Details
| Original language | English |
|---|---|
| Title of host publication | 9th International Conference on Turbochargers and Turbocharging - Institution of Mechanical Engineers, Combustion Engines and Fuels Group |
| Pages | 293-306 |
| Number of pages | 14 |
| Publication status | Published - 2010 |
| Event | 9th International Conference on Turbochargers and Turbocharging - Westminster, London, United Kingdom (UK) Duration: 19 May 2010 → 20 May 2010 |
Publication series
| Name | 9th International Conference on Turbochargers and Turbocharging - Institution of Mechanical Engineers, Combustion Engines and Fuels Group |
|---|
Abstract
Experimental investigations on a turbocharger test stand and numerical simulations with CFD were carried out to better understand the loss mechanisms in turbocharger turbines for engine downsizing applications. This paper describes the tip-leakage flow mechanisms in small turbocharger turbines and the influences of the tip-gap losses on the turbine stage efficiency. In addition to the common mechanisms of scraping and tip-leakage, the so called "axial blow-by" is identified as another result of tip-leakage. It was found that the relative tip-leakage losses in small radial turbines increase only slightly with decreasing dimensions, while the total leakage losses show a severe and disproportional increase. Empirical correlations are suggested to estimate the tip-gap losses of radial turbines in preliminary design of turbochargers or engine applications.
ASJC Scopus subject areas
- Energy(all)
- Fuel Technology
- Engineering(all)
- Automotive Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
9th International Conference on Turbochargers and Turbocharging - Institution of Mechanical Engineers, Combustion Engines and Fuels Group. 2010. p. 293-306 (9th International Conference on Turbochargers and Turbocharging - Institution of Mechanical Engineers, Combustion Engines and Fuels Group).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Influence of tip-gap losses on the stage efficiency of downsizing turbocharger turbines
AU - Kammeyer, J.
AU - Natkaniec, C.
AU - Seume, J. R.
PY - 2010
Y1 - 2010
N2 - Experimental investigations on a turbocharger test stand and numerical simulations with CFD were carried out to better understand the loss mechanisms in turbocharger turbines for engine downsizing applications. This paper describes the tip-leakage flow mechanisms in small turbocharger turbines and the influences of the tip-gap losses on the turbine stage efficiency. In addition to the common mechanisms of scraping and tip-leakage, the so called "axial blow-by" is identified as another result of tip-leakage. It was found that the relative tip-leakage losses in small radial turbines increase only slightly with decreasing dimensions, while the total leakage losses show a severe and disproportional increase. Empirical correlations are suggested to estimate the tip-gap losses of radial turbines in preliminary design of turbochargers or engine applications.
AB - Experimental investigations on a turbocharger test stand and numerical simulations with CFD were carried out to better understand the loss mechanisms in turbocharger turbines for engine downsizing applications. This paper describes the tip-leakage flow mechanisms in small turbocharger turbines and the influences of the tip-gap losses on the turbine stage efficiency. In addition to the common mechanisms of scraping and tip-leakage, the so called "axial blow-by" is identified as another result of tip-leakage. It was found that the relative tip-leakage losses in small radial turbines increase only slightly with decreasing dimensions, while the total leakage losses show a severe and disproportional increase. Empirical correlations are suggested to estimate the tip-gap losses of radial turbines in preliminary design of turbochargers or engine applications.
UR - http://www.scopus.com/inward/record.url?scp=79959593769&partnerID=8YFLogxK
U2 - 10.1243/17547164C0012010023
DO - 10.1243/17547164C0012010023
M3 - Conference contribution
AN - SCOPUS:79959593769
SN - 9781907599156
T3 - 9th International Conference on Turbochargers and Turbocharging - Institution of Mechanical Engineers, Combustion Engines and Fuels Group
SP - 293
EP - 306
BT - 9th International Conference on Turbochargers and Turbocharging - Institution of Mechanical Engineers, Combustion Engines and Fuels Group
T2 - 9th International Conference on Turbochargers and Turbocharging
Y2 - 19 May 2010 through 20 May 2010
ER -