The study is aimed at determining the position of the laminar-turbulent transition in subsonic and transonic two-dimensional boundary layers with the use of a novel software package LOTRAN 2.0 developed by the authors. The package is based on the e^N-method and employs numerical data of numerical simulations of the laminar flow performed by standard gas-dynamic software systems based on the Reynolds-averaged Navier-Stokes equations. As an example, the flow past a flat plate is considered. The good agreement of the computed and experimental data on the laminar-turbulent transition location is demonstrated. New data on the laminar-turbulent transition in the boundary layer on a flat plate for transonic flow regimes are obtained.

中文翻译：

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亚音速和跨音速流过平板的数值模拟中层流湍流过渡位置的确定

这项研究旨在使用作者开发的新型软件包LOTRAN 2.0确定亚音速和跨音速二维边界层中层流湍流的位置。该软件包基于e ^N方法，并采用标准气体动力软件系统基于Reynolds平均Navier-Stokes方程进行的层流数值模拟的数值数据。例如，考虑通过平板的流动。证明了计算结果和实验数据在层流湍流过渡位置上的良好一致性。获得有关跨音速流态的平板边界层中层流湍流转变的新数据。