Numerical Simulation of Heat Transfer Process of Coated Fabrics at High Temperature
ZHANG Qian1, ZHENG Zhenrong1, ZHAO Xiaoming1, MAO Kezhu2, LUO Lijuan2
1 School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China; 2 Institute of Aerospace Materials and Technology, Beijing 100076, China
Abstract: The numerical model of heat transfer of coated carbon fiber fabrics at high temperature was established. The model was validated by quartz lamp ablation test, and then was used to investigate the effect of high-performance fiber types on heat transfer process, and reveal the inf-luence of structural density on the thermal insulation properties of coated fabrics. The results show that the numerical model of heat transfer of coated carbon fiber fabric can reflect the heat transfer process at high temperature. The average relative error between simulated and experimental values is 9.47% in 135 s. When it is up to 115 s, the temperature of the back of the coated glass fiber fabric is 58 ℃ lower than that of the coated carbon fiber fabric, that is, the coated glass fiber fabric has good heat insulation performance. In the case of the same fabric weave pattern and yarn fineness, when the weft density of the fabric is unchanged and the warp density is increased from 100/10 cm to 180/10 cm, the tempera-ture of the back of the coated glass fabric is reduced from 601 ℃ to 553 ℃. The temperature difference is 48 ℃. When the warp density is the same and the weft density is gradually increased from 100/10 cm to 160/10 cm, the temperature of the back of the coated glass fabric is gradually reduced from 574 ℃ to 555 ℃, and the temperature difference is 19 ℃, indicating that its thermal insulation performance is gradually enhanced.
张倩, 郑振荣, 赵晓明, 毛科铸, 罗丽娟. 高温下涂层织物传热过程的数值模拟[J]. 材料导报, 2020, 34(16): 16167-16171.
ZHANG Qian, ZHENG Zhenrong, ZHAO Xiaoming, MAO Kezhu, LUO Lijuan. Numerical Simulation of Heat Transfer Process of Coated Fabrics at High Temperature. Materials Reports, 2020, 34(16): 16167-16171.
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2020, Vol. 34 
