期刊文献+

Study on topology and vortex structure in a diffusion cascade 被引量:1

Study on topology and vortex structure in a diffusion cascade
原文传递
导出
摘要 To further make clear vortex structures in diffusion cascades so as to help understand the mechanisms of vortex affecting loss production, the emergence, evolution and development of secondary flow vortexes, including horse shoe vortex, passage vortex and corner vortex and so on, were discussed mainly through using the topological analysis method and numerical calculation. The concept of a three-dimensional dividing surface between the low energy flow zone and the exterior flow zone was presented. The results show that concentrated shed vortex is located outside the dividing surface (in the outer flow zone) and horse shoe vortex, passage vortex and corner vortex are inside the dividing surface (in the low energy flow zone). Dissipation function is used to measure loss production instead of using entropy production. The results about loss analysis indicate that vortex motion directly causes loss production, namely, peak value of loss is generally located around the core of vortex and that maximal loss happens around the dividing surface other than in the low energy flow zone. To further make clear vortex structures in diffusion cascades so as to help understand the mechanisms of vortex affecting loss production, the emergence, evolution and development of secondary flow vortexes, including horse shoe vortex, passage vortex and corner vortex and so on, were discussed mainly through using the topological analysis method and numerical calculation. The concept of a three-dimensional dividing surface between the low energy flow zone and the exterior flow zone was presented. The results show that concentrated shed vortex is located outside the dividing surface (in the outer flow zone) and horse shoe vortex, passage vortex and corner vortex are inside the dividing surface (in the low energy flow zone). Dissipation function is used to measure loss production instead of using entropy production. The results about loss analysis indicate that vortex motion directly causes loss production, namely, peak value of loss is generally located around the core of vortex and that maximal loss happens around the dividing surface other than in the low energy flow zone.
出处 《Science China(Technological Sciences)》 SCIE EI CAS 2009年第8期2305-2315,共11页 中国科学(技术科学英文版)
基金 Supported by the National Natural Science Fundation of China (Grant No. 90718025)
关键词 DIFFUSION CASCADE TOPOLOGY analysis VORTEX structure DISSIPATION FUNCTION diffusion cascade topology analysis vortex structure dissipation function
  • 相关文献

二级参考文献6

  • 1秦元勋,微分方程所定义的积分曲线,1959年
  • 2Carter C J, Guillot S A, Ng W F. Aerodynamic Performance of a High-Turning Compressor Stator with Flow Control. AIAA 2001-3973, 2001
  • 3Sasaki'T, Breugelmans F A E. Comparison of Sweep and Dihedral Effects on Compressor Cascade Performance.Transactions of ASME Journal of Turbormachinary, 1998,120(2): 454-463
  • 4Weingold H D, Neubert R J, et al. Reduction of Compressor Stator Endwall Losses Through the Use of Bowed Stators. ASME 95-GT-380, 1995
  • 5Shang E B, Wang Z Q, Su J X. The Experimental Investigations on the Compressor Cascades with Leaned and Curved Blade. ASME 93-GT-50, 1993
  • 6王东,钟兢军,苏杰先,王仲奇.环型扩压叶栅中应用弯曲叶片的研究[J].高技术通讯,2000,10(3):90-94. 被引量:2

共引文献34

同被引文献14

引证文献1

二级引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部