Abstract
In this study, the simultaneous measurement technique for three-dimensional density and three-dimensional velocity distributions was evaluated. The Holographic Particle Image Velocimetry (HPIV) was the technique to record the three-dimensional position of the tracer particle on the hologram. When there were density distributions in the interrogation region, the plane optical wave may be modulated because of the difference of the refraction indices. Then, both of the plane wave modulated by density and the spherical wave by particle scatter were interfered with the reference beam, being recorded on the hologram. With reconstructing the hologram, the both of the modulated plane wave and spherical wave were reconstructed. Since the plane wave and spherical wave had low and high frequency, respectively, the two information could be separated using low-pass and high-pass filter. In the experiment, a jet of carbon-dioxide into air with mist were measured. Both mist particle position and the fringe shift caused by the density distribution were well observed, showing the effectiveness of the proposed technique. (author)
Okamoto, Koji;
Ikeda, Koh;
Madarame, Haruki
[1]
- Tokyo Univ., Tokai, Ibaraki (Japan). Nuclear Engineering Research Lab.
Citation Formats
Okamoto, Koji, Ikeda, Koh, and Madarame, Haruki.
Extraction of density distributions and particle locations from hologram images.
Japan: N. p.,
1996.
Web.
Okamoto, Koji, Ikeda, Koh, & Madarame, Haruki.
Extraction of density distributions and particle locations from hologram images.
Japan.
Okamoto, Koji, Ikeda, Koh, and Madarame, Haruki.
1996.
"Extraction of density distributions and particle locations from hologram images."
Japan.
@misc{etde_489225,
title = {Extraction of density distributions and particle locations from hologram images}
author = {Okamoto, Koji, Ikeda, Koh, and Madarame, Haruki}
abstractNote = {In this study, the simultaneous measurement technique for three-dimensional density and three-dimensional velocity distributions was evaluated. The Holographic Particle Image Velocimetry (HPIV) was the technique to record the three-dimensional position of the tracer particle on the hologram. When there were density distributions in the interrogation region, the plane optical wave may be modulated because of the difference of the refraction indices. Then, both of the plane wave modulated by density and the spherical wave by particle scatter were interfered with the reference beam, being recorded on the hologram. With reconstructing the hologram, the both of the modulated plane wave and spherical wave were reconstructed. Since the plane wave and spherical wave had low and high frequency, respectively, the two information could be separated using low-pass and high-pass filter. In the experiment, a jet of carbon-dioxide into air with mist were measured. Both mist particle position and the fringe shift caused by the density distribution were well observed, showing the effectiveness of the proposed technique. (author)}
place = {Japan}
year = {1996}
month = {Oct}
}
title = {Extraction of density distributions and particle locations from hologram images}
author = {Okamoto, Koji, Ikeda, Koh, and Madarame, Haruki}
abstractNote = {In this study, the simultaneous measurement technique for three-dimensional density and three-dimensional velocity distributions was evaluated. The Holographic Particle Image Velocimetry (HPIV) was the technique to record the three-dimensional position of the tracer particle on the hologram. When there were density distributions in the interrogation region, the plane optical wave may be modulated because of the difference of the refraction indices. Then, both of the plane wave modulated by density and the spherical wave by particle scatter were interfered with the reference beam, being recorded on the hologram. With reconstructing the hologram, the both of the modulated plane wave and spherical wave were reconstructed. Since the plane wave and spherical wave had low and high frequency, respectively, the two information could be separated using low-pass and high-pass filter. In the experiment, a jet of carbon-dioxide into air with mist were measured. Both mist particle position and the fringe shift caused by the density distribution were well observed, showing the effectiveness of the proposed technique. (author)}
place = {Japan}
year = {1996}
month = {Oct}
}