caa a22 4500 469054034 CHVBK 20180323132838.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF01466275 doi (NATIONALLICENCE)springer-10.1007/BF01466275 Lotens Wouter Thermal Physiology Research Group, TNO-Institute for Perception, Kampweg 5, PO Box 23, NL-3769, ZG Soesterberg, The Netherlands aut Simulation of hand cooling due to touching cold materials [Elektronische Daten] [Wouter Lotens] Summary: A simple analytical model has been developed to simulate the cooling of the hands due to touching various types of cold material. The model consisted of a slab of tissue, covered on both sides with skin. The only active mechanism was the skin blood flow. The blood flow was controlled by body core temperature, mean skin temperature, and local hand temperature. The blood flowed along the palm before returning via the back of the hand. The control function was adapted from an earlier study, dealing with feet, but enhanced with a cold induced vasodilatation term. The palm of the hand was touching materials that were specified by conductivity and heat capacity. The hand was initially at a steady-state in a neutral environment and then suddenly grabbed the material. The resulting cooling curves have been compared to data from an experiment including six materials (foam, wood, nylon, steel, aluminium and metal at a constant temperature), three temperatures (−10, 0, and 10° C), two thermal states of the body (neutral and 0.4°C raised), and with and without gloves. There was a fair general agreement between the model and the experiment but the model failed to predict three specific effects: the unequal effect of equal 10° C steps in cold surface temperature on the temperature of the palm of the hand, the cooling effect of nylon, and the rapid drop in back of the hand temperature. Nevertheless the overall regression was 0.88 with a standard deviation between model and experiment of about 2.5°C. Springer-Verlag, 1992 Mathematical model nationallicence Heat transfer nationallicence Skin temperature nationallicence European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/1(1992-01-01), 59-65 0301-5548 65:1<59 1992 65 421 https://doi.org/10.1007/BF01466275 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01466275 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Lotens Wouter Thermal Physiology Research Group, TNO-Institute for Perception, Kampweg 5, PO Box 23, NL-3769, ZG Soesterberg, The Netherlands aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/1(1992-01-01), 59-65 0301-5548 65:1<59 1992 65 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer