Experimental study of gas-solid flow characteristics and flow-vibration coupling in a full loaded inclined pipe
| Autor: | Chaoyu Yan, Ruina Xu, Yaodong Wei, Jia Mengda, Pei-Xue Jiang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering Flow (psychology) 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Physics::Fluid Dynamics Vibration 020401 chemical engineering Mass flow rate Coupling (piping) Dynamic pressure Fluidization 0204 chemical engineering Stratified flow 0210 nano-technology Displacement (fluid) |
| Zdroj: | Powder Technology. 384:379-386 |
| ISSN: | 0032-5910 |
| Popis: | The inclined pipe is widely used as a downward particle-conveying structure. Bubbles accompanying with the descending particles always induce complex flow pattern and pipe vibration, which would shorten the service life of equipment. In this paper, the gas-solid interaction and fluid-vibration coupling were experimentally studied by analyzing dynamic pressure and displacement of an inclined pipe. The results showed that, with increased mass flow rate, there was a progressive gas-solid flow behavior in the inclined pipe due to the water-pouring phenomenon. With the generation and upward channeling flow of bubbles, the downward particle flow showed an unstable motion, causing pressure fluctuations and severe vibration of the pipe system. Downward behavior of particles in the inclined pipe were eventually divided into three flow patterns: (1) creeping stratified flow, (2) gas channeling flow, and (3) dense phase fluidization flow. This work can provide theoretical basis for the design and operation of inclined pipe. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect