Abstract
The effect of the shape near the trailing edge of a rotating flat-plate blade on the periodic velocity fluctuation of the wake of the blade has been experimentally investigated. The results show that the characteristics of the near wake in the rotating flow field are similar to those in the uniform flow field; i.e., periodic velocity fluctuation does not occur when the suction surface of the blade is beveled near the trailing edge, but occurs if the pressure surface is beveled. In the latter case, two types of trailing edge separation generally occur: that is, the flow always adheres up to the trailing edge of the suction-side-beveled blade. On the other hand, the flow separation alternately and randomly occurs at two different locations, either the starting point of the beveling of the blade or a certain fixed point on the beveled surface in the case of a pressure side beveled blade. The important role of the periodic velocity fluctuation in the generation of broadband noise from a rotating flat-plate blade is also verified.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
