Numerical Investigation of Heat Transfer in Garment Air Gap

• Autorzy: Zhang Yijie , Jia Juhong

Identyfikatory

DOI

10.2478/aut-2020-0055

• Języki publikacji: EN

Abstrakty

EN

This article aimed to study the characteristics and mechanisms of 3D heat transfer through clothing involving the air gap. A three-dimensional finite volume method is used to obtain the coupled conductive, convective, and radiative heat transfer in a body-air-cloth microclimate system. The flow contours and characteristics of temperature, heat flux, and velocity have been obtained. The reason for the high flux and temperature regions was analyzed. Computational results show that the coupled effect of the air gap and the airflow between the skin and garment strongly influences the temperature and heat flux distribution. There are several high-temperature regions on the clothing and high heat flux regions on the body skin because the conductive heat flux can cross through the narrow air gap and reach the cloth surface easily. The high-speed cooling airflow brings about high forced convective heat flux, which will result in the temperature increase on the upper cloth surface. The radiative heat flux has a strong correlation with the temperature gradient between the body and clothing. But its proportion in the total heat flux is relatively small.

Słowa kluczowe

EN

garment; air gap; heat transfer; conduction; convection; numerical simulation

PL

odzież; szczelina powietrzna; przenoszenie ciepła; przewodzenie; konwekcja; symulacja numeryczna

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2022
• Tom: Vol. 22, no. 1
• Strony: 89--95
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

Zhang Yijie

• School of Fashion Design and Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
• Shangyu College, Shaoxing University, Shaoxing, Zhejiang 312300, China

autor

Jia Juhong

• School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).