Editorial Type:
Article
Article Type:
Research Article

Windward Cooling: An Overlooked Factor in the Calculation of Wind Chill

Randall J. Osczevski Defence and Civil Institute of Environmental Medicine, Toronto, Ontario, Canada

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Online Publication:
01 Dec 2000
Print Publication:
01 Dec 2000
DOI:
https://doi.org/10.1175/1520-0477(2000)081<2975:WCAOFI>2.3.CO;2
Page(s):
2975–2978
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Wind chill equivalent temperatures calculated from a recent vertical cylinder model of wind chill are several degrees colder than those calculated from a facial cooling model. The latter was based on experiments with a heated model of a face in a wind tunnel. Wind chill has sometimes been modeled as the overall heat transfer from the surface of a cylinder in cross flow, but such models average the cooling over the whole surface and thus minimize the effect of local cooling on the upwind side, particularly at low wind speeds. In this paper, a vertical cylinder model of wind chill has been modified so that just the cooling of its windward side is considered. Wind chill equivalent temperatures calculated with this new model compare favorably with those calculated by the facial cooling model.

Corresponding author address: Randall J. Osczevski, Defence and Civil Institute of Environmental Medicine, 1133 Sheppard Ave. West, Toronto, ON M3M 3B9, Canada. E-mail: rjo@dciem.dnd.ca

Wind chill equivalent temperatures calculated from a recent vertical cylinder model of wind chill are several degrees colder than those calculated from a facial cooling model. The latter was based on experiments with a heated model of a face in a wind tunnel. Wind chill has sometimes been modeled as the overall heat transfer from the surface of a cylinder in cross flow, but such models average the cooling over the whole surface and thus minimize the effect of local cooling on the upwind side, particularly at low wind speeds. In this paper, a vertical cylinder model of wind chill has been modified so that just the cooling of its windward side is considered. Wind chill equivalent temperatures calculated with this new model compare favorably with those calculated by the facial cooling model.

Corresponding author address: Randall J. Osczevski, Defence and Civil Institute of Environmental Medicine, 1133 Sheppard Ave. West, Toronto, ON M3M 3B9, Canada. E-mail: rjo@dciem.dnd.ca
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