Numerical investigation of the flow field inside and outside high-pressure abrasive waterjet nozzle

摘要：

Numerical simulation was performed for the flow field inside and outside high-pressure abrasive waterjet nozzle under submerging conditions based on Fluent software. RNG κ-ε turbulent model and Simple algorithm were selected for numerical simulation. The simulation results indicate that, there exist free jet zone, shock zone and wall jet zone in the external flow field of nozzle; the portion of abrasive jet farther from the target wall is of free jet structure; the shock pressure field on the target wall is normal distribution; the best shock range is 2-7 times the exit diameter of nozzle; the shock pressure of jet is proportional to the inlet pressure, and is inversely proportional to the range.

关键词： high-pressure abrasive waterjet range flow field shock pressure

作者: NIE Baisheng WANG Hui LI Lei ZHANG Jufeng YANG Hua LIU Zhen WANG Longkang Li Hailong

作者单位: China University of Mining & Technology (Beijing) Beijing 100083, China Human Mining Group, Anhui 232001, China Jingyuan Coal Group Co. Ltd., Baiyin Gansu 730913, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 1228-1235

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）