Experimental research of electrostatic spray with digital holography
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1.
State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710024, China;
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2.
School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnic University, Xi'an 710072, China
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Received Date:
2012-07-16
Accepted Date:
2012-08-27
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Abstract
To obtain data about position, size and velocity of droplets in the electrostatic spray, a device based on in-line digital microscopic holography for spray measurement was devised and established, which has lateral measurement scope of Ø12.5mm, utmost spatial resolution of 90.5LP/mm, and the capacity of measuring the droplet in 8μm diameter. Spray measurements under the Talyor-cone mode with single metal capillary and multiple metal capillaries were carried out respectively on the established device, and the relations between average diameter, average velocity of droplets and flow rate were obtained. Results show that position, size and velocity of droplets can be obtained simultaneously during a single-shot measurement by the device, which is of great significance to the measurement on spray and the research of electrostatic spray.
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References
|
[1]
|
CHEN X P, CHENG J S, YIN X Z. Research progress and application of electrohydrodynamic[J]. Chinese Science Bulletin, 2003, 48(7):637-646(in Chinese). |
|
[2]
|
CHEN X P, DONG S T, CHENG J S, et al. Electrostatic atomization and the spray modes in fluid atomization[J]. Journal of Experimental Mechanics, 2000, 15(1):97-103(in Chinese). |
|
[3]
|
TANG K, GOMEZ A. On the structure of an electrostatic spray of monodisperse droplets[J]. Physics of Fluids, 1994, 6(7):2317-2332. |
|
[4]
|
GANAN-CALÜO A M, DAVILA J, BARRERO A. Current and droplet size in the electrospraying of liquids scaling laws[J]. Journal of Aerosol Science, 1997, 28(2):249-275. |
|
[5]
|
CHEN X P, CHENG J S, YIN X Z. Measurements of drop velocity in electrospray by PIV[J]. Proceedings of SPIE, 2003, 5058:181-187. |
|
[6]
|
PARRENT G B, THOMPSON B J. On the fraunhofer(far field) diffraction patterns of opaque and transparent objects with coherent background[J]. Optica Acta:International Journal of Optics, 1964, 11(3):183-193. |
|
[7]
|
THOMPSON B J. Holography particle sizing techniques[J]. Journal of Physics,1974,E7(10):781-787. |
|
[8]
|
VIKRAM C S. Particle field holography[M]. NewYork,USA:Cambridge University Press, 1992:71-74. |
|
[9]
|
MURATA S, YASUDA N. Potential of digital holography in particle measurement[J]. Optics & Laser Technology,2000,32(7/8):567-574. |
|
[10]
|
ANEZAKI Y, SHIRABE N, KANEHARA K, et al. 3-D spray measurement system for high density fields using laser holography[J]. DENSO Technoloy Review,2003,8(1):120-129. |
|
[11]
|
ONURAL L, SCOTT P D. Digital decoding of in-line holograms[J]. Optical Engineering, 1987, 26(11):1124-1132. |
|
[12]
|
SCHNARS U, JUPTER W. Digital holography[M]. NewYork,USA:Springer Berlin Heidelberg, 2005:107-111. |
|
[13]
|
XU Q, CAO N, HEI D W, et al. Reconstruction algorithm of particle fields digital holographic diagnosis[J]. Journal of Applied Optics, 2010, 31(6):967-973(in Chinese). |
|
[14]
|
LU Q N, ZHAO C, GE B Z, et al. Digital holography experiment on the measurement of particle size and size distribution of diesel spray[J]. Chinese Journal of Lasers, 2010, 37(3):779-783(in Chinese). |
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