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首页> 外文期刊>Annalen der Meteorologie >TRAPPED LEE WAVE INTERFERENCE IN PRESENCE OF SURFACE FRICTION
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TRAPPED LEE WAVE INTERFERENCE IN PRESENCE OF SURFACE FRICTION

机译：存在表面摩擦时的陷波李波干扰

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摘要

Lee-wave interference over twin peaks in the presence of a frictional boundary layer is investigated by means of idealized high-resolution two-dimensional simulations with the NRL COAMPS model. The interference is examined under linear to highly nonlinear flow regimes. The results show that the pattern of positive and negative interference, evident in the wave amplitude and rotor strength, is consistent with the predictions of linear interference theory. Interference is found to most significantly affect the flow in the lee of the downstream ridge, preventing boundary-layer separation there under conditions of destructive interference and amplifying rotor strength under constructive interference in different flow regimes. Only under strongly nonlinear conditions is the rotor strength amplified by constructive interference beyond that obtained in the lee of a single mountain.
机译：通过使用NRL COAMPS模型的理想化高分辨率二维模拟，研究了存在摩擦边界层时双峰的Lee波干扰。在线性到高度非线性的流动状态下检查干扰。结果表明，在波幅和转子强度方面明显的正，负干扰模式与线性干扰理论的预测是一致的。发现干扰最显着地影响下游脊的回风，在破坏性干扰条件下防止边界层分离，并在不同流态下在建设性干扰条件下放大转子强度。仅在强非线性条件下，转子的强度才会因相长干涉而超出单个山的回风中获得的强度。

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