An interesting feature of jets from liquid-liquid coaxial swirl atomizers used in bipropellant rockets or elsewhere is that the outer jet results in a tulip shaped liquid bulb even at operating pressure levels. In this context, experiments have been performed to study the discharge and tulip characteristics of annular jets through qualitative simulation of outer jet flow conditions at which tulip bulb prevails. It is shown that the discharge coefficient increases steeply with Reynolds number, a trend which is distinct from that of circular orifices. The range of flow conditions at which tulip bulb prevails decreases with the annular gap. If a swirl component is introduced into the annular jet, it alters the discharge characteristics and the tulip range with a tendency to form multiple tulips. Variation of tulip length for different annular gaps shows a common trend when plotted against liquid flow rate. The experimental data of tulip length agree reasonably with the theoretical model reported in literature.
Skip Nav Destination
Article navigation
December 1997
Research Papers
A Study on Converging Thin Annular Jets
D. Sivakumar,
D. Sivakumar
Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560012, India
Search for other works by this author on:
B. N. Raghunandan
B. N. Raghunandan
Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560012, India
Search for other works by this author on:
D. Sivakumar
Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560012, India
B. N. Raghunandan
Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560012, India
J. Fluids Eng. Dec 1997, 119(4): 923-928 (6 pages)
Published Online: December 1, 1997
Article history
Received:
May 14, 1996
Revised:
June 24, 1997
Online:
January 22, 2008
Citation
Sivakumar, D., and Raghunandan, B. N. (December 1, 1997). "A Study on Converging Thin Annular Jets." ASME. J. Fluids Eng. December 1997; 119(4): 923–928. https://doi.org/10.1115/1.2819518
Download citation file:
Get Email Alerts
Cited By
Related Articles
An Investigation on the Discharge Coefficient of Compound Orifices in Rotating Disks
J. Eng. Gas Turbines Power (April,2022)
The Discharge Coefficient of a Planar Submerged Slit-Jet
J. Fluids Eng (July,2003)
Separate Effects of Mach Number and Reynolds Number on Jet Array Impingement Heat Transfer
J. Turbomach (April,2007)
Discharge Coefficient for Free Jets From Orifices at Low Reynolds Number
J. Fluids Eng (December,1993)
Related Proceedings Papers
Related Chapters
Antilock-Braking System Using Fuzzy Logic
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Monte Carlo Trajetory Simulations of a Roll Stabilized 122mm Artillery Rocket
International Conference on Software Technology and Engineering (ICSTE 2012)
PSA Level 2 — NPP Ringhals 2 (PSAM-0156)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)