Investigation of Flow Field at the Inlet of a Turbocharger Compressor Using Digital Particle Image Velocimetry
| Autor: | Keith Miazgowicz, Ahmet Selamet, Philip Keller, Deb Banerjee, Rick Dehner, John Shutty, Kevin V. Tallio |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
geography
geography.geographical_feature_category Materials science Mechanical Engineering Mechanical engineering 02 engineering and technology Inlet 01 natural sciences Flow field 010305 fluids & plasmas 020303 mechanical engineering & transports 0203 mechanical engineering Particle image velocimetry 0103 physical sciences Gas compressor Turbocharger |
| Zdroj: | Journal of Turbomachinery. 141 |
| ISSN: | 1528-8900 0889-504X |
| DOI: | 10.1115/1.4044608 |
| Popis: | The flow field at the inlet of a turbocharger compressor has been studied through stereoscopic particle image velocimetry (SPIV) experiments under different operating conditions. It is found that the flow field is quite uniform at high mass flow rates; but as the mass flow rate is reduced, flow reversal from the impeller is observed as an annular ring at the periphery of the inlet duct. The inception of flow reversal is observed to occur in the mid-flow operating region, near peak efficiency, and corresponds to an incidence angle of about 15.5 deg at the inducer blade tips at all tested speeds. This reversed flow region is marked with high tangential velocity and rapid fluctuations. It grows in strength with reducing mass flow rate and imparts some of its angular momentum to the forward flow due to mixing. The penetration depth of the reversed flow upstream from the inducer plane is found to increase quadratically with decreasing flow rate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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