002 植生内の微気象解析のための1次元数値モデル(環境シミュレーション技術)

概要

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The complex relationships of the momentum, heat, and water vapor within and above plant canopy have many important practical implications in micrometeorology, as well as in other areas, and have been evaluated by the micrometeorology model and observation in the plant canopy. In the present work, the one-dimensional plant-canopy model applied two turbulence models : one is k-ε model with consideration to vegetation resistance and the other is the turbulence model which is not considered vegetation resistance into the turbulence length scale. Furthermore, the radiation distributions of the plant canopy layers were calculated by the 2-stream model. In the purpose of this study, the model evaluates the relationships of the momentum, heat, and water vapor between the vegetation and the atmosphere. By comparing observed data of the planetary boundary layer collected in a deciduous forest in Pennsylvania, USA with the simulation result, it was assured that good applicability of k-ε model which is considered vegetation resistance. Therefore, according to the result of one-dimensional plant canopy model, it was found that condition of vegetation area density profile affected directly air flow within and above the plant canopy.
一般社団法人日本機械学会の論文
2001-07-09