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

• Autorzy: Zhu G. , Kremenakova D. , Wang Y. , Militky J. , Mishra R. , Wiener J.

Identyfikatory

DOI

10.1515/aut-2015-0052

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

numerical simulation; fluid flow; heat transfer; heat convection; heat transfer coefficient

PL

symulacja numeryczna; przepływ cieczy; transfer ciepła; konwekcja ciepła; współczynnik przenikania ciepła

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2017
• Tom: Vol. 17, no. 1
• Strony: 53--60
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Zhu G.

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

autor

Kremenakova D.

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

autor

Wang Y.

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

autor

Militky J.

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

autor

Mishra R.

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

autor

Wiener J.

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

Bibliografia

• [1] Lee, S. C.; Cunnington, G. R. (2000). Conduction and radiation heat transfer in high-porosity fiber thermal insulation. J Thermophys Heat Tr, 14 (2), 121-136.
• [2] Mohammadi, M.; Banks-Lee, P.; Ghadimi, P. (2003). Determining effective thermal conductivity of multilayered nonwoven fabrics. Text Res J, 73 (9), 802-808.
• [3] Guocheng Zhu; Dana Kremenakova; Yan Wang, et al. (2014). An analysis of effective thermal conductivity of heterogeneous materials. Autex Res J, 14 (1), 14-21.
• [4] Etemoglu, A. B.; Ulcay, Y.; Can, M., et al. (2009). Mathematical modelling of combined diffusion of heat and mass transfer through fabrics. Fiber Polym, 10 (2), 252-259.
• [5] Darvishzadeh, M.; Semnani, D.; Shirani, E., et al. (2012). Improvement Modelling of Heat Transfer by Using Complex Neural Net in Fibrous Structures. Fiber Polym, 13 (4), 542-548.
• [6] Raeisian, L.; Mansoori, Z.; Hosseini-Abardeh, R., et al. (2013). An Investigation in Structural Parameters of Needle-Punched Nonwoven Fabrics on Their Thermal Insulation Property. Fiber Polym, 14 (10), 1748-1753.
• [7] Bhattacharjee, D.; Kothari, V. K. (2008). Measurement of Thermal Resistance of Woven Fabrics in Natural and Forced Convections. Research Journal of Textile and Apparel, 12 (2), 39-49.
• [8] Bhattacharjee, D.; Kothari, V. K. (2008). Prediction of thermal resistance of woven fabrics. Part II: Heat transfer in natural and forced convective environments. J Text I, 99 (5), 433-449.
• [9] Cengel, Y. A., (2003). Heat transfer: A practical approach. (2nd ed). New York, McGraw-Hill.
• [10] Beithou, N.; Albayrak, K.; Abdulmajeed, A. (1998). Effects of porosity on the free convection flow of non-Newtonian fluids along a vertical plate embedded in a porous medium. Tr. J. Eng. Environ. Sci., 22, 203-209.
• [11] Hatch, K. L.; Woo, S. S.; Barker, R. L., et al. (1990). In Vivo Cutaneous and Perceived Comfort Response to Fabric. Part 1: Thermophysiological Comfort Determinations for Three Experimental Knit Fabrics. Textil. Res. J., 60 (7), 405-412.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).