JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Microgravity Combustion Characteristics of Polystyrene Spheres with Various Ambient Gases
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Microgravity Combustion Characteristics of Polystyrene Spheres with Various Ambient Gases
Choe, Byeong-Cheol;
  PDF(new window)
 Abstract
An experimental and numerical analysis were conducted to investigate the transient temperature distribution and flame propagation characteristics over an inline polystyrene spheres under microgravity. From the experimental, a self-ignition temperature of polystyrene bead was 872 K under gravity. Flame spread rates were 4.7-5.1 mm/s with ambient gas Nand 2.3-2.5 mm/s with ambient gas CO, respectively. Flame radius diameters were 17 mm with ambient gas Nand 9.6 mm with ambient gas CO, respectively. These results suggest that the flame propagation speed could be affected in the Diesel engine and the boiler combustor by EGR. In terms of the flame spread rate and the transient temperature profile, numerical results have the qualitative agreement with the experiment.
 Keywords
Combustion;Microgravity Combustion;Droplet Combustion;Polystyren;EGR;
 Language
Korean
 Cited by
 References
1.
송규근, 최병철, 1999, 연소공학, 청문각, pp. 138-149

2.
Kumagai, S. and Isoda, H., 1956, 'Combustion of Fuel Droplets in a Falling Chamber,' The 6th Symposium (Int.) on Combustion, p. 726

3.
Koing, J., Eigenbrod, C., Tanabe, M., Renken, H. and Rath, H. J., 1996, 'Characterization of Spherical Hydrocarbon Fuel Flames: Laser Diagnosis of the Chemical Structure Through the OH Radical,' 26th Symposium (Int.) on Combustion, pp. 1235 --1242

4.
Fujita, O., Ito, K., Furuyama, K. and Ueno, M., 1998, 'Combustion Propagation in a Crowd Fuel Droplet Based on the Microgravity Experiment Results,' The 36th Japanese Symposium on Combustion, pp. 432-434

5.
Smooke, M. D., 1982, 'Solution of Burner-Stabilized Premixed Laminar Flames by Boundary Value Methods,' J. of Computational Physics, Vol. 48, pp. 72 -105 crossref(new window)

6.
Cho, S. Y. and Dryer, F. L., 1999, 'A Numerical Study of the Unsteady Burning Behaviour of n-heptane Droplets,' Combust. Theory Modeling, Vol. 3, pp. 267 - 280 crossref(new window)

7.
Hildado, C. J., 1982, 'Flammability Handbook for Electrical Insulation,' Technonic Publishing

8.
1991, JSME, JSME Data Book: Heat Transfer (4th Edition), pp. 328 - 330

9.
Choi, D. S., Kim, D. J. and Hwang, S. C., 2000, 'Development Behavior of Vaporizing Sprays from a High-pressure Swirl Injector using Exciplex Fluorescence Method,' KSME Int. J., Vol. 14, No. 10, pp. 1143-1150

10.
Lee, S. Hand Ryou, H. S., 2000, 'Modeling of Diesel Spray Impingement on a Flat Wall,' KSME Int. J., Vol. 14, No.7, pp. 796 - 806