the center in the case with ϕ = 60 and 70 • . A certain increase in the mean heat-transfer coefficient averaged over the entire heated surface is noted for ϕ = 60 • .Introduction. Results of studying the flow structure in the vicinity of the walls and distributions of pressure coefficients in the flow past cavities with inclined walls and with moderate aspect ratios are reported in [1]. The present paper describes the data on thermal characteristics and heat transfer in the same cavities with the angle of inclination of the side walls ϕ varied from 30 to 90 • .Heat transfer in rectangular cavities with different aspect ratios (ratios of the cavity width to its depth) was considered in some previous papers [2][3][4][5][6][7][8][9][10][11][12][13]. In [2][3][4][5][6][7][8], the length of the transverse cavity L was varied, and the Reynolds number was calculated by the formula Re L = U L/ν, where U is the main flow velocity and ν is the kinematic viscosity. In [9], the varied parameter was the cavity depth H, and the governing Reynolds number was Re H = U H/ν. As the parameter H/L in previous studies took different values, the generalizing relations for the mean Nusselt numbers were also different: Nu L ∼ Re 0.5 L [6], Nu L ∼ Re 0.8 L [3,4], Nu H ∼ Re 0.8 H [9], and Nu L ∼ Re

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