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| 大气压力对织物热湿特性影响的数值研究 | |
| 引用本文： | 李凤志,刘迎曦,罗钟铉,李毅.大气压力对织物热湿特性影响的数值研究[J].力学与实践,2003,25(4):50-53. |
| 作者姓名： | 李凤志 刘迎曦 罗钟铉 李毅 |
| 作者单位： | 1. 大连理工大学工程力学系,大连,116023 2. 大连理工大学应用数学系,大连,116023 3. 香港理工大学纺织与制衣学院,中国,香港 |
| 基金项目： | 国家自然科学基金(10072014)，高校博士点专项基金(2000014107) |
| 摘 要： | 为了模拟多孔织物内复杂的热湿传递过程，为不同大气压力条件下服装的热湿舒适性设计提供理论基础，从织物内热湿传输机理角度出发，建立了考虑大气压力影响的织物热湿传输耦合模型，比较了常压下的理论预测和实验结果，通过数值算例考察了大气压力对织物热湿特性的影响。 |
| 关 键 词： | 大气压力 织物 热湿特性 数值计算 热湿舒适性设计 数学模型 服装 |
| 修稿时间： | 2002年7月23日 |
Effect of atmospheric pressure on heat and moisture transport within hygroscopic fabrics |
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| LI Fengzhi LIU Yingxi.Effect of atmospheric pressure on heat and moisture transport within hygroscopic fabrics[J].Mechanics and Engineering,2003,25(4):50-53. | |
| Authors: | LI Fengzhi LIU Yingxi |
| Abstract: | In order to clarify the effect of the atmospheric pressure on the heat and moisture transfer within hygroscopic fabrics, based on the improved sorption rate equation and the Darcy's law, an analytical model is proposed. From the fit between the theoretically calculated temperature changes and those measured from experiments, it is shown that the models can predict the simultaneous heat transfer that is coupled in the moisture-diffusion process during humidity transients. Furthermore, the temperature and moisture concentration distribution in the inter-fiber void space at different atmospheric pressure conditions are numerically computed and compared. It shows that at the low atmospheric pressure, the temperature peak and the density of vapor are higher than those at the high atmospheric pressure. |
| Keywords: | atmospheric pressure fabric coupling model |
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