ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Multiphase Science and Technology
SJR: 0.153 SNIP: 0.222 CiteScore™: 0.26

ISSN 印刷: 0276-1459
ISSN オンライン: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v22.i2.30
pages 133-155

EXPERIMENTAL INVESTIGATION OF GEOMETRIC SCALING ON ATOMIZATION IN A TWO-PHASE GAS/LIQUID SPRAY

C. E. Ejim
Schlumberger REDA Production Systems, Singapore 629971
Mohammad Azizur Rahman
Mushroom Research Centre, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia; Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka, Bangladesh
Alidad Amirfazli
Department of Mechanical Engineering, York University, Toronto, Ontario, Canada M3J 1P3
Brian A. Fleck
Mechanical Engineering Department, University of Alberta, 4-9 Mechanical Engineering Building, Edmonton, AB, T6G 2G8, Canada

要約

In this study the atomization performance of a full-scale industrial air-liquid nozzle is compared to a one-quarter model. The objective is to establish a global Sauter mean diameter D32(gb) correlation as a function of nozzle size (D) in a two-phase gas/liquid (TPGL) spray atomization. This information is to be used in the design and development of nozzles for heavy oil upgrading industry. Compressed air was used as the gas phase; the liquids were water, canola oil, and glycerine solutions all at room temperature. The liquid flow rates were varied from 0.095 to 0.195 L/s, and the gas-to-liquid-ratio (β), by mass, was fixed at 1%, similar to commercial fluid coker nozzles. Fluid mixing pressures in the test were between 516 and 1000 kPa. The D32 within the spray was measured using a Dantec 2-D phase-Doppler particle anemometer (PDPA) with measurements performed at axial distances of 100, 202, and 405 mm from the nozzle exit and within spray widths of +50 to -50 mm in the horizontal plane. Experimental results show that if the D is increased from 3.1 to 4.1 mm (1.3 times), D does not show a change on D32 and equates to the power of 0.1 (glycerine solution sprays at μL = 67 mPa s) to 0.9 (water sprays at μL = 1 mPa s). Finally, the D32(gb) correlation as a function of geometric scaling estimated drop size within a 17% maximum deviation between the experimental and curve fit data.

参考

  1. Albrecht, H. E., Borys, M., Damaschke, N., and Tropea, C., Laser Doppler and Phase Doppler Measurement Techniques.

  2. Buckner, H. N. and Sojka, P. E., Effervescent atomization of high-viscosity fluids: Part I. Newtonian liquids.

  3. Chan, E. W., Base, T. E., and McCracken, T., Design and development of Syncrude coker feed nozzles - A coker 2000 initiative.

  4. Chen, S. K. and Lefebvre, A. H., Discharge coefficients for plain-orifice effervescent atomizers.

  5. Chesters, A. K., The applicability of dynamic-similarity criteria to isothermal liquid-gas two-phase flows without mass transfer. DOI: 10.1016/0301-9322(75)90008-7

  6. Damaschke, N., Gouesbet, G., Grehan, G., Mignon, H., and Tropea, C., Response of phase Doppler anemometer systems to nonsperical droplets. DOI: 10.1364/AO.37.001752

  7. Dodge, L. G., Rhodes, D. J., and Reitz, R. D., Drop-size measurement techniques for sprays: Comparison of Malvern laser-diffraction and aerometrics phase/Doppler. DOI: 10.1364/AO.26.002144

  8. Douglas, J. F., Gasiorek, J. M., and Swaffield, J. A., Fluid Mechanics.

  9. Dullenkopf, K., Willmann, M., Wittig, S., Schne, F., Stieglmeier, M., Tropea, C., and Mundo, C., Comparative mass flux measurements in sprays using a patternator and the phase-Doppler technique. DOI: 10.1002/(SICI)1521-4117(199804)15:2<81::AID-PPSC81>3.0.CO

  10. Ejim, C. E., Effect of Liquid Viscosity, Surface Tension and Nozzle Size on Atomization in Two-Phase Nozzles.

  11. Eroglu, H. and Chigier, N., Wave characteristics of liquid jets from airblast coaxial atomizers.

  12. Geraets, J. J. M., Centrifugal scaling of isothermal gas-liquid flow in horizontal tubes. DOI: 10.1016/0301-9322(88)90045-6

  13. Grehan, G., Gouesbet, G., Naqvi, A., and Durst, F., Particle trajectory effects in phase Doppler systems. DOI: 10.1002/ppsc.19930100607

  14. Grehan, G., Gouesbet, G., Naqvi, A., and Durst, F., Trajectory ambiguities in phase Doppler systems: Study of a near forward and a near backward geometry. DOI: 10.1002/ppsc.19940110205

  15. Heskestad, G., Scaling the interaction of water sprays and flames. DOI: 10.1016/S0379-7112(02)00012-7

  16. Hurlbert, K. M., Witte, L. C., Best, F. R., and Kurwitz, C., Scaling two-phase flows to Mars and Moon gravity conditions. DOI: 10.1016/j.ijmultiphaseflow.2004.01.004

  17. Jermy, M. C., Hussain, M., and Greenhalgh, D. A., Operating liquid-fuel airblast injectors in low-pressure test rigs: Strategies for scaling down the flow conditions. DOI: 10.1088/0957-0233/14/7/334

  18. Kim, J. Y. and Lee, S. Y., Dependence of spraying performance on the internal flow pattern in effervescent atomizers.

