Vortex Patterns of the Flow in a Curved Duct

摘要：

The vortex patterns of the secondary flow in a curved duct of square cross-section are numerically investigated.The flow is driven by the axial pressure gradient as well as the walls rotation of the duct except the outer wall around the center of curvature.When the rotation is in the same direction as the negative pressure gradient, the secondary flow shows complicated multiple patterns, which consists of two-vortex, four-vortex, eightvortex or even non-symmetric secondary flow pattern. An analysis of linear stability on the flow is also carried out to distinguish possible flow patterns among multiple steady solutions.

关键词： Secondary flow Curved duct screw pump

作者: Xiaoyun Wu Sangding Lai Kyoji Yamamoto Shinichiro Yanase

作者单位: School of Mechanical and Electronic Engineering,Ningbo Dahongying University,Ningbo.315175.China Department of Mechanical Engineering,Faculty of Engineering,Okayama University,Okayama,700-8530,Japa

会议类型: 国际会议

会议名称: 2011 IEEE International Conference on Smart Grid and Clean Energy Technologies(2011 IEEE智能电网与清洁能源技术国际会议 ICSGCE2011)

会议地点: 成都

会议语种:英文

页码: 571-575

在线出版日期: 2011-09-27（万方平台首次上网日期，不代表论文的发表时间）