Optimization-based design of a heat flux concentrator

Peralta, Ignacio; Fachinotti, Víctor D.; Ciarbonetti, Ángel A.

doi:10.1038/srep40591

Cited by 30 publications

(43 citation statements)

References 21 publications

(30 reference statements)

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“…5a performs almost as well as the hard-to-make device we designed using a continuous metamaterial distribution 9 (where the thickness of the alternating copper and PDMS layers and their orientation vary throughout the device), specially for concentration. This is clearly apparent from Fig.…”

Section: Application To a Heat Concentration And Cloaking Problemmentioning

confidence: 95%

“…Now, let us apply the current methodology for the design of a device for heat concentration and cloaking as alternative to that one we designed using an optimization-based continuous metamaterial distribution 9 as well as to that one designed by Chen and Lei 6 using the transformation-based approach. Figure 4a shows the domain of analysis Ω , originally filled with 40% -nickel steel, with isotropic thermal conductivity k ns = 10 Wm −1 K −1 .…”

Section: Application To a Heat Concentration And Cloaking Problemmentioning

confidence: 99%

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

Peralta

Fachinotti

2017

Sci Rep

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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.

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Section: Application To a Heat Concentration And Cloaking Problemmentioning

confidence: 95%

Section: Application To a Heat Concentration And Cloaking Problemmentioning

confidence: 99%

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

Peralta

Fachinotti

2017

Sci Rep

Self Cite

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“…Recently, without appealing to coordinates transformation, a heat flux concentrator was designed by computationally solving an optimization problem . This is another example of the application of optimization techniques in the design of thermal metamaterials and allows the solution of arbitrary heat flux manipulation problems.…”

Section: Thermal Concentration Convergent Nature Of Heat?mentioning

confidence: 99%

A Brief Review on Thermal Metamaterials for Cloaking and Heat Flux Manipulation

2019

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Progress in material science has allowed the control of different physical fields in a manner that would be unachievable with ordinary materials. The development of engineered materials (the so‐called metamaterials) to control the conductive heat flux has revolutionized the manner of manipulating thermal energy and allowed the possibility of guiding the heat flux in ways difficult to accept for human intuition. Herein, a brief review regarding the recent progress and developments in thermal metamaterials conceived to perform several conductive heat flux manipulation tasks is provided. Deeply theoretical discussions concerning design methodologies are left a side, and the focus is made on the design and manufacturing feasibility of metamaterials for thermal cloaking and camouflage, heat flux concentration, and inversion, among other applications that lead to the next generation of thermal devices.

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“…The former category is related to the design of material properties − thermal expansion even beyond the natural limits; for example, negative thermal expansion with an extremely high value . The latter has focused on thermal engineering − directional control of thermal energy by rationally arranged microstructures or temperature‐responsive materials to provide thermal functions such as thermal cloaking, focusing, and reversal . Combining the two categories, one may provide a solution for the design of passive thermal switch using both thermal deformation and the control of heat flow.…”

Section: Introductionmentioning

confidence: 99%

A Passive Thermal Switch with Kirigami‐Inspired Mesostructures

Heo

Bao

et al. 2019

Adv Eng Mater

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The objective of this work is to design a passive thermal switch with Kirigami-inspired architected materials composed of bilayer hinges and to analyze thermomechanical and thermal performance at the ON/OFF states based on a composition of materials and geometry of metamaterials. Analytical models are constructed to determine the thermal deformation and heat transport of the metamaterial, followed by finite element-based simulations. A two-step design approach À i) selection of multi-materials and ii) geometric modification of mesostructures provides a robust method for the design of a passive thermal switch with Kirigami-inspired metamaterials. The mesostructures designed have potential as a passive thermal switch enabling to engineer a large thermal deformation, a small thermal resistance, and a sizable thermal switch ratio. With a systematic approach, this work demonstrates that Kirigami structures with multi-materials can be potentially used for a tool of thermal transport.

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Optimization-based design of a heat flux concentrator

Cited by 30 publications

References 21 publications

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

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

A Brief Review on Thermal Metamaterials for Cloaking and Heat Flux Manipulation

A Passive Thermal Switch with Kirigami‐Inspired Mesostructures

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