DOI QR코드

DOI QR Code

Optimization analysis on collection efficiency of vacuum cleaner based on two-fluid and CFD-DEM model

  • Wang, Lian (School of Civil Engineering, Wuhan University) ;
  • Chu, Xihua (School of Civil Engineering, Wuhan University)
  • 투고 : 2019.05.05
  • 심사 : 2019.06.03
  • 발행 : 2020.07.25

초록

The reasonable layout of vacuum cleaner can effectively improve the collection efficiency of iron filings generated in the process of steel production. Therefore, in this study, the CFD-DEM coupling model and two-fluid model are used to calculate the iron filings collection efficiency of vacuum cleaner with different inclination/cross-sectional area, pressure drop and inlet angle. The results are as follows: The CFD-DEM coupling method can truly reflect the motion mode of iron filings in pneumatic conveying. Considering the instability and the decline of the growth rate of iron filings collection efficiency caused by high pressure drop, the layout of 75° inclination is suggested, and the optimal pressure drop is 100Pa. The optimal simulation results based on two-fluid model show that when the inlet angle and pressure drop are in the range of 45°~65° and 70Pa~100Pa, larger mass flow rate of iron filings can be obtained. It is hoped that the simulation results can offer some suggestion to the layout of vacuum cleaner in the rolling mill.

키워드

과제정보

The authors are pleased to acknowledge the support by the National Natural Science Foundation of China [grant numbers: 11472196, 11172216 and 11772237].

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