中国塑料 ›› 2025, Vol. 39 ›› Issue (6): 48-53.DOI: 10.19491/j.issn.1001-9278.2025.06.010

• 加工与应用 • 上一篇    下一篇

基于CFD⁃DPM的水下切粒机流场分析及进出口角度优化

关红艳(), 杨文强, 张国强   

  1. 兰州交通大学机电工程学院,兰州 730070
  • 收稿日期:2024-06-17 出版日期:2025-06-26 发布日期:2025-06-20
  • 作者简介:关红艳,副教授,从事化工流体机械研究,466625018@qq.com
  • 基金资助:
    甘肃省自然科学基金(21JR7RA302)

Flow field analysis and inlet angle optimization of underwater pelletizer based on CFD⁃DPM

GUAN Hongyan(), YANG Wenqiang, ZHANG Guoqiang   

  1. College of Electromechanical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China
  • Received:2024-06-17 Online:2025-06-26 Published:2025-06-20

摘要:

基于CFD⁃DPM的模拟方法,分析了不同进水口角度下切粒机水室内的颗粒流动状态和出口颗粒逃逸数量,研究了不同进口角度时在相同时间变化内的颗粒逃逸平均数量,使用3次样条插值的曲线拟合方式最终确定了水室的最佳进水口角度。结果表明,将水下切粒机水室进水口定为80°(将原型进口逆时针旋转10°)时在相同时间变化内水室出口的颗粒逃逸平均数量最大。

关键词: CFD?DPM, 逃逸数量, 3次样条插值, 最佳进水口角度, 切粒机

Abstract:

Based on the simulation method of CFD⁃DPM, we analyzed the particle flow state and the number of particles escaping from the water chamber of the underwater pelletizer under different inlet angles, and studied the average number of particles escaping from the water chamber within the same time change at different inlet angles, and then determined the optimal inlet angle of the water chamber by using the curve fitting method of cubic spline interpolation. The results show that when the inlet of the water chamber of the underwater pelletizer is set at 80° (the inlet of the prototype is rotated counterclockwise by 10°), the average number of particles escaping from the outlet of the water chamber is the largest within the same time change.

Key words: CFD?DPM, number of escapes, cubic spline interpolation, optimal inlet angle, pelletizer

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