• Paik, Kyong-Yup (School of Mechanical and Aerospace Engineering, Seoul National University) ;
• Yoon, Jung-Soo (School of Mechanical and Aerospace Engineering, Seoul National University) ;
• Hwang, Jeong-Jae (School of Mechanical and Aerospace Engineering, Seoul National University) ;
• Chung, Jae-Mook (School of Mechanical and Aerospace Engineering, Seoul National University) ;
• Bouvet, Nicolas (School of Mechanical and Aerospace Engineering, Seoul National University) ;
• Yoon, Young-Bin (School of Mechanical and Aerospace Engineering, Seoul National University)
• Accepted : 2011.09.14
• Published : 2011.09.30

Abstract

In order to design a shear coaxial injector of solid particles with water, basic experiments on a particle laden jet are necessary. The purpose of the present study is to understand the effect of particle loading ratio on the particle spray characteristics (i.e. spreading angle, distribution of particle number density, velocity profiles, and particle developing region length). Hydro-reactive Al2O3 particles with a primary particle diameter of 35~50 ${\mu}m$ are used in this experiment. An automated particle feeder was designed to supply constant particle mass flowrates. Air is used as the carrier gas. To determine the air velocity at the orifice exit, tracers (aluminum oxide, 0.5~2 ${\mu}m$ primary diameter) are also supplied by a tracer feeder. A plain orifice type injector with 3 mm diameter, and 20 mm length was adopted. Particle image velocimetry is used to measure the mean and fluctuating velocity components along the axial and radial directions.

Acknowledgement

Supported by : NRF

References

1. Barlow, R. S. and Morrison, C. Q. (1990). Two-phase velocity measurements in dense particle-laden jets. Experiments in Fluids, 9, 93-104. https://doi.org/10.1007/BF00575341
2. Fleckhaus, D., Hishida, K., and Maeda, M. (1987). Effect of laden solid particles on the turbulent flow structure of a round free jet. Experiments in Fluids, 5, 323-333. https://doi.org/10.1007/BF00277711
3. Foote, J. P., Lineberry, J. T., Thompson, B. R., and Winkelman, B. C. (1996). Investigation of aluminum particle combustion for underwater propulsion applications. Proceedings of the 32nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Lake Buena Vista, FL.
4. Gillandt, I., Fritsching, U., and Bauckhage, K. (2001). Measurement of phase interaction in dispersed gas/particle two-phase flow. International Journal of Multiphase Flow, 27, 1313-1332. https://doi.org/10.1016/S0301-9322(01)00007-6
5. Hart, D. P. (1998). The elimination of correlation errors in PIV processing. Proceedings of the 9th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal.
6. Jou, B. H., Sheen, H. J., and Lee, Y. T. (1993). Particle mass loading effect on a two-phase turbulent downward jet flow. Particle and Particle Systems Characterization, 10, 173-181. https://doi.org/10.1002/ppsc.19930100405
7. Laats, M. K. (1969). Experimental study of the dynamics of an air-dust jet. Journal of Engineering Physics, 10, 6-8.
8. Levy, Y. and Lockwood, F. C. (1981). Velocity measurements in a particle laden turbulent free jet. Combustion and Flame, 40, 333-339. https://doi.org/10.1016/0010-2180(81)90134-6
9. Modarress, D., Tan, H., and Elghobashi, S. (1984). Twocomponent lda measurement in a two-phase turbulent jet. AIAA Journal, 22, 624-630. https://doi.org/10.2514/3.8647
10. Park, C. J. and Chen, L. D. (1989). Experimental investigation of confined turbulent jets. Part II. Particleladen flow data. AIAA Journal, 27, 1511-1516. https://doi.org/10.2514/3.48839
11. Popper, J., Abuaf, N., and Hetsroni, G. (1974). Velocity measurements in a two-phase turbulent jet. International Journal of Multiphase Flow, 1, 715-726. https://doi.org/10.1016/0301-9322(74)90027-5
12. Shuen, J. S., Solomon, A. S. P., Zhang, Q. F., and Faeth, G. M. (1985). Structure of particle-laden jets: measurements and predictions. AIAA journal, 23, 396-404. https://doi.org/10.2514/3.8926
13. Tsuji, Y., Morikawa, Y., Tanaka, T., Karimine, K., and Nishida, S. (1988). Measurement of an axisymmetric jet laden with coarse particles. International Journal of Multiphase Flow, 14, 565-574. https://doi.org/10.1016/0301-9322(88)90058-4