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时的热应力。其目标是对多层防护服系统中的热量和质量传输以及人体几何形状导致的人体皮肤和衣服之间的空气层（微气候）进行基本的科学理解。本研究所开发的理论模型将使用热出汗假人测试和人体试验进行验证。拟议的研究将提供一种工具，可用于推进防护服和材料科学的最新技术水平，通过对多层防护服系统的穿着和人体反应中涉及的热量和水分传输机制的基本理解。这将有助于建立与穿着防护服相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之间的关系。所产生的基本知识将从根本上用于优化防护服的性能，并在识别与穿着该防护服系统引起的热应力相关的关键因素方面至关重要。该集成数值模型与本人建立的“快速火灾下耐热服装热防护性能建模”模型相结合，可为开发虚拟舒适性和防护性能评价实验室提供基础，并有助于开发更有效的防护服系统。

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.