Properties of acoustic resonance in double-actuator ultra-sonic gas nozzle: numerical study

doi:10.1007/s10483-012-1638-x

Applied Mathematics and Mechanics (English Edition) ›› 2012, Vol. 33 ›› Issue (12): 1481-1492.doi: https://doi.org/10.1007/s10483-012-1638-x

• Articles • Next Articles

Properties of acoustic resonance in double-actuator ultra-sonic gas nozzle: numerical study

Hong-biao ZU^1,2,3, Zhe-wei ZHOU^1,2,3, Zhi-liang WANG^1,2,3

1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, P. R. China;
2. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, P. R. China;
3. Modern Mechanics Division, E-Institutes of Shanghai Universities, Shanghai University, Shanghai 200072, P. R. China

Received:2011-02-14 Revised:2012-09-21 Online:2012-12-10 Published:2012-12-10
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 10772107, 10702038, and 11172163), the E-Institutes of Shanghai Municipal Education Commission, and the Shanghai Program for Innovative Research Team in Universities

Abstract

Abstract: The ultra-sonic gas atomization (USGA) nozzle is an important apparatus in the metal liquid air-blast atomization process. It can generate oscillating supersonic gas efflux, which is proved to be effective to enforce the atomization and produce narrow-band particle distributions. A double-actuator ultra-sonic gas nozzle is proposed in the present paper by joining up two active signals at the ends of the resonance tubes. Numerical sim-ulations are adopted to study the effects of the flow development on the acoustic resonant properties inside the Hartmann resonance cavity with/without actuators. Comparisons show that the strength and the onset process of oscillation are enhanced remarkably with the actuators. The multiple oscillating amplitude peaks are found on the response curves, and two kinds of typical behaviors, i.e., the Hartmann mode and the global mode, are discussed for the corresponding frequencies. The results for two driving actuators are also investigated. When the amplitudes, the frequencies, or the phase difference of the input signals of the actuators are changed, the oscillating amplitudes of gas efflux can be altered effectively.

Key words: Rattling system, non-Gaussian closure technique, chaotic stochastic Vibration, mean mapping

2010 MSC Number:

O327

Hong-biao ZU;Zhe-wei ZHOU;Zhi-liang WANG. Properties of acoustic resonance in double-actuator ultra-sonic gas nozzle: numerical study. Applied Mathematics and Mechanics (English Edition), 2012, 33(12): 1481-1492.

TrendMD

References

[1] Hartmann, J. and Trolle, B. A new acoustic generator. Journal of Scientific Instruments, 4, 101-111 (1927)
[2] Raman, G. and Srinivasan, K. The powered resonance tube: from Hartmann’s discovery to currentactive flow control applications. Progress in Aerospace Sciences, 45, 97-123 (2009)
[3] Grant, N. J. Rapid solidification of metallic particulates. Journal of Metals, 35, 20-27 (1983)
[4] Ayres, J. D. and Anderson, I. E. Method for Generating Fine Sprays of Molten Metal for SprayCoating and Powder Making, Patent No. 4619845, U. S.A. (1986)
[5] Allimant, A., Planche, M. P., Bailly, Y., Dembinski, L., and Coddet, C. Progress in gas atomizationof liquid metals by means of a de Laval nozzle. Powder Technology, 190, 79-83 (2009)
[6] Zhao, W. J., Cao, F. Y., Ning, Z. L., Zhang, G. Q., Li, Z., and Sun, J. F. A computational fluiddynamics (CFD) investigation of the flow field and the primary atomization of the close coupledatomizer. Computers and Chemical Engineering, 40, 58-66 (2012)
[7] Mullis, A. M., McCarthy, I. N., and Cochrane, R. F. High speed imaging of the flow during close-coupled gas atomization: effect of melt delivery nozzle geometry. Journal of Materials ProcessingTechnology, 211, 1471-1477 (2011)
[8] Rai, G., Lavernia, E. J., and Grant, N. J. Powder size and distribution in ultrasonic gas atomiza-tion. Journal of Metals, 37(8), 22-26 (1985)
[9] Li, B., Hu, G. H., and Zhou, Z. W. Numerical simulation of flow in Hartmann resonance tube andflow in ultrasonic gas atomizer. Applied Mathematics and Mechanics (English Edition), 28(11),1415-1426 (2007) DOI 10.1007/s10483-007-1101-6
[10] Zhou, Z.W. and Tang, X. D. The effect of the pulsation in gas flow on the stability of melted metaljet. Fourth International Conference on Spray Forming, University of Maryland Press, Baltimore,U. S.A. (1999)
[11] Veistinen, M. K., Lavernia, E. J., Baram, J. C., and Grant, N. J. Jet behavior in ultrasonic gasatomization. The International Journal of Powder Metallurgy, 25(2), 89-92 (1989)
[12] Mansour, A., Chigier, N., Shih, T., and Kozarek, R. L. The effects of the Hartman cavity on theperformance of the USGA nozzle needed for aluminum spray forming. Atomization and Sprays,1, 1-24 (1998)
[13] Wang, Z. L. Actuator Driven Ultra-Sonic Gas Atomization Nozzle, Patent No. 200810203978, P.R.China (2008)
[14] Zu, H. B. and Wang, Z. L. Resonant behaviors of an ultra-sonic gas atomization nozzle with a zeromass-flux jet actuator. Journal of Shanghai University (English Edition), 15(3), 166-172 (2011)
[15] Spalart, P. and Allmaras, S. A One-Equation Turbulence Model for Aerodynamic Flows, TechnicalReport AIAA-92-0439, American Institute of Aeronautics and Astronautics (1992)
[16] Brocher, E., Maresca, A., and Bournay, M. H. Fluid dynamics of the resonance tube. Journal ofFluid Mechanics, 43, 369-384 (1970)
[17] Sreejith, G. J. and Narayanan, S. Studies on conical and cylindrical resonators. Applied Acoustics,69(12), 1161-1175 (2008)

Properties of acoustic resonance in double-actuator ultra-sonic gas nozzle: numerical study

PDF

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 1

Recommended Articles

Metrics

Comments