Journal of Applied Mathematics

  • J. Appl. Math.
  • Volume 2013, Special Issue (2013), Article ID 760378, 8 pages.

Thermal Diffusivity Identification of Distributed Parameter Systems to Sea Ice

Liqiong Shi, Zhijun Li, Enmin Feng, Yila Bai, and Yu Yang

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A method of optimal control is presented as a numerical tool for solving the sea ice heat transfer problem governed by a parabolic partial differential equation. Taken the deviation between the calculated ice temperature and the measurements as the performance criterion, an optimal control model of distributed parameter systems with specific constraints of thermal properties of sea ice was proposed to determine the thermal diffusivity of sea ice. Based on sea ice physical processes, the parameterization of the thermal diffusivity was derived through field data. The simulation results illustrated that the identified parameterization of the thermal diffusivity is reasonably effective in sea ice thermodynamics. The direct relation between the thermal diffusivity of sea ice and ice porosity is physically significant and can considerably reduce the computational errors. The successful application of this method also explained that the optimal control model of distributed parameter systems in conjunction with the engineering background has great potential in dealing with practical problems.

Article information

J. Appl. Math., Volume 2013, Special Issue (2013), Article ID 760378, 8 pages.

First available in Project Euclid: 14 March 2014

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Shi, Liqiong; Li, Zhijun; Feng, Enmin; Bai, Yila; Yang, Yu. Thermal Diffusivity Identification of Distributed Parameter Systems to Sea Ice. J. Appl. Math. 2013, Special Issue (2013), Article ID 760378, 8 pages. doi:10.1155/2013/760378.

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