Frequencies of Transverse and Longitudinal Oscillations in Supersonic Cavity Flows

Table 1

Strouhal numbers of pressure oscillations resulting from feedback mechanism for .

(a) Equation (3) (longitudinal oscillation)

St (Cal.)	0.24	0.57	0.89	1.21	1.53
St (Exp.)	—	—	0.88 (St4)	—	—

(b) Equation (4) (transverse oscillation)

St (Cal.)	0.24	0.54	0.64	0.83	0.93	1.13	1.23	1.52
St (Exp.)	—	—	0.64 (St2)	0.83 (St3)	—	1.15 (St6)	1.25 (St7)	—