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Article

Effects of Gas Content in Fluid on Oscillating Frequencies of Self-Excited Oscillation Water Jets

[+] Author and Article Information
Yiyu Lu, Xiaohong Li

Education Ministry’s Key Lab for the Exploitation of Southwestern Resources & Environmental Disaster Control Engineering, Chongqing University, Chongqing, 400044 P.R. China

Lin Yang

Zhuzhou Institute of Technology, Zhuzhou, Hunan, 412008 P. R. China

J. Fluids Eng 126(6), 1058-1061 (Mar 11, 2005) (4 pages) doi:10.1115/1.1839925 History: Received October 31, 2003; Revised July 07, 2004; Online March 11, 2005

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References

Rockwell,  D., and Naudascher,  E., 1978, “Review—Self-Sustaining Oscillations of Flow Past Cavities,” ASME J. Fluids Eng., 100, pp. 152–165.
Rockwell,  D., 1977, “Prediction of Oscillation Frequencies for Unstable Flow Pas Cavities,” ASME J. Fluids Eng., 99, pp. 294–300.
Morel,  T., 1979, “Experimental Study of a Jet-Driven Helmholtz Oscillator,” ASME J. Fluids Eng., 101, pp. 383–390.
Johnson, V. E., and Conn, A. F., 1982, “Self-Resonating Cavitating Jets,” Proceedings of the 6th International Symposium on Jet Cutting Technology, pp. 1–25.
Chahine, G. L. et al., 1983, “Cleaning and Cutting With Self-Resonating Pulsed Water Jets,” Proceedings of the second US water jet conference, pp. 195–207.
Liao, Z. F., Tang, C. L., and Wang, G. H., 1991, “A New Type of Nozzle for Oil Well Drill Bits,” Proceedings of the 10th International Conference on Jet Cutting Technology, pp. 135–144.
Liao, Z. F., and Tang, C. L., 1987, “Theoretical Analysis and Experimental Study of the Self-Excited Oscillation Pulsed Jet Device,” Proceedings of the fourth US water jet conference, pp. 46–61.
Shen, Z. H., Li, G. S., Wang, Z., and Xu, Y., 1991, “New Jet Theory and Prospects of Its Application in Drilling Engineering,” 13th World Petroleum Congress, pp. 397–405.
Williams,  M., 1992, “A Helmholtz Pressure Equation Method for the Calculation of Unsteady Incompressible Viscous Flows,” Int. J. Numer. Methods Heat Fluid Flow, 14, pp. 1–12.
Zhu, Z., and Strokes, N., 1997, “Simulation of Two-Phase Flows in a Stirred Mixing Tank,” Inter Conf on CFD in Mineral & Metal Processing and Power Generation, pp. 387–394.
Samis, S., and Anderson, C., 1984, “Helmhotz Oscillator for the Self-Modulation of a Jet,” Proceedings of the 7th International Symposium on Jet Cutting Technology, pp. 91–98.

Figures

Grahic Jump Location
Schematic of self-excited oscillation nozzle. 1—upstream nozzle, 2—mixture fluid boundary, 3—oscillation chamber, 4—downstream nozzle, 5—impinging edge
Grahic Jump Location
Variation of dimensionless sound speed a* and Strouhal number Sl with gas content α for the same mode number (n=3) and two pressures (p=10 MPa, 15 MPa)
Grahic Jump Location
The principal frequency of the pressure fluctuations fp versus gas content α

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