Design and Numerical Analysis of a Forepart Rotation Vane for a Variable Nozzle Turbine
-
Dengfeng Yang
,
Ce Yang
Abstract
The influence of nozzle clearance on the flow field for a variable nozzle turbine, and moreover on the turbine stage performance was numerically investigated. Meanwhile, unsteady calculations were also performed to capture the shock waves which were induced by excessive acceleration of the exhaust gas. Aiming at improving the turbine stage performance and mitigating the shock waves, a forepart rotation vane was proposed and investigated in this work. The results indicated that by using the forepart rotation vane, the stage efficiency is increased by 6 % and the shock waves were eliminated successfully at small nozzle openings. Additionally, the intensity of pressure fluctuation that acts on the rotor blades was reduced by mitigation of clearance leakage flow and shock waves, which is beneficial for the reliability of rotor blades.
Funding statement: National Natural Science Foundation of China, (Grant/Award Number: ‘51276017’).
Acknowledgment
The authors would like to express their sincere gratitude to Dr. Eric Curtis and Dr. James Yi of Ford Motor Company for their help with this project. The authors would also like to thank the financial support of the National Natural Science Foundation of China (No.51276017) and Ford Motor Company.
References
1. Tsujita M, Niino S, Isizuka T, Kakinai A, Sato A. Advanced fuel economy in hino new P11C turbocharged and charge-cooled heavy duty diesel engine. SAE Technical Paper No 930272, 1993.10.4271/930272Search in Google Scholar
2. O’Connor G, Smith M. Variable nozzle turbochargers for passenger car applications. SAE Technical Paper 880121, 1988.10.4271/880121Search in Google Scholar
3. Hishikawa A, Okazaki Y, Busch P. Developments of variable area radial turbine for small turbochargers. SAE Technical Paper 880120, 1988.10.4271/880120Search in Google Scholar
4. Hawley JG, Wallace FJ, Cox A, Horrocks RW, Bird GL. Variable geometry turbocharging for lower emissions and improved torque characteristics. Proc Inst Mech Eng Part D J Automobile Eng 1999;213:145–159.10.1243/0954407991526766Search in Google Scholar
5. Minegishi H, Matsushita H, Sakakida M, Koike T. Development of a small mixed-Flow turbine for automotive turbochargers. ASME Paper No 95-GT-53, 1995.10.1115/95-GT-053Search in Google Scholar
6. Chen H. Turbine wheel design for Garrett advanced variable geometry turbines for commercial vehicle applications. London: Proc. 8th International Conference of Turbochargers and Turbocharging, 2006:317–327.10.1016/B978-1-84569-174-5.50027-0Search in Google Scholar
7. Yang D, Lao D, Yang C, Hu L, Sun H. Investigations on the generation and weakening of shock wave in a radial turbine with variable guide vanes. ASME Paper No GT2016-57047, 2016.10.1115/GT2016-57047Search in Google Scholar
8. Hayami H, Senoo Y, Hyun YI. Effects of tip clearance of nozzle vanes on performance of radial turbine rotor. ASME J Turbomach 1990;112:58–63.10.1115/1.2927421Search in Google Scholar
9. Tamaki H, Goto S, Unno M, lwakami A. The effect of clearance flow of variable area nozzles on radial turbine performance. ASME Paper No GT2008-50461, 2008.10.1115/GT2008-50461Search in Google Scholar
10. Hu LJ, Yang C, Sun H. Numerical analysis of nozzle clearance effect on turbine performance. Chin J Mech Eng 2011;24:618–625.10.3901/CJME.2011.04.618Search in Google Scholar
11. Jason W, Stephen S, Jan E, David T. An experimental assessment of the effects of stator vane tip clearance location and back swept blading on an automotive variable geometry turbocharger. J Turbomach June 2014;136:061001–061009.10.1115/1.4007517Search in Google Scholar
