3D Numerical Simulation of Laminar Flow and Conjugate Heat Transfer through Fabric

Autex Research Journal

Militky Jiri¹  Zhu Guocheng¹  Kremenakova Dana¹  Wang Yan¹  Mishra Rajesh¹  Wiener Jakub¹ 

[1] Department of material engineering, Technical University of Liberec, Studentská 1402/2, Liberec, Czech Republic, Tel: [phone];

关键词: numerical simulation;    fluid flow;    heat transfer;    heat convection;    heat transfer coefficient;   

DOI  :  10.1515/aut-2015-0052

来源: DOAJ

【 摘 要 】

The air flow and conjugate heat transfer through the fabric was investigated numerically. The objective of this paper is to study the thermal insulation of fabrics under heat convection or the heat loss of human body under different conditions (fabric structure and contact conditions between the human skin and the fabric). The numerical simulations were performed in laminar flow regime at constant skin temperature (310 K) and constant air flow temperature (273 K) at a speed of 5 m/s. Some important parameters such as heat flux through the fabrics, heat transfer coefficient, and Nusselt number were evaluated. The results showed that the heat loss from human body (the heat transfer coefficient) was smallest or the thermal insulation of fabric was highest when the fabric had no pores and no contact with the human skin, the heat loss from human body (the heat transfer coefficient) was highest when the fabric had pores and the air flow penetrated through the fabric.

【 授权许可】

Unknown