An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments

A comprehensive study of the multiscale homogenized thermal conductivities and thermomechanical properties is conducted towards the filament groups of European Advanced Superconductors (EAS) strand via the recently proposed Multiphysics Locally Exact Homogenization Theory (LEHT). The filament groups...

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Autores principales:	Zhao Xiaoyu, Wang Guannan, Chen Qiang, Duan Libin, Tu Wenqiong
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	nb3sn filaments thermal conductivity thermomechanical analysis hierarchical microstructures multiphysics locally exact homogenization theory multiscale homogenization Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/57a4ac536fc44592a9bdc8bf64c71a83
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spelling	oai:doaj.org-article:57a4ac536fc44592a9bdc8bf64c71a832021-12-05T14:10:57ZAn effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments2191-909710.1515/ntrev-2021-0015https://doaj.org/article/57a4ac536fc44592a9bdc8bf64c71a832021-04-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0015https://doaj.org/toc/2191-9097A comprehensive study of the multiscale homogenized thermal conductivities and thermomechanical properties is conducted towards the filament groups of European Advanced Superconductors (EAS) strand via the recently proposed Multiphysics Locally Exact Homogenization Theory (LEHT). The filament groups have a distinctive two-level hierarchical microstructure with a repeating pattern perpendicular to the axial direction of Nb3Sn filament. The Nb3Sn filaments are processed in a very high temperature between 600 and 700°C, while its operation temperature is extremely low, −269°C. Meanwhile, Nb3Sn may experience high heat flux due to low resistivity of Nb3Sn in the normal state. The intrinsic hierarchical microstructure of Nb3Sn filament groups and Multiphysics loading conditions make LEHT an ideal candidate to conduct the homogenized thermal conductivities and thermomechanical analysis. First, a comparison with a finite element analysis is conducted to validate effectiveness of Multiphysics LEHT and good agreement is obtained for the homogenized thermal conductivities and mechanical and thermal expansion properties. Then, the Multiphysics LEHT is applied to systematically investigate the effects of volume fraction and temperature on homogenized thermal conductivities and thermomechanical properties of Nb3Sn filaments at the microscale and mesoscale. Those homogenized properties provide a full picture for researchers or engineers to understand the Nb3Sn homogenized properties and will further facilitate the material design and application.Zhao XiaoyuWang GuannanChen QiangDuan LibinTu WenqiongDe Gruyterarticlenb3sn filamentsthermal conductivitythermomechanical analysishierarchical microstructuresmultiphysics locally exact homogenization theorymultiscale homogenizationTechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 187-200 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	nb3sn filaments thermal conductivity thermomechanical analysis hierarchical microstructures multiphysics locally exact homogenization theory multiscale homogenization Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
spellingShingle	nb3sn filaments thermal conductivity thermomechanical analysis hierarchical microstructures multiphysics locally exact homogenization theory multiscale homogenization Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Zhao Xiaoyu Wang Guannan Chen Qiang Duan Libin Tu Wenqiong An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments
description	A comprehensive study of the multiscale homogenized thermal conductivities and thermomechanical properties is conducted towards the filament groups of European Advanced Superconductors (EAS) strand via the recently proposed Multiphysics Locally Exact Homogenization Theory (LEHT). The filament groups have a distinctive two-level hierarchical microstructure with a repeating pattern perpendicular to the axial direction of Nb3Sn filament. The Nb3Sn filaments are processed in a very high temperature between 600 and 700°C, while its operation temperature is extremely low, −269°C. Meanwhile, Nb3Sn may experience high heat flux due to low resistivity of Nb3Sn in the normal state. The intrinsic hierarchical microstructure of Nb3Sn filament groups and Multiphysics loading conditions make LEHT an ideal candidate to conduct the homogenized thermal conductivities and thermomechanical analysis. First, a comparison with a finite element analysis is conducted to validate effectiveness of Multiphysics LEHT and good agreement is obtained for the homogenized thermal conductivities and mechanical and thermal expansion properties. Then, the Multiphysics LEHT is applied to systematically investigate the effects of volume fraction and temperature on homogenized thermal conductivities and thermomechanical properties of Nb3Sn filaments at the microscale and mesoscale. Those homogenized properties provide a full picture for researchers or engineers to understand the Nb3Sn homogenized properties and will further facilitate the material design and application.
format	article
author	Zhao Xiaoyu Wang Guannan Chen Qiang Duan Libin Tu Wenqiong
author_facet	Zhao Xiaoyu Wang Guannan Chen Qiang Duan Libin Tu Wenqiong
author_sort	Zhao Xiaoyu
title	An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments
title_short	An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments
title_full	An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments
title_fullStr	An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments
title_full_unstemmed	An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments
title_sort	effective thermal conductivity and thermomechanical homogenization scheme for a multiscale nb3sn filaments
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/57a4ac536fc44592a9bdc8bf64c71a83
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_version_	1718371536229892096

An effective thermal conductivity and thermomechanical homogenization scheme for a multiscale Nb3Sn filaments

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