The invention discloses an aircraft boundary layer instability characteristic detection method, device and equipment and a medium, and the method comprises the steps: assuming a shape function of a boundary layer disturbance wave of an aircraft lifting body, and decomposing the shape function into a fast variable and a slow variable; presetting a spanwise wave number to be optimized, and substituting the slow variable into the disturbance global stability equation to obtain a characteristic value equation; calculating a characteristic value and a characteristic function according to the characteristic value equation; judging whether the fast variable is stripped to the maximum extent or not, if so, terminating calculation, and if not, re-presetting the spanwise wave number to be optimized, substituting the slow variable into the disturbance global stability equation to obtain a characteristic value equation, and calculating a characteristic value and a characteristic function; and on the basis of the spanwise wave number to be optimized, the traversal frequency, the phase velocity and the flow direction position at the end of calculation, solving a characteristic value equation to obtain complete disturbance characteristic spectrum information. According to the method, the detection of the three-dimensional boundary layer characteristics of the aircraft can be completed only by analyzing slow variable information through a small number of grid points, and complete disturbance characteristic spectrum information is obtained.

    本发明公开了飞行器边界层失稳特征检测方法、装置、设备及介质,该方法包括假设飞行器升力体边界层扰动波的形状函数,并将形状函数分解为快变量和慢变量;预设待优化的展向波数,将慢变量代入扰动全局稳定性方程得到特征值方程;根据特征值方程计算特征值和特征函数;判断快变量是否已被最大限度剥离,若是,则计算终止,若否,重新预设待优化的展向波数,将慢变量代入扰动全局稳定性方程得到特征值方程,计算特征值和特征函数;基于计算终止时的待优化的展向波数,遍历频率、相速度和流向位置,求解特征值方程,得到完整的扰动特征谱信息。本发明只需少量网格点解析慢变量信息,即可完成飞行器三维边界层特征的检测,得到完整扰动特征谱信息。


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    Titel :

    Aircraft boundary layer instability feature detection method, device, equipment and medium


    Weitere Titelangaben:

    飞行器边界层失稳特征检测方法、装置、设备及介质


    Beteiligte:
    CHEN XI (Autor:in) / CHEN JIANQIANG (Autor:in) / YUAN XIANXU (Autor:in) / TU GUOHUA (Autor:in) / DONG SIWEI (Autor:in)

    Erscheinungsdatum :

    2022-02-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



    BOUNDARY LAYER CONTROL DEVICE OF AIRCRAFT

    INOUE FUJIO | Europäisches Patentamt | 2016

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    Boundary Layer Instability, Transition and Control

    Reshotko, E. / AIAA | British Library Conference Proceedings | 1994