  19. Knapper, B. A., Experimental Studies on the Hydrodynamics of Fluid Bed Cokers.

  20. Lefebvre, A. H., Atomization and Sprays.

  21. Lefebvre, A. H., Wang, X. F., and Martin, C. A., Spray characteristics of aerated-liquid pressure atomizers. DOI: 10.2514/3.23066

  22. Liu, H., Science and Engineering of Droplets—Fundamentals and Applications.

  23. Lorcher, M., Schmidt, F., and Mewes, D., Flow field and phase distribution inside effervescent atomizers.

  24. Lund, M. T., Sojka, P. E., Lefebvre, A. H., and Gosselin, P. G., Effervescent atomization at low mass flow rates, Part 1: The influence of surface tension.

  25. Luong, J. T. K. and Sojka, P. E., Unsteadiness in effervescent sprays.

  26. Nasr, G. G., Yule, A. J., and Bendig, L., Industrial Sprays and Atomization: Design.

  27. Przybylski, R., Canola Oil: Physical and Chemical Properties.

  28. Rahman, M. A., McMillan, J., Heidrick, T., and Fleck, B. A., Horizontal two-phase flow regimes and bubble size distribution prediction using high speed image analysis.

  29. Rahman, M. A., Gomez, J., McMillan, J., Heidrick, T., and Fleck, B. A., Correlations of the droplet size-velocity of the two-phase, air/liquid spray using a particle-dynamic-analyzer.

  30. Rahman, M. A., Heidrick, T., and Fleck, B. A., A critical review of advanced experimental techniques to measure two-phase gas/liquid flow. DOI: 10.2174/1876973X00902010054

  31. Rahman, M. A., Heidrick, T., and Fleck, B. A., A critical review of two-phase gas/liquid industrial spray systems.

  32. Rahman, M. A., Heidrick, T., and Fleck, B. A., Characterizing the two-phase, air/liquid.

  33. Ricou, F. P. and Spalding, D. B., Measurements of entrainment by axisymmetrical turbulent jets. DOI: 10.1017/S0022112061000834

  34. Roesler, T. C., and Lefebvre, A. H., Studies on aerated-liquid atomization.

  35. Simomons, H. C., The prediction of Sauter mean diameter for gas turbine fuel nozzles of different types.

  36. Sovani, S. D., Sokja, P. E., and Lefebvre, A. H., Effervescent atomization. DOI: 10.1016/S0360-1285(00)00029-0

  37. Sovania, S. D., Choua, E., Sojkaa, P. E., Gorea, J. P., Eckerleb, W. A., and Crofts, J. D., High pressure effervescent atomization: Effect of ambient pressure on spray cone angle. DOI: 10.1016/S0016-2361(00)00105-8

  38. Weiss, M. A. and Warsham, C. H., Atomization in high velocity air streams.

  39. Whalley, P. B., Two-Phase Flow and Heat Transfer.

  40. White, F. M., Fluid Mechanics.

  41. Whitlow, J. D. and Lefebvre, A. H., Effervescent atomizer operation and spray characteristics.


Articles with similar content:

BREAKUP AND ATOMIZATION OF A KEROSENE JET IN CROSSFLOWAT ELEVATED PRESSURE
Atomization and Sprays, Vol.12, 2002, issue 1-3
Christoph Hassa, Julian Becker
HEAT TRANSFER BETWEEN A PRESSURIZED GAS-SOLID SUSPENSION AND IMMERSED SURFACES
International Heat Transfer Conference 9, Vol.5, 1990, issue
P. Rantanen , N.-E. Fagerholm, P. Kukkonen
EXPERIMENTAL INVESTIGATION OF THE 700 MWe CONTAINMENT SPRAY SYSTEM SPRAY NOZZLES/SYSTEM
Atomization and Sprays, Vol.27, 2017, issue 8
Manish Jain, Kannan Iyer, S. F. Vhora, S. V. Prabhu, T. K. Kandar
DROPLET SIZE DISTRIBUTIONS OF ADJUVANT-AMENDED SPRAYS FROM AN AIR-ASSISTED FIVE-PORT PWM NOZZLE
Atomization and Sprays, Vol.21, 2011, issue 3
Jiabing Gu, Weimin Ding, Hong Young Jeon, Heping Zhu
A DESCRIPTION OF THE DROPLET SPECTRA PRODUCED BY A FLAT-FAN NOZZLE
Atomization and Sprays, Vol.3, 1993, issue 4
Andrew C. Chapple, Franklin R. Hall