A numerical solution of the Navier–Stokes equations describing the instability of a two-dimensional subsonic flow about a flat plate is presented. It is obtained with the 16th-order multioperators-based scheme without introducing artificial exciters. It shows how small numerical disturbances produced by the scheme generate downstream from the leading edge a succession of wave packets formed by the Tollmien–Schlichting waves. When travelling downstream, the packets demonstrate high amplification rates and the occurrence of separation bubbles. The details of their coming into being, the spatial–temporal progress and the spectra are described.

中文翻译：

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通过无激振器高保真数值模拟观察亚音速平板边界层中托尔米恩-施里希廷波的产生和增长

纳维-斯托克斯方程的数值解描述了关于平板的二维亚音速流动的不稳定性。它是通过基于 16 阶多算子的方案获得的，无需引入人工激励器。它显示了该方案产生的微小数值扰动如何从前缘向下游产生由 Tollmien-Schlichting 波形成的一系列波包。当向下游行进时，数据包表现出高放大率和分离气泡的发生。描述了它们形成的细节，时空进展和光谱。