市販CFDソフトウェアによる 急峻な3次元孤立峰を対象とした気流場解析

摘要

第一著者は，LES乱流モデルに基づいたRIAM-COMPACT®" (リアムコンパクト)と称する数値風況診 断技術の開発を進めている.RIAM-COMPACT®は， 九州大学発ベンチヤー企業の(株)リアムコンパクト力、(株)産学连携機 構九州から独占的ライセンス使用許諾を受けている. 主に国内の風力業界(民間の風力事業者，自治体， 風車メーカーなど)に対して普及に努めている.%The present study compared the prediction accuracy of two CFD software packages for simulating a flow around a three-dimensional, isolated hill with a steep slope: 1)Meteodyn WT (turbulence model: k-L RANS), which is one of the leading commercially available CFD software packages in the wind power industry and 2) RIAM-COMPACT® (turbulence model: the standard Smagorinsky LES), which has been developed by the lead author of the present paper. Although the Reynolds number settings differed between the simulation with Meteodyn WT and that with RIAM-COMPACT®, distinct differences in the flow patterns were identified in the vicinity of the isolated hill (especially downstream of the isolated hill) between the flows simulated by the two CFD software packages.