期刊
ANNALS OF NUCLEAR ENERGY
卷 115, 期 -, 页码 195-208出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anucene.2018.01.040
关键词
Non-spherical particles; Drag coefficient; Numerical simulation; Body-fitted method
资金
- National Natural Science Foundation of China (NSFC) [51676112]
- Natural Key R&D Program of China [2016YFC0202700]
- National ST Major Project [ZX06901]
The present study analyzed the drag coefficient of simplified graphite dust particles in an HTGR using a computational fluid dynamics (CFD) model. The effects of the particle Reynolds number, flow angle and the percentage contribution of the drag coefficient are discussed. The results show that the drag coefficient for irregular particles decreases with increasing particles Reynolds number but increasing with increasing flow angle. The friction on the micron particles is the main component of the total force, while the effect of the flow angle on the drag coefficient contributes to the pressure drag. The results are correlated into accurate correlations based on the specific particles analyzed here. (C) 2018 Elsevier Ltd. All rights reserved.
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