Pressure Drop and Fluid Flow Characteristics in a Packed Pebble Bed Reactor
| Autor: | Rahman S. Abdulmohsin, Muthanna H. Al-Dahhan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Pressure drop
Nuclear and High Energy Physics Chromatography Materials science Turbulence 020209 energy Laminar flow 02 engineering and technology Mechanics Condensed Matter Physics Pressure sensor Kozeny–Carman equation 020401 chemical engineering Nuclear Energy and Engineering Heat transfer 0202 electrical engineering electronic engineering information engineering Fluid dynamics Flow coefficient 0204 chemical engineering |
| Zdroj: | Nuclear Technology. 198:17-25 |
| ISSN: | 1943-7471 0029-5450 |
| DOI: | 10.1080/00295450.2017.1292818 |
| Popis: | In the dynamic core of nuclear pebble bed reactors, the prediction of the fluid flow within the packing determines the heat transfer characteristics and, hence, the performance of these reactors.The fluid flow of the gas phase can be characterized and quantified in terms of the pressure drop coefficient. Therefore, in this work, the pressure drop in a packed pebble bed having different aspect ratios (ratio of the diameter of the bed to the diameter of the pebbles) has been measured experimentally in a separate-effects pilot-plant scale and cold-flow experimental setup of 0.3 m in diameter using a differential pressure transducer technique. The effects of superficial gas velocity have been investigated using a range of velocities from 0.01 to 2 m/s covering both the laminar and turbulent flow regimes. In addition, the effect of bed structure (aspect ratio) on the pressure drop coefficient has been investigated for the studied packed pebble bed. The results show the strong dependence of the pressure... |
| Databáze: | OpenAIRE |
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