Mechanics/heat-transfer relation for particulate materials
This investigation attempts to explore the effect of the mechanical behavior of particle-fluid systems on their apparent thermal behavior. Three cases will be studied. The first two will examine the relationship between the particle-pressure and the heat transfer in gas and liquid fluidized beds. (Both gas and liquid fluidized beds will be studied to try and ascertain the effects of bubbling --- which appears in gas-fluidized beds but is generally absent if the continuous phase is a liquid --- on the particle pressure and its effects on the heat transfer.) The last will study the effective thermal conductivity of suspensions as they are sheared in a coaxial cylinder rheometer. This quarter, we have done extensive testing of the particle pressure transducer tried to determine the length scale on which the particle pressure depends and it appears to be the bubble size, and we have been developing a new transducer that will be usable in liquid as well as gas fluidized beds. We have also built the shear cell in which we will determine the thermal conductivity of suspensions and are currently calibrating the heaters. 6 figs.
- Research Organization:
- University of Southern California, Los Angeles, CA (USA). Dept. of Mechanical Engineering
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- FG22-88PC88913
- OSTI ID:
- 5394546
- Report Number(s):
- DOE/PC/88913-T4; ON: DE90004261
- Country of Publication:
- United States
- Language:
- English
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