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Visualization of Particle Behavior near the Wall of a CFB

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 42 Issue 2 Page 257-262
published_at 1992-03
KJ00000156892.pdf
[fulltext] 513 KB
Title
循環流動層壁近傍落下粒子の流動挙動の可視化
Visualization of Particle Behavior near the Wall of a CFB
Creators Katoh Yasuo
Creators Miyamoto Masahide
Source Identifiers
The particle behavior near the wall of a circulating fluidized bed has a significant effect on the heat transfer characteristics and material erosion in the fluidized bed. Visualization of the particle behavior proves useful in understanding the hydrodynamics involved. In this study we used photography to study the particle behavior near the wall for two configurations. In one case, the model wall was in an inclined position and the particle behavior of a falling thin film of particles was observed. In the other case, the vertical wall of a circulating fluidized bed at atmospheric pressure was observed. Both experimental cases were conducted with and without an obstacle step on the wall. It was found that the individual particles forming a flow stream had a random behavior. With a thin step at the wall a serious disruption of the flow over the step and downstream of the step is produced.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1992-03
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部