Stability Analysis on the Supersonic Streamwise Corner Flow
The three-dimensional low along a streamwise corner formed by two vertically assembled plates is observed unstable.The Ma 4.5 self-similar solution is employed as the base flow and the Bi-Global stability analysis is conducted.Two series of modes are found unstable on the spectrum.The S series modes are unstable at higher angular frequency,and the the unstable F mode is found at low angular frequency.With the eigenvectors given,the unstable S series modes share the identical mechanism with the second Mach modes;the unstable mode is unique in the streamwise corner flow as its peak appears in the vicinity of the corner.Two unstable areas domainated by the unstable S and F modes exist in the neutral curve scheme.
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万方数据
维普
