期刊名称：International Journal of Educational Research and Technology
印刷版ISSN：0976-4089
出版年度：2012
卷号：3
期号：3
页码：24-31
出版社：Society of Education
摘要：Swirling flow generates rotating flows, turbulence and free jet wakes at the downstream of swirler in combustion chamber. The core objective of this study is to present the details of the experimental procedure and measurements made in an axisymmetric swirler model. The flow through 6 and 8 blades 45¡ã vane swirler is studied experimentally. An overlap angle of 30¡ã is provided between the vanes for the proper guidance of the flow through swirler. A hemi spherical bluff body is attached to the hub in order to overcome the inlet flow field distortion. A 6.5 mm diameter five-hole probe has been used. A traversing mechanism is used to control the traversing of the probe. The recirculation velocities at the centrecore and corner regions are well captured with the five-hole probe. Five-hole pitot probe measurements along the entire length of the model at different stations, allow the determination of axial mean velocity component and pressure field parameters, which provide comprehensive information to aid and understand such complex recirculation flows. Flow field characteristics downstream of the swirler at different axial locations are examined in detail. The recirculation length and width are found to be strongly dependent on the amount of turbulence created by the vane swirler
