WIAS Preprint No. 1789, (2013)

Parameter identification in non-isothermal nucleation and growth processes



Authors

  • Hömberg, Dietmar
  • Lu, Shuai
  • Sakamoto, Kenichi
  • Yamamoto, Masahiro

2010 Mathematics Subject Classification

  • 80A22 49K20 49N45

Keywords

  • Phase transition, nucleation and growth, inverse problem

Abstract

We study non-isothermal nucleation and growth phase transformations, which are described by a generalized Avrami model for the phase transition coupled with an energy balance to account for recalescence effects. The main novelty of our work is the identification of temperature dependent nucleation rates. We prove that such rates can be uniquely identified from measurements in a subdomain and apply an optimal control approach to develop a numerical strategy for its computation.

Appeared in

  • Inverse Problems, 30 (2014) pp. 035003/1--035003/24.

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