Characteristics of Embedded-Shock-Free Compressible Vortex Rings : A Detailed Study Using PIV
Joint Authors
Das, Debopam
Karunakar, K.
Dora, C. Lakshmana
Saravanan, D.
Source
Advances in Mechanical Engineering
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-05-31
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The present study focus on evolution of compressible vortex ring generated at the open end of a shock tube through accurate measurement of velocity field using Particle Image Velocimetry (PIV).
To investigate the unsteady characteristics of embedded shock-free, low Mach number vortex rings, two cases (shock Mach numbers, M=1.27 and M=1.37) are considered for PIV measurements.
Time-dependent variations of circulation, core and ring diameters, and ring velocity are calculated from the measured velocity field.
Pinching-off process is investigated in detail for both cases.
Formation time and the time of complete detachment of the vortex ring from the trailing jet are identified from the velocity and vorticity field.
The ring formation is complete at about t*(=tUb/D)=1.75 and 1.65 for M=1.27 and 1.37, respectively, where t is time, Ub is fluid velocity behind the shock at exit, and D is tube diameter.
Complete detachment of the vortex ring from the trailing jet is observed at t∗=2 and 2.9 for M=1.27 and 1.37, respectively.
American Psychological Association (APA)
Dora, C. Lakshmana& Saravanan, D.& Karunakar, K.& Das, Debopam. 2011. Characteristics of Embedded-Shock-Free Compressible Vortex Rings : A Detailed Study Using PIV. Advances in Mechanical Engineering،Vol. 2011, no. 2011, pp.1-13.
https://search.emarefa.net/detail/BIM-488261
Modern Language Association (MLA)
Dora, C. Lakshmana…[et al.]. Characteristics of Embedded-Shock-Free Compressible Vortex Rings : A Detailed Study Using PIV. Advances in Mechanical Engineering No. 2011 (2011), pp.1-13.
https://search.emarefa.net/detail/BIM-488261
American Medical Association (AMA)
Dora, C. Lakshmana& Saravanan, D.& Karunakar, K.& Das, Debopam. Characteristics of Embedded-Shock-Free Compressible Vortex Rings : A Detailed Study Using PIV. Advances in Mechanical Engineering. 2011. Vol. 2011, no. 2011, pp.1-13.
https://search.emarefa.net/detail/BIM-488261
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-488261