Investigation of the Effects of Length to Depth Ratio on Open Supersonic Cavities Using CFD and Proper Orthogonal Decomposition

Table 6

Energy content of each mode for all cavity configurations.

Energy content of each mode for all cavity configurations %
Mode number	𝐿/𝐷=1		𝐿/𝐷=3		𝐿/𝐷=5.07		𝐿/𝐷=7.6		𝐿/𝐷=10
1	94.33	94.33	67.02	67.02	70.65	70.65	60.87	60.87	46.38	46.38
2	—	2.88	20.60	20.60	21.19	21.19	18.15	18.15	31.06	31.06
3	—	1.64	4.86	4.86	2.63	2.63	7.12	7.12	12.15	12.15
4	—	0.56	3.10	3.10	1.54	1.54	5.17	5.17	4.2	4.2
5	—	—	—	0.090	—	0.96	2.16	2.16	3.02	3.02
6	—	—	—	0.078	—	0.61	1.86	1.86	—	1.67
7	—	—	—	0.067	—	0.58	—	1.14	—	0.69
8	—	—	—	0.048	—	0.32	—	0.71	—	—
9	—	—	—	0.030	—	0.23	—	0.55	—	—
10	—	—	—	0.0026	—	0.18	—	0.40	—	—
11	—	—	—	0.0020	—	0.15	—	0.36	—	—
12	—	—	—	—	—	0.13	—	0.30	—	—
13	—	—	—	—	—	—	—	0.23	—	—
14	—	—	—	—	—	—	—	0.17	—	—
Total energy content %	94.33	99.41	95.58	99.17	96.01	99.18	95.33	99.19	96.82	99.18