Studies of granular flow down an inclined chute. Quarterly technical progress report: Year four, Quarter two, 13 March--12 June 1994

Technical Report · Thu Sep 01 04:00:00 EDT 1994

DOI:https://doi.org/10.2172/10182964· OSTI ID:10182964

Hanes, D M

The primary focus in the granular flow project this quarter has been the study of a new closer packed bumpy chute bed. Qualitative experiments were performed to map out the flow characteristics for a range of angles and gate heights. For chute inclinations from 16.0 to 24.5 with 0.5 degree increments and gate heights of 0.5, 1.0, 1.5, 2.0 and infinity, the following physical data was collected: flow thickness, mass in chute sections, and mass in belt. A grid was placed on the side wall of one chute section and the profile of particles accumulated on one of the gates was recorded on Hi-8 video. The above information was used to determine what conditions created steady flow. These initial studies have indicated that steady flow for this bumpy chute bed were found at chute inclinations of 20.5 to 21.5 degrees and 22.5 to 23.5 degrees. Another focus of the project was the development of an entrance vibration chamber. This project has been completed and is currently being tested. The chamber consists of a vertically vibrating plate powered by a DC motor. The amplitude range is 0.0--5.0 mm and frequency range is 2.0--20.0 Hz. The vibrating plate is set at an angle of 16.0 degrees and protrudes slightly into the chute. The chamber was designed for variable plate surfaces. An uncertainty analysis was performed on all data and can be seen in the tables.

• Research Organization: Florida Univ., Gainesville, FL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-91PC90182
• OSTI ID: 10182964
• Report Number(s): DOE/PC/90182--T14; ON: DE94018857; BR: AA1510050
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000
EXPERIMENTAL DATA
FLOW VISUALIZATION
GRANULAR MATERIALS
INCLINATION
MASS TRANSFER
MATERIALS HANDLING EQUIPMENT
PROGRESS REPORT
SOLIDS FLOW
TRANSPORT, HANDLING, AND STORAGE