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Studies of granular flow down an inclined chute. Quarterly technical progress report: Year four, Quarter two, 13 March--12 June 1994
| 题名： | Studies of granular flow down an inclined chute. Quarterly technical progress report: Year four, Quarter two, 13 March--12 June 1994 |
| 作者： | Hanes, D.M.; |
| 关键词： | 01 COAL, LIGNITE, AND PEAT; GRANULAR MATERIALS; SOLIDS FLOW; PROGRESS REPORT; INCLINATION; MATERIALS HANDLING EQUIPMENT; MASS TRANSFER; FLOW VISUALIZATION; EXPERIMENTAL DATA |
| 摘要： | 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. |
| 总页数： | 4p |
| 报告类型： | 科技报告 |
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