Research Article
Performance Improvement of a Centrifugal Compressor by Passive Means
Table 4
Effect of tip clearance on and .
| Details of configuration | τ (%) | | at | at | | at |
| | 2.2 | 1.188 | 0.169 | 44.5 | 47.1 | 0.217 | Without passive means | 5.1 | 1.173 | 0.156 | 39.9 | 45.4 | 0.237 | | 7.9 | 1.153 | 0.121 | 31.9 | 45.5 | 0.230 |
| | 2.2 | 1.191 | 0.132 | 38.8 | 47.6 | 0.250 | TG only | 5.1 | 1.172 | 0.121 | 34.7 | 48.0 | 0.250 | | 7.9 | 1.167 | 0.113 | 35.2 | 44.9 | 0.241 |
| | 2.2 | 1.204 | 0.139 | 44.8 | 49.7 | 0.237 | PS only | 5.1 | 1.186 | 0.109 | 36.6 | 49.4 | 0.241 | | 7.9 | 1.185 | 0.101 | 33.5 | 48.6 | 0.222 |
| | 2.2 | 1.205 | 0.135 | 40.0 | 50.0 | 0.207 | TG + PS | 5.1 | 1.192 | 0.146 | 40.9 | 49.3 | 0.237 | | 7.9 | 1.170 | 0.128 | 33.9 | 46.8 | 0.248 |
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