| 刘宵,尹洪超,穆林.基于欧拉-欧拉方法的细长管道内磨粒流加工数值模拟研究[J].,2021,61(2):143-150 |
| 基于欧拉-欧拉方法的细长管道内磨粒流加工数值模拟研究 |
| Numerical simulation research of abrasive flow machining in slender pipe based on Euler-Euler method |
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| DOI：10.7511/dllgxb202102005 |
| 中文关键词: 磨粒流加工 欧拉-欧拉方法 细长圆管 数值模拟 |
| 英文关键词: abrasive flow machining Euler Euler method slender round tube numerical simulation |
| 基金项目:中央高校基本科研业务费专项资金资助项目(DUT20LAB134). |
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| 中文摘要: |
| 以CFD理论和仿真软件为基础，建立了基于欧拉-欧拉方法的流体仿真计算模型，开展了不同管型的细长圆管磨粒流抛光加工过程的模拟研究．以Preston方程为评价依据，分析了磨粒粒径、流体介质对抛光效果的影响规律，得到了不同磨粒流参数下的圆管内壁抛光程度沿圆管轴向的变化趋势．其次，根据所建立的仿真计算模型得到了流体相和固体相对圆管内壁磨削效果的差异化特性，分析了在流道局部突变位置流、固相产生较大差异的原因．最后，通过改变磨粒流入口温度，得到了温度分布云图和不同温度下的抛光特性曲线，为细长型流道工件的磨粒流加工提供了改进和优化方向． |
| 英文摘要: |
| According to CFD theory and simulation software, a fluid simulation calculation model was established on the basis of Euler Euler method, and the abrasive flow polishing process of slender round tubes with different types was studied numerically. Taking the Preston equation as evaluation basis, the influences of abrasive particles sizes, and fluid medium on the polishing effect were analyzed, and the change trends of the polishing effect of the inner wall of the tube along the axial direction of the tube under different abrasive flow parameters were obtained. Furthermore, according to the established simulation calculation model, the differential characteristics of the polishing effect of the fluid phase and the solid phase to the inner wall of the tubes were obtained, and the reasons for the difference between the fluid phase and the solid phase at the local position of the flow channel were analyzed. In addition, by changing the temperature of the inlet of abrasive flow, the temperature distribution cloud map and the polishing characteristic curves at different temperatures were obtained, which provides an improvement and optimization direction for the abrasive flow machining of the slender flow channel components. |
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