Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.5

ISSN Print: 1065-3090
ISSN Online: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v7.i4.30
16 pages

LASER DIAGNOSTICS OF TRANSVERSE TURBULENT JETS

V. Sivadas
Department of Mechanical Engineering, Institute Superior Tecnico, Av.Rovisco Pais, 1049-001, Lisbon, Portugal
B. S. Pani
Department of Civil Engineering, Indian Institute of Technology, Bombay-400 076, India
K. A. Butefisch
Institute of Fluidmechanics, DLR, D-37073, Gottingen, Germany

ABSTRACT

Experiments were conducted in a low-speed wind tunnel to understand the influence of nozzle geometry on the flow characteristics of incompressible air jets injected normal to a free stream. Jets issuing from circular and noncircular nozzles, with exit Reynolds number in the range of 4500 to 9200 and velocity ratios from 3.8 to 7.7, are investigated. Measurements, in the zone of established flow, are carried out by laser light sheet flow visualization coupled with image processing and laser Doppler anemometry techniques. Results show that with increasing aspect-ratio of the nozzles the jet penetration increases and carries stronger bound vortex-pairs compared with the circular case. The deflected circular and square jets exhibit similar flow characteristics.


Articles with similar content:

LASER DIAGNOSTICS OF TRANSVERSE TURBULENT JETS
Journal of Flow Visualization and Image Processing, Vol.8, 2001, issue 4
V. Sivadas, B. S. Pani, K. A. