2013 Fiscal Year Final Research Report
Suppression of Cavitation Instabilities in an Inducer by a Backflow Recirculator
| Project/Area Number |
23760159
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | キャビテーション / インデューサ / ケーシングトリートメント / 動特性 |
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| Research Abstract |
In turbopump inducers for rocket engines, cavitation instabilities occur and cause shaft vibrations. We examined various types of casing treatments for suppressing the cavitation instabilities. The casing treatment which consisted of a circumferential groove with some ribs as a swirl breaker could suppress the cavitation instabilities effectively. The dynamic characteristics of cavitation, which relate to the occurrence of cavitation instabilities, were measured and clarified.
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