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Spray characteristics of the rotating fuel injection system of a micro-jet engine

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Abstract

In micro-turbojet engines with less than 350 kW power, it is not easy to find a suitable fuel injector with good spray quality. However, the rotating fuel injection system can potentially provide high atomization quality without the high-pressure fuel pump through the centrifugal forces of the engine shaft. With this motivation, a very small rotating fuel injector with 40 mm diameter is designed for the micro-turbo jet engine. It is directly linked to a high-speed rotational spindle capable of a speed up to 100,000 rpm. The droplet size, velocity, and spray distribution from the PDPA (Phase Doppler Particle Analyzer) system are measured. The spray is also visualized by a high-speed camera. The test results show that the length of liquid column from injection orifice is controlled by the rotational speeds and that SMD (Sauter Mean Diameter) is decreased with increasing rotational speeds. At a rotational speed of 73.3 m/s (35,000 rpm), SMD is lower than 60 μm at the entirety of the measuring space in the case of Type 2 (injection orifice diameter of 1.5 mm) and Type 3 (injection orifice diameter of 2.2 mm). Therefore, conceptually, it is possible to apply this small rotating fuel injection system to the micro-turbojet engine combustor.

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References

  1. A. M. Mellor, Design of Modern Turbine Combustors, Academic Press, London, (1990), 306–314.

    Google Scholar 

  2. T. Morishita, A Development of the Fuel Atomizing Device Utilizing High Rotational Speed, ASME Paper No. 81-GT-180, American Society of Mechanical Engineers, New York, NY.

  3. W. J. A. Dahm, P. R. Patel and B. H. Lerg, Experimental Visualization of Liquid Breakup Regimes in Fuel Slinger Atomization, Atomization and Sprays, 16 (2006) 933–944.

    Article  Google Scholar 

  4. W. J. A. Dahm, P. R. Patel and B. H. Lerg, Analysis of Liquid Breakup Regimes in Fuel Slinger Atomization, Atomization and Sprays, 16 (2006) 945–962.

    Article  Google Scholar 

  5. Seongman Choi, Donghun Lee and Jeongbae Park, Ignition and Combustion Characteristics of the Gas Turbine Slinger Combustor, Journal of Mechanical Science and Technology, 22 (2008) 538–544.

    Article  Google Scholar 

  6. Donghun Lee, Hyungmo Kim, Poomin Park, Gyungwon You and Kisuk Paeng, Full rig test and high altitude ignition test of micro turbojet engine combustor, Proceedings of the 2009 KSPE spring conference, (2009) 373–376.

  7. J. Mazallon, Z. Dai and G. M. Faeth, Primary Breakup of Nonturbulent Round Liquid Jets in Gas Crossflows, Atomization and Sprays, 9 (1999) 291–311.

    Google Scholar 

  8. T. Arai and H. Hashimoto, Disintegration of a thin liquid sheet in a concurrent gas stream, Proceedings of the 3rd international conference on liquid atomization and spray systems, London, (1985) V1B/1/1-7.

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Authors and Affiliations

  1. Department of Aerospace Engineering, Chonbuk National University, Jeonju, 561-756, Korea

    Seong Man Choi

  2. Graduate School, Chonbuk National University, Jeonju, 561-756, Korea

    Seong Ho Jang

  3. Samsung Techwin Co., LTD, Changwon, 641-717, Korea

    Dong Hun Lee

  4. Agency for Defense Development, Daejeon, Korea

    Gyong Won You

Authors
  1. Seong Man Choi
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  2. Seong Ho Jang
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  3. Dong Hun Lee
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  4. Gyong Won You
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Corresponding author

Correspondence to Seong Man Choi.

Additional information

This paper was recommended for publication in revised form by Associate Editor Tong Seop Kim

Seong Man Choi received his B.S., M.S., and Ph.D. degrees in Aerospace Engineering from Seoul National University in 1987, 1989, and 1994, respectively. He worked for Samsung Techwin Co. Ltd. from 1994 to 2005 as a Principal Research Engineer. He has been an Associate Professor in the Aerospace Engineering Department of Chonbuk National University, Korea, since 2005. His research interests focus on gas turbines and rocket combustion systems. In particular, he is interested in spray dynamics of the fuel injection systems, visualization of the flame in a gas turbine sector combustors, and supersonic exhaust systems.

Seongho Jang received a B.S. degree in Aerospace Engineering at Chonbuk National University in 2007. He is currently an M. S. candidate in the Department of Aerospace Engineering of Chonbuk National University, Korea. His research interests are in the field of micro-turbojet engine and rotating fuel injector.

Dong Hun Lee received his B.S. and M.S. degrees in Aerospace Engineering from Chungnam National University in 1997 and 1999, respectively. He has been a Senior Researcher in Power Systems R&D Center, Samsung Techwin Co., Ltd. in Korea since 2001 and is currently a Ph.D. candidate in the Aerospace Engineering Department of Chungnam National University. His research interests focus on fuel injections and combustion of gas turbines. In particular, he is interested in spray and atomization characteristics in gas turbine combustor and laser diagnostics for investigation of spray dynamics.

Gyong Won You received his B.S. and M.S. degrees in Precision Mechanical Engineering from Chonbuk National University in 1994 and 1996, respectively. He has been a Senior Researcher in the Agency for Defense Development in Korea since 1996. His research interests focus on the fuel injection, combustion of gas turbine and fuel transfer systems of vehicles.

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Choi, S.M., Jang, S.H., Lee, D.H. et al. Spray characteristics of the rotating fuel injection system of a micro-jet engine. J Mech Sci Technol 24, 551–558 (2010). https://doi.org/10.1007/s12206-009-1206-6

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  • DOI: https://doi.org/10.1007/s12206-009-1206-6

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