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通过对二维压气机叶栅叶片表面附面层流态的数值模拟分析,研究了在不同来流马赫数和冲角下,叶片表面层流附面层向紊流附面层的转捩过程,转捩区域的大小等。归纳分析了部分来流条件对转捩过程的影响机制。结果表明:来流马赫数和冲角对转捩起始点和结束点的位置,即转捩所占区域的大小有重要影响。研究工作取得的进展不仅为进一步从机理上深刻认识来流条件对叶片表面附面层流态的影响机理提供了一定的科学依据,而且对今后指导叶片表面附面层流态模似实验工作的开展具有重要参考价值。
Through the numerical simulation of the laminar flow on the surface of two-dimensional compressor cascade, the laminar flow of laminar laminar flow to the turbulent laminar flow at different flow Mach numbers and angles was studied. , Turn around the size of the area. Summarizes the part of the flow conditions on the transition process of the mechanism. The results show that the Mach number and angle of arrival have an important influence on the position of the starting point and the ending point of the transition, ie, the size of the region occupied by the transition. The progress made in the research not only provides a scientific basis for further understanding of the influence mechanism of flow conditions on the flow pattern of the lamina surface on the blade surface, but also provides a scientific basis for further simulating the flow regime of the lamina surface on the leaf surface in the future To carry out an important reference value.