Performance Improvement of a Centrifugal Compressor by Passive Means

Table 3

Effect of configuration on performance.

τ (%)	Details of configuration	𝜓max	𝜙 at 𝜓max	𝜂 at 𝜓max	𝜂max	𝜙 at 𝜂max
2.2	Without passive means	1.188	0.169	44.5	47.1	0.217
2.2	TG^* only	1.173	0.124	39.0	48.2	0.262
2.2	TG only	1.191	0.132	38.8	47.6	0.250
2.2	TG + TG^**	1.156	0.143	37.8	45.7	0.217
2.2	TG + PS	1.205	0.135	40.0	50.0	0.207
2.2	PS only	1.204	0.139	44.8	49.7	0.237
5.1	Without passive means	1.173	0.156	39.9	45.4	0.237
5.1	TG only	1.172	0.121	34.7	48.0	0.250
5.1	PS only	1.186	0.109	34.6	49.4	0.241
5.1	TG + PS	1.192	0.146	40.9	49.3	0.237
7.9	Without passive means	1.153	0.121	31.9	45.5	0.230
7.9	TG only	1.167	0.113	35.2	44.9	0.241
7.9	PS only	1.185	0.101	33.5	48.6	0.222
7.9	TG + PS	1.170	0.128	33.9	46.8	0.248
7.9	TG^***	1.157	0.124	38.5	45.2	0.225