Stability of a subsonic boundary layer with heat supply into its narrow band is studied. The maximum length of the stable boundary layer in the case of heat supply is found to be approximately three times smaller as compared to the case of a thermally insulated wall without heat supply. The frequency range of disturbances and their growth rates are approximately doubled. In contrast to the case without heat supply, three-dimensional disturbances are the most rapidly growing disturbances. In the case of a heated wall, the growth rate of disturbances decreases after heat supply into the boundary layer, which may lead to an increase in the length of the laminar region of the boundary layer.

中文翻译：

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边界层窄带的供热对其稳定性的影响

研究了在其窄带中供热的亚音速边界层的稳定性。发现在供热情况下稳定边界层的最大长度比没有供热的隔热墙的情况小大约三倍。扰动的频率范围及其增长率大约翻了一番。与没有供热的情况相比，三维扰动是增长最快的扰动。在加热壁的情况下，在向边界层供热后扰动的增长速率降低，这可能导致边界层层流区域的长度增加。