“人一舱”热力学数学模型

DYNAMIC MATHEMATICAL MODEL OF THERMODYNAMICS ON "HUMAN-CABIN

本文将互相关联的人与座舱环境组成一个大系统,建立了人-舱动态热力学数学模型。模型所用数据系由实验所得,经验公式亦为实验所验证,因而模型具有较高的可靠性。 运用人-舱动态数学模型可以预测飞行员在各种飞行条件下的多种热生理指标,并进而合理确定或检验空调系统的冷却(或加温)能力及各种性能参数。

The dynamic mathematical model of thermodynamics on 'human-cabin'has been presented by considering an intergral system of cabin and human.The physiological data used in the model were obtained from tests, and the empirical formulas used in the model were checked with tests.Based on the model, several thermophysiological indexes for the pilot in a cabin can be predicted and the cooling or heating capacity and the other parameters of an air conditioning system can be determined.As an example, the dynamic characteristics of the temperature within the cabin of a fighter in a typical flight profile and the thermophysiological indexes for the pilot set in it were predicted.The finite difference method was applied to computation of the transient temperature within a cabin, and the Roung-Kutta integration scheme was adopted in order to compute thermophysiological indexes of a body tinder varying environmental conditions.The computational results show that the mathematical model presented in this paper is satisfied.