Abstract
A doublet flow or a coaxial flow consisting of injection and suction flow, which is proposed for the purpose of diffusion control of a circular jet, was experimentally examined. In order to clarify the behavior of such flow, the correlations of fluctuating velocity in the streamwise and transverse direction were measured and the flow visualization technique was also used. It was clarified from these experiments that as the suction velocity increases, diffusion of the circular jet is promoted because the scale of vortical structure in the shear layer becomes large due to the strong shear stress. It was found from the results of the cross correlations of fluctuating velocity that asymmetrically ejected vortices exist and contribute strongly to diffusion of the jet. Furthermore, this phenomenon of asymmetrically ejected vortices moves gradually upstream as the suction velocity increases.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: 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.