基于嵌套网格变几何轴对称进气道非定常数值模拟

doi:10.7527/S1000-6893.2022.27028

Abstract

Abstract: The axisymmetric inlet can improve the performance of the whole operating range through the scheme of translating the whole spike. The unsteady flow field of the dynamic regulation process of axisymmetric inlet was simulated by the overset grid approach in this study. The changing rule of start performance and the total pressure recovery coefficient in the dynamic regulation process of the inlet was studied through simulation. The results show that the inlet terminal shock wave moves forward with the increase of the anti-back pressure under the steady condition. With the back pressure exceeding a critical level, the inlet remains unstarted. In the unsteady regulation simulation, the inlet works in the starting mode with slightly lower performance.

Key words: overset grid, variable geometry, dynamic regulation, axisymmetric inlet, unsteady

CLC Number:

V221.1

LUO Jiong, LI Zhihong, CHEN Ke, XIANG Huan. Unsteady numerical simulation of variable geometry axisymmetric inlet based on overset grid[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(12): 627028-627028.

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Unsteady numerical simulation of variable geometry axisymmetric inlet based on overset grid

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