The development of a numerical model for predicting the degree of thermal stress associated with protective clothing

本研究的目的是建立一个数值模型来预测在各种热条件下穿着防护服的热应力。目标是对多层防护服系统和人体皮肤与衣服之间的空气层（小气候）中的热量和质量传输有一个基本的科学认识。本研究建立的理论模型将通过热出汗人体试验和人体试验进行验证。通过对多层防护服系统的热湿传输机制和人体反应的基本理解，本研究将提供一种工具，可用于推动防护服和材料科学的发展。它将有助于建立与穿着防护服有关的热应力与穿着者的生理/活动、环境条件以及织物性能和服装设计的影响之间的关系。所产生的基本知识将从根本上有助于优化防护服的性能，并对确定与穿着该防护服系统引起的热应力相关的关键因素至关重要。该综合数值模型与本人建立的“Flash Fire exposure中耐热服装的热防护性能建模”相结合，可为建立虚拟舒适防护性能评估实验室提供基础，并有助于开发更高效的防护服系统。

The objective of this research is to develop a numerical model to predict thermal stress associated with wearing protective clothing in various thermal conditions. The goal is to develop a fundamental scientific understanding of heat and mass transport in multilayer protective clothing system and air layers (microclimate) between the human skin and clothing due to the human body geometry. The theoretical model developed by this research will be validated using a thermal sweating manikin test and human trials. The proposed research will provide a tool that can be used to advance the state of the art of protective clothing and material science by developing a fundamental understanding of the heat and moisture transport mechanisms involved in the wearing of multi-layer protective clothing system and the response of human body. It will help to establish a relationship between thermal stress associate with wearing protective clothing and the effects of wearers' physiology/activity, environmental conditions as well as fabric properties and garment design. The basic knowledge generated will be fundamentally useful for optimizing the performance of protective clothing and critical in identifying key factors related to thermal stress caused by wearing this protective clothing system. This integrated numerical model combined with the one I have established "Modeling the Thermal Protective Performance of Heat Resistant Garments in Flash Fire Exposures" could provide a basis for developing a virtual comfort and protective performance evaluation lab and help to develop more efficient protective clothing system.