Abstract
The convective heat transfer from a cylinder to a humid air stream flowing normal to the cylinder was investigated experimentally at atmospheric pressure over a range of variables which is relevant to the use of hot‐wire anemometry: air temperatures between 30 °C and 70 °C and velocities between 12 and 37 m/s. For molar fractions of water vapour up to 0.27, the heat transfer increased with increasing humidity. The ratio of heat transfer rates in humid air and dry air is a unique function of the molar fraction of water vapour, independent of the air temperature and flow velocity.
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Received: 28 November 1996/Accepted: 5 July 1997
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Still, M., Venzke, H., Durst, F. et al. Influence of humidity on the convective heat transfer from small cylinders. Experiments in Fluids 24, 141–150 (1998). https://doi.org/10.1007/s003480050161
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DOI: https://doi.org/10.1007/s003480050161