On The Birth and Evolution of Disturbances in Three-Dimensional Boundary Layers
On The Birth and Evolution of Disturbances in Three-Dimensional Boundary Layers
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DOI：
10.1007/978-94-009-1700-2_24
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
F. Bertolotti
中科院分区：
文献类型：
--
作者：
F. Bertolotti
研究了三维边界层中扰动的演化，从表面粗糙度的产生开始，一直持续到强非线性状态下的幅值饱和状态。由孤立表面粗糙度引起的扰动的产生是通过一种新的技术来模拟的，该技术结合了基流的流向变化。随后的线性和非线性演化由抛物线化稳定性方程（PSE）来模拟。记录了非锁相上游和下游旅行模式的增长。
The evolution of disturbances in three-dimensional boundary layers, starting from their generation by surface roughness, and continuing into the amplitude-saturated states in the strongly nonlinear regime is investigated. The birth of disturbances due to isolated surface roughness is modeled by a new technique that incorporates streamwise changes of the base flow. The subsequent linear and nonlinear evolution is modeled by the parabolized stability equations (PSE). The growth of non-phase-locked upstream and downstream traveling modes is documented.