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Stratified Charge Rotary Engine Internal Flow Studies at the MSU Engine Research Laboratory
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Abstract
This study involves the development of high speed flow visualization and laser doppler velocimetry (LDV) systems which are used to study the fuel spray-air mixing flow characteristics within the combustion chamber of a motored rotary engine. A 40-watt copper vapor laser is used as the light source. Its beam is focused down to a sheet approximately 1 mm thick. The light plane is passed through the combustion chamber, which allows complete optical access, and it illuminates smoke particles which were entrained in the intake air. The light scattered off the particles is recorded by a high speed rotating prism camera. Movies are made showing the air flow within the combustion chamber. The results of a movie showing the development of a high speed (100 Hz) high pressure (68.94 MPa, 10000 psi) fuel jet are also discussed. The visualization system is synchronized so that a pulse generated by the camera triggers the laser's thyratron. The camera is run at 5000 frames per second; the trigger drives one laser pulse per frame.
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Authors
- F. Hamady - Michigan State University East Lansing, MI
- J. Kosterman - Michigan State University East Lansing, MI
- E. Chouinard - Michigan State University East Lansing, MI
- C. Somerton - Michigan State University East Lansing, MI
- H. Schock - Michigan State University East Lansing, MI
- K. Chun - NASA Lewis Research Center Cleveland, OH
- Y. Hicks - NASA Lewis Research Center Cleveland, OH
Citation
Hamady, F., Kosterman, J., Chouinard, E., Somerton, C. et al., "Stratified Charge Rotary Engine Internal Flow Studies at the MSU Engine Research Laboratory," SAE Technical Paper 890331, 1989, https://doi.org/10.4271/890331.Also In
References
- Beech Aircraft Corporation “Advanced General Aviation Comparative Engine/Airframe Studies,” Report No. 165565, Prepared under NASA Contract NAS32220 March 1982
- Willis, E.A. Wintucky, W.T. “An Overview of NASA Intermittent Combustion Engine Research,” AIAA Paper 84-1393, presented at the AIAA/ASME/SAE Joint Propulsion Conference Cincinnati, OH. June 1984
- Hicks, Y.R. Schock, H.J. Craig, J.E Umstatter, H.L. Lee, D.Y. “Visualization of Flows in a Motored Rotary Combustion Engine Using Holographic Interferometry,’ AIAA Paper 86-1557 1986
- Dimpelfeld, P.M. Witze, P.O. “Velocity Measurements in a 5.8 Liter Stratified- Charge Rotary Engine,” Sandia National Laboratories July 1988
- Steinthorsson, E. Shih, T. I-P. Schock, H.J. James, J. “Calculation of the Unsteady, Three Dimensional Flow Field Inside a Motored Wankel Engine,” SAE Paper No. 880625 February 1988
- Abraham, J. Wey, M.J. Bracco, F.V. “Pressure Non-Uniformity and Mixing Characteristics in Stratified-Charge Rotary Engine Combustion,” SAE Paper No. 880624 February 1988
- Regan, C.A. Chun, K.S. Schock, H.J. “Engine Flow Visualization Using Copper Vapor Laser,” Proceedings of SPIE 737 1987 17 27
- Shih, T. I-P. Schock, H.J. Ramos, J.I. “Fuel-Air Mixing and Combustion in a Two-Dimensional Wankel Engine,” SAE Paper No. 870408 February 1987
- Lock, J. A. Schock, H. J. “Incident Beam Polarizations for Laser Doppler Velocimetry Employing a Sapphire Cylindrical Window,” Applied Optics 24 1987 July 1 1985