Trajectory and velocity measurement of a particle in spray by digital holography
We present a method for the trajectory and the velocity measurement of a particle in spray by digital holography. Based on multiple exposure digital in-line holography, a sequence of digital holograms of a dynamic spray particle field at different times are recorded with a CW laser and a high-speed CCD. The time evolution of the serial positions of particles, i.e., the motion trajectories of the particles, is obtained by numerically reconstructing the synthetic hologram of a sequence of digital holograms. The center coordinate (x,y) of each particle image can be extracted using a Hough transform and subpixel precision computing, and the velocity of an individual particle can also be obtained, which is then applied to measuring the velocity of diesel spray and alcohol spray. The research shows that the method presented in this paper for measuring spray field is feasible.
- OSTI ID:
- 22036501
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 36 Vol. 48; ISSN 0003-6935; ISSN APOPAI
- Country of Publication:
- United States
- Language:
- English
Similar Records
Insect Wing Displacement Measurement Using Digital Holography
Acquisition and replay systems for direct-to-digital holography and holovision
Particle distribution measurements using in line Fraunhofer holography
Journal Article
·
Tue Apr 15 00:00:00 EDT 2008
· AIP Conference Proceedings
·
OSTI ID:21137081
Acquisition and replay systems for direct-to-digital holography and holovision
Patent
·
Tue Dec 31 23:00:00 EST 2002
·
OSTI ID:875078
Particle distribution measurements using in line Fraunhofer holography
Conference
·
Tue Oct 01 00:00:00 EDT 1996
·
OSTI ID:432874