Geometrical design of thermoelectric generators based on topology optimization

A. Takezawa, M. Kitamura

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

This paper discusses an application of the topology optimization method for the design of thermoelectric generators. The proposed methodology provides the optimized geometry in accordance with various arbitrary conditions such as the types of materials, the volume of materials, and the temperature and shape of the installation position. By considering the coupled equations of state for the thermoelectric problem, we introduce an analytical model subject to these equations, which mimics the closed circuit composed of thermoelectric materials, electrodes, and a resistor. The total electric power applied to the resistor and the conversion efficiency are formulated as objective functions to be optimized. The proposed optimization method for thermoelectric generators is implemented as a geometrical optimization method using the solid isotropic material with penalization method used in topology optimizations. Simple relationships are formulated between the density function of the solid isotropic material with penalization method and the physical properties of the thermoelectric material. A sensitivity analysis for the objective functions is formulated with respect to the density function and the adjoint equations required for calculating it. Depending on the sensitivity, the density function is updated using the method of moving asymptotes. Finally, numerical examples are provided to demonstrate the validity of the proposed method.

Original languageEnglish
Pages (from-to)1363-1392
Number of pages30
JournalInternational Journal for Numerical Methods in Engineering
Volume90
Issue number11
DOIs
Publication statusPublished - 2012 Jun 15
Externally publishedYes

Keywords

  • Finite element method
  • Multiphysics
  • Sensitivity analysis
  • Thermoelectricity
  • Topology optimization

ASJC Scopus subject areas

  • Numerical Analysis
  • Engineering(all)
  • Applied Mathematics

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