Abstract
The thermal and material transport from spheres in turbulent air streams have been reduced to analytical expressions taking into account the Reynolds number of the flow, the level of turbulence of the air stream, and the diameter of the sphere. The coefficients for these expressions are based upon experimental work ranging from drops to spheres of about 1 ft in diameter. The range of Reynolds numbers involved extends from 2 to 1.33 × 10 6. The standard error of estimate for all the experimental measurements was about 15 per cent, while the standard error of estimate for measurements for a much smaller range of sphere diameters was approximately 4 per cent.
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