The multilevel stepped-wall and rectangular observation chambers are designed to study the multipoint ignition process and the combustion stability control mechanism of the bulk-loaded liquid propellant gun. The expansion process and interaction of high-speed twin combustion-gas jets in liquid are studied by means of a high-speed digital camera system. The influence of the nozzle diameter, dual-orifice interval, jet pressure, and chamber structure on the jet expansion shape is discussed. The results indicate that a larger ratio of diameter-to-length can suppress the jet instability in stepped-wall chambers. Higher axial expansion velocity is found under the larger injection pressure, which it increases the instability of jet expansion process. Compared with a rectangular chamber, the axial expansion velocity is smaller, and the radial expansion velocity is larger in stepped-wall chambers under the same conditions. The theoretical studies of interaction of the gas jet with liquid were developed based on the experiment. Two-dimensional unsteady models are used to get the pressure, density, and velocity contours. The numerical simulation results coincide well with the experiment.
Skip Nav Destination
e-mail: yyg801@mail.njust.edu.cn
Article navigation
September 2010
Research Papers
Study on Expansion Process and Interaction of High Speed Twin Combustion-Gas Jets in Liquid
Yonggang Yu,
Yonggang Yu
School of Power Engineering,
e-mail: yyg801@mail.njust.edu.cn
Nanjing University of Science and Technology
, Nanjing 210094, China
Search for other works by this author on:
Shanheng Yan,
Shanheng Yan
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, China
Search for other works by this author on:
Na Zhao,
Na Zhao
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, China
Search for other works by this author on:
Xin Lu,
Xin Lu
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, China
Search for other works by this author on:
Yanhuang Zhou
Yanhuang Zhou
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, China
Search for other works by this author on:
Yonggang Yu
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, Chinae-mail: yyg801@mail.njust.edu.cn
Shanheng Yan
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, China
Na Zhao
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, China
Xin Lu
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, China
Yanhuang Zhou
School of Power Engineering,
Nanjing University of Science and Technology
, Nanjing 210094, ChinaJ. Appl. Mech. Sep 2010, 77(5): 051404 (7 pages)
Published Online: May 17, 2010
Article history
Received:
July 29, 2009
Revised:
December 11, 2009
Online:
May 17, 2010
Published:
May 17, 2010
Citation
Yu, Y., Yan, S., Zhao, N., Lu, X., and Zhou, Y. (May 17, 2010). "Study on Expansion Process and Interaction of High Speed Twin Combustion-Gas Jets in Liquid." ASME. J. Appl. Mech. September 2010; 77(5): 051404. https://doi.org/10.1115/1.4001288
Download citation file:
Get Email Alerts
Cited By
Related Articles
Spark-Ignition and Combustion Characteristics of High-Pressure Hydrogen and Natural-Gas Intermittent Jets
J. Eng. Gas Turbines Power (November,2008)
Modeling Wall Film Formation and Breakup Using an Integrated Interface-Tracking/Discrete-Phase Approach
J. Eng. Gas Turbines Power (March,2011)
Modeling Mixture Formation in a Gasoline Direct Injection Engine
J. Appl. Mech (November,2006)
Precombustion Chamber Design for Emissions Reduction From Large Bore NG Engines
J. Eng. Gas Turbines Power (December,2010)
Related Proceedings Papers
Related Chapters
Openings
Guidebook for the Design of ASME Section VIII Pressure Vessels
Openings
Guidebook for the Design of ASME Section VIII Pressure Vessels, Third Edition
A Simple Carburetor
Case Studies in Fluid Mechanics with Sensitivities to Governing Variables