Accession Number : AD0428144


Title :   ANALOG COMPUTER SIMULATION OF TEMPERATURE REGULATION IN MAN.


Descriptive Note : Rept. for Oct 60-Dec 62,


Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF PHYSIOLOGY AND BIOPHYSICS


Personal Author(s) : Brown,Arthur C


Report Date : Dec 1963


Pagination or Media Count : 108


Abstract : The objectives of this study were (1) to derive the mathematical equations describing heat distribution and temperature regulation in man; (2) to solve these equations by the use of an electronic analog computer; (3) to use the computer to predict the response of a human to cold water immersion and to check the predictions against experimental data. The mathematical equations for temperature distribution were derived from the physical principles describing heat flow, first in the form of integral equations and the corresponding vector differential equations, and in the form of difference differential equations appropriate for electronic simulation. From these equations, a model of the body was constructed involving four concentric thermal elements. The equations describing the behavior of the thermal elements were simulated electronically. Feedback loops representing the analog of control of metabolism and vasomotor state were introduced into the model, simulating the human temperature regulation system. Solutions were generated by the computer under the specific condition of coldwater immersion, for varying clothing insulation and environmental (water) temperature. (Author)


Descriptors :   MATHEMATICAL MODELS , BODY TEMPERATURE , ANALOG COMPUTERS , DISTRIBUTION , HUMANS , SIMULATION , ANALYSIS OF VARIANCE , METABOLISM , RESPIRATION , THERMAL INSULATION , CLOTHING , TEMPERATURE CONTROL


Distribution Statement : APPROVED FOR PUBLIC RELEASE