12. Zhao B, Yang C, Hu L, Sun H, Yi J, Eric C, et al. Understanding of the interaction between clearance leakage flow and main passage flow in a VGT turbine. Adv Mech Eng 2015;7:652769.10.1155/2014/652769Search in Google Scholar
13. Kawakubo T Unsteady rotor-stator interaction of a radial-inflow turbine with variable nozzle vanes. ASME Paper GT2010–23677, 2010.10.1115/GT2010-23677Search in Google Scholar
14. Liu Y, Yang C, Qi M, Zhang H, Zhao B. Shock, leakage flow and wake interactions in a radial turbine with variable guide vanes. ASME Paper GT2014-25888, 2014.10.1115/GT2014-25888Search in Google Scholar
15. Ganesh YR, Siddharth SB, Keerthi VK. Numerical investigation: effect of stator vanes on turbocharger turbine performance. Int J Rotating Mach 2014 p. 11. 2014. DOI: 10.1155/2014/984094.10.1155/2014/984094Search in Google Scholar
16. Daxin Z. Turbocharging and turbochargers. Beijing: China Machine Press, 1992.Search in Google Scholar
17. Zhang J, Zhuge W, Hu L, Li S. Design of turbocharger variable nozzle. ASME Paper No. GT2007-27562, 2007.10.1115/GT2007-27562Search in Google Scholar
18. NUMECA International. User Manual, AutoGrid5 v8, Automated Grid Generator for Turbomachinery, 2011.Search in Google Scholar
19. Hu L, Sun H, Yi J, Curtis E, Zhang J. Investigation of nozzle clearance effects on a radial turbine: aerodynamic performance and forced response. SAE Technical Paper, 2013-01-0918.10.4271/2013-01-0918Search in Google Scholar
20. Qiu X, Mark RA, Nicholas CB. Meanline modeling of radial inflow turbine with variable area nozzle. ASME Paper No GT2009-59170, 2009.10.1115/GT2009-59170Search in Google Scholar
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Articles in the same Issue
- Frontmatter
- Original Research Articles
- Numerical Study of Combinations of Strut and Cavity in a Round Supersonic Combustor
- Design and Numerical Analysis of a Forepart Rotation Vane for a Variable Nozzle Turbine
- Aerodynamic Efficiency Optimization of the 1st Stage of Transonic High Pressure Turbine through Lean and Sweep Angles
- The Effect of Dilution Air Jets on Aero-Engine Combustor Performance
- Simulation of a High Fidelity Turboshaft Engine-Alternator Model for Turboelectric Propulsion System Design and Applications
- Effects of Non-axisymmetric Casing Grooves Combined with Airflow Injection on Stability Enhancement of an Axial Compressor
- Exhaust System for Radial and Axial-Centrifugal Compressor with Pipe Diffuser
- Advanced Exergy Analysis of a Turbofan Engine (TFE): Splitting Exergy Destruction into Unavoidable/Avoidable and Endogenous/Exogenous
- A Preliminary Design System for Turbine Discs
- Tensile Behavior and Microstructural Evolution of the Polycrystalline Nickel-Based Superalloy Applied in Turbine Disk
Articles in the same Issue
- Frontmatter
- Original Research Articles
- Numerical Study of Combinations of Strut and Cavity in a Round Supersonic Combustor
- Design and Numerical Analysis of a Forepart Rotation Vane for a Variable Nozzle Turbine
- Aerodynamic Efficiency Optimization of the 1st Stage of Transonic High Pressure Turbine through Lean and Sweep Angles
- The Effect of Dilution Air Jets on Aero-Engine Combustor Performance
- Simulation of a High Fidelity Turboshaft Engine-Alternator Model for Turboelectric Propulsion System Design and Applications
- Effects of Non-axisymmetric Casing Grooves Combined with Airflow Injection on Stability Enhancement of an Axial Compressor
- Exhaust System for Radial and Axial-Centrifugal Compressor with Pipe Diffuser
- Advanced Exergy Analysis of a Turbofan Engine (TFE): Splitting Exergy Destruction into Unavoidable/Avoidable and Endogenous/Exogenous
- A Preliminary Design System for Turbine Discs
- Tensile Behavior and Microstructural Evolution of the Polycrystalline Nickel-Based Superalloy Applied in Turbine Disk
