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TECHNICAL PAPERS: Gas Turbines: Microturbines and Small Turbomachinery

Microscale Radial-Flow Compressor Impeller Made of Silicon Nitride: Manufacturing and Performance

[+] Author and Article Information
Sangkyun Kang

Samsung Advanced Institute of Technology, MEMS Laboratory, SAIT P.O. Box 111, Suwon 440-600, Koreae-mail: sangkyun.kang@samsung.com

James P. Johnston, Friedrich B. Printz

Department of Mechanical Engineering, Stanford University, Stanford, CA 94305

Toshiyuki Arima, Minoru Matsunaga, Hideaki Tsuru

Wako Research Center, Honda R&D Company, Ltd., Saitama, Japan

J. Eng. Gas Turbines Power 126(2), 358-365 (Jun 07, 2004) (8 pages) doi:10.1115/1.1739246 History: Received October 01, 2002; Revised March 01, 2003; Online June 07, 2004
Copyright © 2004 by ASME
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References

Kang, S., 2002, “Fabrication of Ceramic Components for a Micro Gas Turbine Engine,” Ph.D. thesis, Stanford University, Stanford, CA.
Epstein, A. H. et al., 2000, “Shirtbutton-Sized Gas Turbines: The Engineering Challenges of Micro High Speed Rotating Machinery,” Proceedings, 8th Int’l Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, HI.
Isomura, K. et al., 2002, “Design of a Micromachined Gas Turbine With 3-Dimensional Impeller,” Proceedings, The 9th of International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, HI.
Casey,  M. V., 1985, “The Effects of Reynolds Number on the Efficiency of Centrifugal Compressor Stages,” ASME J. Eng. Gas Turbines Power, 107, pp. 541–548.
Jacobson, S. A., 1998, “Aerothermal Challenges in the Design of a Microfabricated Gas Turbine Engine,” Proceedings, 29th AIAA fluid Dynamics Conference, Albuquerque, NM.
Wachtman, J. B., 1996, Mechanical Properties of Ceramics, John Wiley & Sons, New York.
Cooper,  A. G. , 1999, “Automated Fabrication of Complex Molded Parts Using Mold Shape Deposition Manufacturing,” Mater. Des., 20(2/3), pp. 83–89.
Stampfl,  J. , 2002, “Rapid Prototyping and Manufacturing by Gelcasting of Metallic and Ceramic Slurries,” Mater. Sci. Eng., A, 334, pp. 187–192.
Arima,  T. , 1999, “A Numerical Investigation of Transonic Axial Compressor Rotor Flow Using a Low Reynolds Number k-e Turbulence Model,” ASME J. Eng. Gas Turbines Power, 121, pp. 45–58.
Kline,  S. J., and McClintock,  F., 1953, “Describing Uncertainties in Single Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), pp. 3–8.

Figures

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CAD model of compressor
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Fracture behavior of ceramic specimens under the identical loading conditions
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Mold SDM process build sequence example
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Cross section of inlet nozzle block, rotor group, bearings, and mounting unit
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Rotor group mounted on ball bearings
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Compressor rotor in test rig showing measurement stations and instruments
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Pressure ratio at 420,000 rpm
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Temperature rise at 420,000 rpm
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Pressure ratio at various rotor speeds with a curve of flow similarity
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Adiabatic efficiency at 800 krpm and 420 krpm based on three pressures
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Adiabatic efficiency and its uncertainty versus rotor speed along a trajectory of flow rate similitude

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