A mathematical model of the human thermal system

Wissler, Eugene H.

doi:10.1007/bf02476835

Cited by 152 publications

(50 citation statements)

References 6 publications

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“…Some difficulties are created by the simplistic treatment, for example, "effective thermal conductivity" may not be independent of body size and, furthermore, the model does not account for any metabolic heat production or evaporative cooling. A more complex model, such as that developed by Wissler (1964) for human studies, would be required for a rigorous quantitative assessment.…”

Section: (I)mentioning

confidence: 99%

Time constants of heating and cooling in the eastern water dragon, Physignathus lesueruii and some generalizations about heating and cooling in reptiles

Grigg

Drane

Courtice

1979

Journal of Thermal Biology

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Abstract-1. In keeping with other reptiles, core temperature of the lizard Physignathus lesueurii responds more rapidly to a step function increase in temperature than to a corresponding decrease.2. Observations on twelve species (five families) of non-Chelonian reptiles heating and cooling in air and water show that strongly predictable relationships exist between thermal time constants and body size. Chelonia show a different pattern.3. These observations are compared with the predictions of a simple model which, although not sufficiently complex to simulate physiological changes, provides insight into the relative importance of the physical and biological factors which underlie the observed relationships.

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Section: (I)mentioning

confidence: 99%

Time constants of heating and cooling in the eastern water dragon, Physignathus lesueruii and some generalizations about heating and cooling in reptiles

Grigg

Drane

Courtice

1979

Journal of Thermal Biology

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“…Since the success of this approach will require extensive environmental chamber data collection to obtain the library of model structures, it is important to minimize the number of experimental runs and the run time to develop a model. Using the D-optimality criterion (Bates and Watts, 1988) in this article, we demonstrate a 70% reduction in experimental time in comparison to the modelling in Rollins et al (2006) using the model in (Wissler, 1964(Wissler, , 1985 as a surrogate person. The supporting work of this study is presented later.…”

Section: Introductionmentioning

confidence: 78%

“…As mentioned above, in Rollins et al (2006) we demonstrated the ability of our BOM method to accurately model real data from literature (Hardy and Stolwijk, 1966) and computer generated data from a HTS semi-theoretical model with qualitatively accurate physiological behaviour (Wissler, 1964(Wissler, , 1985. Since the success of this approach will require extensive environmental chamber data collection to obtain the library of model structures, it is important to minimize the number of experimental runs and the run time to develop a model.…”

Section: Introductionmentioning

confidence: 90%

Optimal Experimental Design for Human Thermoregulatory System Identification

Hulting

Rollins

Bhandari

2006

Chemical Engineering Research and Design

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“…The advantages of this program were larger numbers of blood temperature valuables and the fact that, unlike previous models, the controlling outputs of the thermoregulation model had local characteristics [2][3][4][5][6][7] . By using the improved computer program, we were able to simulate the whole body temperatures of the subjects during exercise described in Gagge et al 1) were simulated.…”

Section: Resultsmentioning

confidence: 99%

“…For this reason several mathematical models of thermoregulation in humans have been developed [2][3][4][5][6][7] . We developed a computer program for the numerical analysis of thermal conditions of all segments and blood circulatory systems in the human body.…”

Section: Introductionmentioning

confidence: 99%

Prediction Computer Program for Whole Body Temperatures and its Application under Various Working Level and Thermal Environmental Condition Combinations

Yokoyama

Tao²,

Kakuta

2007

Ind Health

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We introduced a computer program developed for the numerical analysis of thermal conditions of all segments and blood circulatory systems in the human body to precisely evaluate human thermal physiological responses. In this program, a cylindrical model consisting of internal multi-layers is adapted for the segment of the human body. For the multi-layered concentric cylindrical model we adopted a new numerical solution method. By using this computer program the internal tissue temperatures, heat fluxes and blood temperatures of all segments in the human body could be calculated simultaneously. This program also included a subroutine for calculation of thermoregulatory response. This paper describes the improvements made to this computer program for simulating individual physical differences and its application to various working levels. The main points for improvement were the assigning procedures of physical characteristics of individuals and local muscle heat production. The improved computer program was used to simulatethe whole body temperatures of the subjects during exercise described in Gagge, Stolwijk and Saltin (1969) 1) were simulated. The calculated results were agreed with the measured results under the combination of the three kinds of exercise and the three types of environmental condition.

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A mathematical model of the human thermal system

Cited by 152 publications

References 6 publications

Time constants of heating and cooling in the eastern water dragon, Physignathus lesueruii and some generalizations about heating and cooling in reptiles

Time constants of heating and cooling in the eastern water dragon, Physignathus lesueruii and some generalizations about heating and cooling in reptiles

Optimal Experimental Design for Human Thermoregulatory System Identification

Prediction Computer Program for Whole Body Temperatures and its Application under Various Working Level and Thermal Environmental Condition Combinations

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