To provide a method for analyzing fluid around a rotational body that can calculate the time average value of the physical quantity of fluid.SOLUTION: The method includes the steps of: acquiring a spacial model having a rotation calculation lattice group A, which shows the space between a virtual boundary surface L and a rotational body 2, and having a static calculation lattice group B, which shows the space outer than the virtual boundary surface L (S100); setting a storage calculation lattice group C in the space between a rotational body 2 and the virtual boundary surface L (S101); executing a fluid analysis operation of operating for each calculation lattice the physical quantity of the fluid, while fixing the position of the static calculation lattice group B and rotating the rotation calculation lattice group A around a rotational axis 2C (S102); copying the physical quantity of the calculation lattice forming the rotation calculation lattice group A calculated by the fluid analysis operation (S103); and calculating the time average of the physical quantity of the storage calculation lattice group C and of the physical quantity of the static calculation lattice group B (S104).SELECTED DRAWING: Figure 5

    【課題】流体の物理量の時間平均値を算出可能な回転体周囲の流体解析方法を提供する。【解決手段】方法は、仮想境界面Lと回転体2との間の空間を表す回転計算格子群Aと、仮想境界面Lよりも外側の空間を表す静止計算格子群Bと、を有する空間モデルを取得するステップ(S100)と、回転体2と仮想境界面Lとの間の空間に記憶用計算格子群Cを設定するステップ(S101)と、静止計算格子群Bの位置を固定し、回転計算格子群Aを回転軸2C回りに回転させながら流体の物理量を計算格子毎に演算する流体解析演算を実行するステップ(S102)と、流体解析演算により算出された回転計算格子群Aを構成する計算格子の物理量を、記憶用計算格子群Cにおける対応する計算格子にコピーするステップ(S103)と、記憶用計算格子群C及び静止計算格子群Bの物理量について時間平均値を算出するステップ(S104)と、を含む。【選択図】図5


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    Title :

    METHOD FOR ANALYZING FLUID AROUND ROTATIONAL BODY, FLUID ANALYZER, AND PROGRAM


    Additional title:

    回転体周囲の流体解析方法、流体解析装置、及びプログラム


    Contributors:

    Publication date :

    2019-01-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60C VEHICLE TYRES , Fahrzeugreifen



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