织物热传递性能及其数值模拟

发布时间：2018-03-20 22:52

本文选题：织物　切入点：热传递性能　出处：《武汉纺织大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着社会的发展和消费者个性化、多元化生活方式的需求,人们对服装热湿舒适性等方面提出了更高的标准和要求。作为服装的物质基础——织物的热湿传递性能则成了众多纺织科研工作者研究重点内容。因此,对织物热传递过程的机理及其影响因素研究显得尤为重要,这对提高服装面料的舒适性与功能性,具有重要的理论和现实意义。本文首先研究了平板织物保温性能测试仪的仪器结构,然后在此基础上自行研制了可时、动态显示热板散热功率、织物表面温度的织物热传递性能测试仪,结果显示,该测试仪与常规平板织物保温性能测试仪的测试结果相接近。然后利用该测试仪对组织结构、织物纤维材料和常规参数不同的织物进行热传递性能测试。同时研究分析织物组织结构、经纬纱密度及其他结构参数,利用Comsol有限元软件自带的三维建模模块对织物进行模型建立,然后利用Comsol Multiphysics对建立的织物模型进行热传递性能的数值模拟,结果显示:1、织物热传递性能测试仪测得的平纹织物、斜纹织物与缎纹织物表面温度的实时变化曲线与有限元软件模拟得到的温度变化曲线有着相同的变化趋势,说明对织物模型进行数值模拟得到的织物表面温度可以准确的反映织物表面真实的温度变化情况;2、将使用有限元软件计算得到的织物热阻值与织物热传递性能测试仪测试得到的热阻值进行比较,结果发现,两组数据吻合性较好。3、使用有限元软件对织物的组织结构、组织结构参数对其热传递性能的影响进行研究与分析,发现织物紧度、透气量、厚度、编织结构、织物传热各向异性等因素都将会对织物的热阻值产生一定的影响,是影响织物热传递性能中不可忽略的部分。综上所述,本文建立了织物具体交织结构的三维几何模型,其数值模拟结果与实测结果有较好的吻合性,说明该模型能够较吻合的模拟织物的热传递过程,这对研究织物的热传递有一定的理论意义。
[Abstract]:With the development of society and individual consumers, diversified lifestyle needs, people put forward higher standards and requirements for clothing thermal comfort and so on. As the basic material of garment, fabric heat and moisture transfer property became many textile scientific researchers focus. Therefore, the transfer of the fabric heat transfer mechanism and the factors influencing the process of research is very important to improve the comfort and functional fabric, which has important theoretical and practical significance. This paper studies the flat fabric insulation performance tester instrument structure, and then can be developed, dynamic display of hot plate heat radiating power. Fabric surface temperature transfer performance test instrument, test results showed that the test instrument with conventional flat fabric insulation tester are close. Then use the tester to group Fabric structure, fabric materials and conventional parameters of different fabric heat transfer performance test. At the same time of fabric structure, yarn density and other structural parameters, 3D modeling module with the finite element software Comsol on the fabric model, then use Comsol Multiphysics to establish the model of fabric by numerical simulation, the heat transfer performance of the results showed that: 1, the fabric heat transfer performance test of plain woven fabric, real-time curve twill and satin fabric surface temperature and the finite element analysis software to simulate the temperature change curves obtained with the same trend, that of fabric model the simulated fabric surface temperature change of temperature can accurately reflect the true surface of the fabric; 2, fabric thermal resistance is calculated by using the finite element software and the values of fabric heat transfer performance Thermal resistance is the measured values are compared, results show that the two sets of data are in good agreement with.3, the organization structure of fabric by using finite element software, research and analysis of the effect of structure parameters on the heat transfer performance, found that the degree of the fabric, air permeability, thickness, woven fabric structure, heat transfer anisotropic factors will have a certain impact on the fabric thermal resistance value can not be ignored in the part of the performance effect of fabric heat transfer. To sum up, this paper establishes a three-dimensional geometric model of fabric interwoven concrete structure, the numerical simulation results agree well with the experimental results, the simulation shows that the transfer process the model can more consistent fabric heat, which is the study of fabric heat transfer has certain theoretical significance.

【学位授予单位】：武汉纺织大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TS101.923

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