Abstract

The application of holography to the study of burning coal particles in free flight was examined. Resolution to about 3 μm was attained in the combustion zone of a flat flame burner. Both size and velocity of particles up to 75 μm in diameter were measured holographically. Holographic interferometry was also used. Basic combustion events in coal were recorded and are presented here which have not been observed previously. A comparison of images produced by in-line and off-axis holography also resulted from the study.

© 1979 Optical Society of America

Three-dimensional combined pyrometric sizing and velocimetry of combusting coal particles. I. Velocimetry

Pal Toth, Teri Draper, Arpad B. Palotas, Terry A. Ring, and Eric G. Eddings
Appl. Opt. 54(13) 4049-4060 (2015)

Three-dimensional combined pyrometric sizing and velocimetry of combusting coal particles. II: Pyrometry

Pal Toth, Teri Draper, Arpad B. Palotas, Terry A. Ring, and Eric G. Eddings
Appl. Opt. 54(15) 4916-4926 (2015)

Particle velocity distribution measurement by holography

B. C. R. Ewan
Appl. Opt. 18(18) 3156-3160 (1979)

Accurate detection of small particles in digital holography using fully convolutional networks

Xuecheng Wu, Xinwen Li, Longchao Yao, Yingchun Wu, Xiaodan Lin, Linghong Chen, and Kefa Cen
Appl. Opt. 58(34) G332-G344 (2019)

Simultaneous dual-wavelength reflection digital holography applied to the study of the porous coal samples

Alexander Khmaladze, Alejandro Restrepo-Martínez, Myung Kim, Roman Castañeda, and Astrid Blandón
Appl. Opt. 47(17) 3203-3210 (2008)