Steady state performance evaluation of variable geometry twin-entry turbine
This paper presents the results from an experimental investigation conducted on different turbine designs for an automotive turbocharger. The design progression was based on a commercial nozzleless unit that was modified into a variable geometry single and twin-entry turbine. The main geometrical pa...
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my.utm.293362019-03-25T08:07:02Z http://eprints.utm.my/id/eprint/29336/ Steady state performance evaluation of variable geometry twin-entry turbine Romagnoli, A. Martinez-Botas, R. F. Rajoo, Srithar TJ Mechanical engineering and machinery This paper presents the results from an experimental investigation conducted on different turbine designs for an automotive turbocharger. The design progression was based on a commercial nozzleless unit that was modified into a variable geometry single and twin-entry turbine. The main geometrical parameters were kept constant for all the configurations and the turbine was tested under steady flow conditions. A significant depreciation in efficiency was measured between the single and twin-entry configuration due to the mixing effects. The nozzleless unit provides the best compromise in terms of performance at different speeds. The twin-entry turbine was also tested under partial and unequal admissions. Based on the test results a method to determine the swallowing capacity under partial admission given the full admission map is presented. The test results also showed that the turbine swallowing capacity under unequal admission is linked to the full admission case. Elsevier Inc. 2011-04 Article PeerReviewed Romagnoli, A. and Martinez-Botas, R. F. and Rajoo, Srithar (2011) Steady state performance evaluation of variable geometry twin-entry turbine. International Journal of Heat and Fluid Flow, 32 (2). pp. 477-489. ISSN 0142-727X http://dx.doi.org/10.1016/j.ijheatfluidflow.2010.12.002 DOI:10.1016/j.ijheatfluidflow.2010.12.002 |
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TJ Mechanical engineering and machinery Romagnoli, A. Martinez-Botas, R. F. Rajoo, Srithar Steady state performance evaluation of variable geometry twin-entry turbine |
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This paper presents the results from an experimental investigation conducted on different turbine designs for an automotive turbocharger. The design progression was based on a commercial nozzleless unit that was modified into a variable geometry single and twin-entry turbine. The main geometrical parameters were kept constant for all the configurations and the turbine was tested under steady flow conditions. A significant depreciation in efficiency was measured between the single and twin-entry configuration due to the mixing effects. The nozzleless unit provides the best compromise in terms of performance at different speeds. The twin-entry turbine was also tested under partial and unequal admissions. Based on the test results a method to determine the swallowing capacity under partial admission given the full admission map is presented. The test results also showed that the turbine swallowing capacity under unequal admission is linked to the full admission case. |
format |
Article |
author |
Romagnoli, A. Martinez-Botas, R. F. Rajoo, Srithar |
author_facet |
Romagnoli, A. Martinez-Botas, R. F. Rajoo, Srithar |
author_sort |
Romagnoli, A. |
title |
Steady state performance evaluation of variable geometry twin-entry turbine |
title_short |
Steady state performance evaluation of variable geometry twin-entry turbine |
title_full |
Steady state performance evaluation of variable geometry twin-entry turbine |
title_fullStr |
Steady state performance evaluation of variable geometry twin-entry turbine |
title_full_unstemmed |
Steady state performance evaluation of variable geometry twin-entry turbine |
title_sort |
steady state performance evaluation of variable geometry twin-entry turbine |
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Elsevier Inc. |
publishDate |
2011 |
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http://eprints.utm.my/id/eprint/29336/ http://dx.doi.org/10.1016/j.ijheatfluidflow.2010.12.002 |
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1643648278914400256 |
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13.160551 |