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- Title
Numerical simulation research on s-shaped elbows polished by abrasive flow based on large eddy simulation.
- Authors
Weihong Zhao; Jiyong Qu; Qifei Peng; Ximing Hui; Junye Li; Dong Liang
- Abstract
To predict and improve the surface quality of complex curved surface structure precision machined by solid-liquid two-phase abrasive flow, this paper takes the S-shaped elbow as the research object, carries out the numerical simulation of abrasive flow polishing process of S-shaped elbow based on large eddy simulation method, analyzes the velocity distribution of abrasive flow, turbulent energy, wall shear force nephogram and trace diagram of abrasive flow in the S-shaped elbow under different inlet speed and abrasive concentration conditions. It is found that the values of velocity, turbulent energy and wall shear force on the inner side of the elbow and the outlet pipe are relatively large, indicating that the polishing quality at these positions is better. Increasing the inlet velocity can improve the effectiveness of abrasive flow polishing, and properly increasing the abrasive concentration can improve the surface uniformity of polished wall. It can provide a theoretical basis for promoting the continuous improvement of abrasive flow precision machining technology.
- Subjects
LARGE eddy simulation models; WATER jets; COMPUTER simulation; ELBOW; TWO-phase flow
- Publication
Vibroengineering Procedia, 2020, Vol 33, p153
- ISSN
2345-0533
- Publication type
Article
- DOI
10.21595/vp.2020.21592