放射熱伝達問題の閉空間モデル化の理論

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書誌事項

タイトル別名
  • THEORY ON MODELING ENCLOSURE IN RADIANT HEAT TRANSFER PROBLEM
  • ホウシャ ネツ デンタツ モンダイ ノ ヘイクウカン モデルカ ノ リロン

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説明

It is difficult to treat with how the radiant heat transfers inside buildings and urban spaces, because of not only including atmospheric radiation outdoors but also complex space figures and surface materials. In the paper a theory on modeling enclosure is discussed to let the problem simple and the radiant transport function is shown to be effective in developing the theory. At first, the reciprocal rule on the radiant transport function is introduced based on those of scattering, reflecting and transferring straight in the process of radiant transfer. That is useful in making the complexity of the problem reduce. A partially opened space is considered to be an enclosure, setting a supposed boundary plane. Besides, in the case of setting a supposed boundary plane in the enclosure, that is divided into two areas, the radiant transfer problem in the enclosure before separated becomes that in one between the enclosures after divided. At the same time, the reflection and the transmission regarding the supposed boundary plane should be considered, being expressed by the radiant transport functions. In such case as the enclosure having complex figure, the enclosure is changed to the more simple model with repeating the application of the supposed boundary plane. In general, the reflection and the transmission at the supposed boundary plane should be approximated for modeling enclosure in radiant transfer problem.

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