This paper reports on the interfacial character and deflection of a high-speed gas jet transverse to an aqueous cross-flow as a function of cross-flow speed and gas jet Mach number. Several gas exit velocities were tested including subsonic cases up to supersonic cases at cross-flow velocities from 0.3 m/s to 0.7 m/s. For the subsonic cases, it was found that the stability and resistance of the gas jet to deflect in the presence of cross-flow were increased with the jet Mach number. However, the Mach 1.6 jet was more stable than the Mach 1.9 jet, suggesting that there exists upper and lower bounds for jet stability which are Mach number dependent. Unstable gas jets were shown to pinch-off, meaning the interface of the gas jet in a plane parallel to the ejector exit collapsed to almost a point and an independent bubble rose to the free surface. The stagnation side gas/liquid interfaces were analyzed using the Proper Orthogonal Decomposition (POD) method to better understand the fundamental mode shapes contained in the interface waveforms. It was found that the subsonic jets shared many of the same characteristics in their first, second, and third mode shapes. The supersonic jets differed from the subsonic mode shapes. Interestingly, the mode shapes for the subsonic cases compared well to those of a beam in transverse vibration with sliding-free boundary conditions. The supersonic cases compared relatively well to pinned-free boundary conditions, owing to the more columnar nature of the gas jet as it exited the ejector.
Skip Nav Destination
ASME/JSME 2007 5th Joint Fluids Engineering Conference
July 30–August 2, 2007
San Diego, California, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4288-6
PROCEEDINGS PAPER
Experimental Study of the Stability of a High-Speed Gas Jet Under the Influence of Liquid Cross-Flow
Chris Weiland,
Chris Weiland
Virginia Polytechnic Institute and State University, Blacksburg, VA
Search for other works by this author on:
Jon Yagla,
Jon Yagla
Naval Surface Warfare Center, Dahlgren, VA
Search for other works by this author on:
Pavlos Vlachos
Pavlos Vlachos
Virginia Polytechnic Institute and State University, Blacksburg, VA
Search for other works by this author on:
Chris Weiland
Virginia Polytechnic Institute and State University, Blacksburg, VA
Jon Yagla
Naval Surface Warfare Center, Dahlgren, VA
Pavlos Vlachos
Virginia Polytechnic Institute and State University, Blacksburg, VA
Paper No:
FEDSM2007-37303, pp. 599-610; 12 pages
Published Online:
March 30, 2009
Citation
Weiland, C, Yagla, J, & Vlachos, P. "Experimental Study of the Stability of a High-Speed Gas Jet Under the Influence of Liquid Cross-Flow." Proceedings of the ASME/JSME 2007 5th Joint Fluids Engineering Conference. Volume 1: Symposia, Parts A and B. San Diego, California, USA. July 30–August 2, 2007. pp. 599-610. ASME. https://doi.org/10.1115/FEDSM2007-37303
Download citation file:
18
Views
Related Proceedings Papers
Related Articles
Aeroelastic Stability of Axially Moving Webs Coupled to Incompressible Flows
J. Appl. Mech (March,2010)
A Navier–Stokes Analysis of the Stall Flutter Characteristics of the Buffum Cascade
J. Turbomach (October,2000)
Quantitative Analysis of Forced and Unforced Turbulent Multiphase Coaxial Jets
J. Fluids Eng (January,2021)
Related Chapters
The Identification of the Flame Combustion Stability by Combining Principal Component Analysis and BP Neural Network Techniques
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
Random Turbulence Excitation in Single-Phase Flow
Flow-Induced Vibration Handbook for Nuclear and Process Equipment
Vortex-Induced Vibration
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook