Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 24    No. 8    August 2014

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Numerical and experimental studies of flow field in hydrocyclone with air core
Bao-yu CUI1, De-zhou WEI1, Shu-ling GAO1, Wen-gang LIU1, Yu-qing FENG2

1. College of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China;
2. CSIRO Computational Informatics, VIC 3169, Australia

Abstract:For the flow field in a d50 mm hydrocyclone, numerical studies based on computational fluid dynamics (CFD) simulation and experimental studies based on particle image velocimetry (PIV) measurement were carried out respectively. The results of two methods show that air core generally forms after 0.7 s, the similar characteristics of air core can be observed. Vortexes and axial velocity distributions obtained by numerical and experimental methods are also in good agreement. Studies of different parameters based on CFD simulation show that tangential velocity distribution inside the hydrocyclone can be regarded as a combined vortex. Axial and tangential velocities increase as the feed rate increases. The enlargement of cone angle and overflow outlet diameter can speed up the overflow discharge rate. The change of underflow outlet diameter has no significant effect on axial and tangential velocities.


Key words: hydrocyclone; computational fluid dynamics; particle image velocimetry; flow field; air core

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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