Optimization-based design of heat flux manipulation devices with emphasis on fabricability

Abstract In this work, we present a new method for the design of heat flux manipulating devices, with emphasis on their fabricability. The design is obtained as solution of a nonlinear optimization problem where the objective function represents the given heat flux manipulation task, and the design...

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Autores principales:	Ignacio Peralta, Víctor D. Fachinotti
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7bdec907a32443fe8957bad06c4ef973
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spelling	oai:doaj.org-article:7bdec907a32443fe8957bad06c4ef9732021-12-02T16:06:07ZOptimization-based design of heat flux manipulation devices with emphasis on fabricability10.1038/s41598-017-06565-62045-2322https://doaj.org/article/7bdec907a32443fe8957bad06c4ef9732017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06565-6https://doaj.org/toc/2045-2322Abstract In this work, we present a new method for the design of heat flux manipulating devices, with emphasis on their fabricability. The design is obtained as solution of a nonlinear optimization problem where the objective function represents the given heat flux manipulation task, and the design variables define the material distribution in the device. In order to facilitate the fabrication of the device, the material at a given point is chosen from a set of predefined metamaterials. Each candidate material is assumed to be a laminate of materials with high conductivity contrast, so it is a metamaterial with a highly anisotropic effective conductivity. Following the discrete material optimization (DMO) approach, the fraction of each material at a given finite element of the mesh is defined as a function of continuous variables, which are ultimately the design variables. This DMO definition forces the fraction of each candidate to tend to either zero or one at the optimal solution. As an application example, we designed an easy-to-make device for heat flux concentration and cloaking.Ignacio PeraltaVíctor D. FachinottiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ignacio Peralta Víctor D. Fachinotti Optimization-based design of heat flux manipulation devices with emphasis on fabricability
description	Abstract In this work, we present a new method for the design of heat flux manipulating devices, with emphasis on their fabricability. The design is obtained as solution of a nonlinear optimization problem where the objective function represents the given heat flux manipulation task, and the design variables define the material distribution in the device. In order to facilitate the fabrication of the device, the material at a given point is chosen from a set of predefined metamaterials. Each candidate material is assumed to be a laminate of materials with high conductivity contrast, so it is a metamaterial with a highly anisotropic effective conductivity. Following the discrete material optimization (DMO) approach, the fraction of each material at a given finite element of the mesh is defined as a function of continuous variables, which are ultimately the design variables. This DMO definition forces the fraction of each candidate to tend to either zero or one at the optimal solution. As an application example, we designed an easy-to-make device for heat flux concentration and cloaking.
format	article
author	Ignacio Peralta Víctor D. Fachinotti
author_facet	Ignacio Peralta Víctor D. Fachinotti
author_sort	Ignacio Peralta
title	Optimization-based design of heat flux manipulation devices with emphasis on fabricability
title_short	Optimization-based design of heat flux manipulation devices with emphasis on fabricability
title_full	Optimization-based design of heat flux manipulation devices with emphasis on fabricability
title_fullStr	Optimization-based design of heat flux manipulation devices with emphasis on fabricability
title_full_unstemmed	Optimization-based design of heat flux manipulation devices with emphasis on fabricability
title_sort	optimization-based design of heat flux manipulation devices with emphasis on fabricability
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/7bdec907a32443fe8957bad06c4ef973
work_keys_str_mv	AT ignacioperalta optimizationbaseddesignofheatfluxmanipulationdeviceswithemphasisonfabricability AT victordfachinotti optimizationbaseddesignofheatfluxmanipulationdeviceswithemphasisonfabricability
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Optimization-based design of heat flux manipulation devices with emphasis on fabricability

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