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The effects of top blade rotation of hydro-cyclones on particle classification performance were examined experimentally and via a simulation study.It was noticed that the cut size of a hydro-cyclone decreases as the rotational speed of the top plate increases. Compared to the standard case without rotation, the accuracy of classification with top plate rotation increases under the wide range of operational conditions.Newly proposed type-D cyclones with a special blade indicated the smallest cut size with a high accuracy of classification. The increase of classification accuracy is due to the production of outward radial flow near the top plate and this result was simulated by a CFD calculation.The computer simulation also agreed qualitatively with the experimental data. 相似文献
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Hideto Yoshida Shinsuke Yoshikawa Kunihiro Fukui Tetsuya Yamamoto 《Powder Technology》2008,184(3):352-360
The effect of multi-inlet flow on particle classification performance of hydro-cyclones was examined experimentally and via a simulation study. Cut size of the type A cyclone with two inlets flow indicated smaller cut size and sharp separation performance compared to the standard cyclone. Numerical simulation indicated a nearly uniform rotational fluid velocity profile for the type A cyclone. On the other hand, the standard cyclone showed a non-uniform rotational velocity profile near the inlet part of the main flow. The type B cyclone with a small additional flow injection area, showed smaller cut sizes as the flow rate of the additional flow increased. The type B cyclone showed smaller cut size compared to the standard cyclone without the additional flow. The use of a multi-inlet cyclone is quite effective at improving particle separation performance compared to the standard one. 相似文献
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