Applications of Koopman Mode Decomposition to Modeling of Heat Transfer Dynamics in Building Atriums-I --Effective Heat Diffusion by Small-scale Air Movement--

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Other Title
  • ビル内アトリウムの熱移動モデリングへのクープマンモード分解の適用-I --小スケール流速場による有効熱拡散--

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Abstract

We develop a methodology for modeling of heat transfer dynamics of building atriums based on observational data on temperature and air-conditioning system. We focus on the phenomenon of heat transfer mainly due to the air movement inside a practically-used atrium, where the air slowly moves on a length-scale smaller than the distance between rooms. The heat transfer is modeled as a two-dimensional heat diffusion equation with an effective diffusion coefficient. The coefficient is identified based on a spatio-temporal oscillatory pattern extracted from measurement data via Koopman mode decomposition. The identified coefficient is verified with the characteristic numbers of fluid flow in the atrium and its architectural geometry. In the companion paper [Y. Kono, Y. Susuki, and T. Hikihara, Trans. SICE (53-2)], we will consider the heat transfer due to the air movement over the length-scale of the distance between rooms.

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Details 詳細情報について

  • CRID
    1050564285805292288
  • NII Article ID
    120006353872
  • NII Book ID
    AN00072392
  • ISSN
    04534654
  • HANDLE
    2433/227562
  • Text Lang
    ja
  • Article Type
    journal article
  • Data Source
    • IRDB
    • CiNii Articles

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