Combustion Characteristics of a Helmholtz-Type Valveless Self-Excited Pulse Combustor

Abstract:

Combustion characteristics of a Helmholtz-type valveless self-excited pulse combustor with continuous supply of gas and air were studied. The physical and mathematical models are established based on the actual pulse combustor, and the combustion characteristics are simulated with CFD. The results show that the possible re-ignition sources for the pulse combustion may be three. The first source may be the hot remnant gas near gas/air mixture. The second re-ignition source may be the high-temperature combustion chamber wall. The third ignition source is the unburned mixture. The pressure, temperature and mass fraction of propane in the combustion chamber have the phase relations and the combustion process stimulates the acoustic oscillation.

• Periodical: Applied Mechanics and Materials (Volumes 291-294)
• Pages: 1719-1722
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.291-294.1719
• Online since: February 2013
• Authors: Yu Fen Qian, Yan Ying Xu, Ti Hai Xu
• Keywords: Combustion Characteristic, Helmholtz-Type Valveless Self-Excited Pulse Combustor, Phase Relations, Re-Ignition Source

References

[1] L. Xu, et al., Improvement of dissolution rate of ibuprofen by solid dispersion systems with Kollicoat IR using a pulse combustion dryer system, Journal of Drug Delivery Science and Technology, Vol. 19 (2009), pp.113-118.

DOI: 10.1016/s1773-2247(09)50018-4

[2] Z.F. Xiao, et al., Influence of atomizing parameters on droplet properties in a pulse combustion spray dryer, Drying Technology, Vol. 26 (2008), pp.427-432.

DOI: 10.1080/07373930801929235

[3] A.S. Huber, et al., Preformed antibodies in Pulsatile and continuous flow ventricular-assist device recipients, Journal of Heart and Lung Transplantation, Vol. 27 (2008), p. S158-S159.

DOI: 10.1016/j.healun.2007.11.282

[4] Tarjiri K, Menon S. LES of Combustion Dynamics in a Pulse Combustor. Presented at the 39th Aerospace Sciences Meeting(2001).

DOI: 10.2514/6.2001-194

[5] Benelli G, Michele De G, Cossalter V, Lio Da M, Rossi G. Simulation of Large Non-Linear Thermo-Acoustic Vibrations in a Pulsating Combustor[J]. Symposium (International) on Combustion, Vol. 24 (1992), pp.1307-1313.

DOI: 10.1016/s0082-0784(06)80152-9

[6] W. Zhonghua, A. S. Mujumdar, Pulse combustion characteristics of various gaseous fuels, Energy & Fuels, Vol. 22 (2008), pp.915-924.

DOI: 10.1021/ef7004207

[7] Xu Yanying, Zhai Ming Dong Peng Wang Fei, Zhu Qunyi, Modeling of a Valveless Self-excited Pulse Combustor and Stability Analysis, Combustion Theory and Modelling, Vol. 5 (2011), p.623–643.

DOI: 10.1080/13647830.2011.556258