Prediction of facial cooling while walking in cold wind.
A dynamic model of cheek cooling has been modified to account for increased skin blood circulation of individuals walking in cold wind. This was achieved by modelling the cold-induced vasodilation response to cold as a varying blood perfusion term, which provided a source of convective heat to the skin tissues of the model. Physiologically-valid blood perfusion was fitted to replicate the cheek skin temperature responses of 12 individuals experimentally exposed to air temperatures from -10 to 10 degrees C at wind speeds from 2 to 8 ms(-1). Resultant cheek skin temperatures met goodness-of-fit criteria and implications on wind chill predictions are discussed.
Tikuisis
Peter
P
Defence Research and Development Canada, Simulation, Modelling, Acquisition, Rehearsal, and Training, 1133 Sheppard Avenue West, P.O. Box 2000, Toronto, Ont., Canada M3M 3B9. Peter.Tikuisis@drdc-rddc.gc.ca
Ducharme
Michel B
MB
Brajkovic
Dragan
D
D000328:Adult; D000465:Algorithms; D001831:Body Temperature / Q000502:physiology*; D001833:Body Temperature Regulation / Q000502:physiology; D002610:Cheek / Q000098:blood supply / Q000502:physiology; D003080:Cold Temperature; D018481:Convection; D005260:Female; D005627:Frostbite / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D008297:Male; D008954:Models, Biological; D012039:Regional Blood Flow / Q000502:physiology; D012727:Sex Characteristics; D012881:Skin Temperature / Q000502:physiology; D014664:Vasodilation / Q000502:physiology; D016138:Walking / Q000502:physiology*; D014919:Wind