Numerical Optimization for Bottom Structure of ZGM Medium Speed Mill

Abstract:

The inner flow fields in the ZGM95 medium speed mill are numerically simulated by employing the commercial code of FLUENT. The results show that the static pressure and the flow rate at each nozzle ring is different from those of others due to the primary air entering the mill only from one side. Some baffles are proposed to be added in the bottom chamber of the mill to optimize the performance of medium speed mill, and the modified models are also simulated. A couple of fan-shaped baffles, which are arranged symmetrically in the bottom chamber, can improve the distribution of the flow fields efficiently in the mill while few pressure drop of the mill will increase. The structure with fan-shaped baffles is recommended to be an important choice of the structural optimization of the medium speed mill. The numerical investigations also indicate that the structural modification of mill should be as simple as possible.

• Periodical: Applied Mechanics and Materials (Volumes 672-674)
• Pages: 1656-1661
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.672-674.1656
• Online since: October 2014
• Authors: Xian Ran Zhu*, Cheng Yong Liu, Liang Cheng
• Keywords: Medium Speed Mill, Nozzle Ring, Numerical Simulation, Structural Optimization

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