期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 24, 期 8, 页码 2642-2649出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(14)63394-X
关键词
hydrocyclone; computational fluid dynamics; particle image velocimetry; flow field; air core
资金
- National Natural Science Foundation of China [50974033, 51104035]
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.
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