Collaborative research on fluidization employing computer-aided particle tracking. Final report
Discussions presented in this report highlight all the important considerations for making particle dynamics measurements using the radioactive active particle tracking methodology. It is seen that the technique makes it possible to obtain data which are not accessible by any other means. Among the advantages of the methods are: (1) It is completely uninvasive, and hence cannot disturb the flow. (2) It can penetrate opaque suspensions. (3) It yields detailed, spatially resolved (subject to resolution limitations) data on mean velocity and density distributions as well as other statistical quantities. Its disadvantages are: (1) It can only provide time averaged data. It cannot provide instantaneous ``snap shots`` of the flow field. (2) It cannot yield information of flows around bubbles, which are of great interest in fluidization theories. (3) It has only modest resolution -- of the order of a two to four percent of the flow field. However, the resolution can be improved by almost an order of magnitude, if long test runs can be used to acquire data of high statistical quality. 4. For data of adequate resolution, long test runs -- several hours and up - are needed. Clearly if used with a clear understanding of its capabilities as well as limitations, the radioactive particle tracking technique can make possible measurements which are not possible by any other method, and contribute significantly to the study of suspension flows.
- Research Organization:
- Illinois Univ., Urbana, IL (United States). Dept. of Mechanical and Industrial Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC21-88MC25048
- OSTI ID:
- 10142010
- Report Number(s):
- DOE/MC/25048-3102; ON: DE93000274
- Resource Relation:
- Other Information: PBD: Apr 1993
- Country of Publication:
- United States
- Language:
- English
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Collaborative research on fluidization employing computer-aided particle tracking
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99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
FLUIDIZED BEDS
PARTICULATES
VELOCITY
DENSITY
PROGRESS REPORT
TRACER TECHNIQUES
ELECTRONIC CIRCUITS
TIME DEPENDENCE
RADIOACTIVITY
GAMMA RADIATION
SCANDIUM 46
SCINTILLATION COUNTERS
014000
990200
COMBUSTION
MATHEMATICS AND COMPUTERS