2-2-3 陽解法を用いた4元系メタンハイドレート堆積物に対するフーリエ熱伝導モデル(2-2 ガスハイドレート1,Session 2 天然ガス・メタンハイドレート等,研究発表)

概要

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A new calculation method was proposed for heat transfer in four-component sediment containing methane hydrate. The method was based on explicit numerical solution technique for Fourier type heat transfer. In the model, 36 x 36 sites with some different thermal conductivity were assumed. Then, the temperature at the cross section was calculated from vertical and horizontal thermal conductivity, which was evaluated from averaged ones of the neighboring sites. Sand, methane hydrate, water, and gaseous methane were randomly distributed in sites according to volume fraction of artificial sediment sample. At steady state, an apparent thermal conductivity similar to experimental on was obtained. At non-steady state, it is proven that the distribution of sand particle is affect on the heat transfer in sediment.
2010-08-02