摘要
为了提高井下泥浆涡轮的水力性能,采用NACA翼型+前弯叶片代替圆弧平板直叶片,数值模拟研究改造前后井下泥浆涡轮的内部流场和水力性能。结果表明采用NACA翼型+前弯叶片,能够有效地增加转叶压力面与吸力面的压差,降低转叶出口的能量损失,提高涡轮的输出轴功率和效率,降低涡轮进出口的压降。并通过性能试验,验证改造前后涡轮水力性能的改善效果。
To improve the hydraulic performance of the downhole mud turbine, using NACA wing ＋ front curved blades re placed the circular fiat straight blades, the numerical simulation was used to investigate the internal flow field and hydraulic per formance of the downhole mud turbine transformation. The results show that the use of NACA wing ＋ front curved blades can ef fectively increase the pressure difference between the pressure faee and suction faee, reduce the energy loss at the export of run ner blades, increase the output shaft power and efficiency of the turbine, and reduce the pressure drop of the turbine inlet and outlet. The improvement of hydraulic performance on the downhole mud turbine was verified by the performance test.
出处
《流体机械》
CSCD
北大核心
2012年第8期13-16,共4页
Fluid Machinery
基金
华中科技大学研究生科技创新基金资助项目(HF-08-12-2011-121)
关键词
泥浆涡轮
水力性能
数值模拟
性能试验
mud turbine
hydraulic performance
numerical simulation
performance test
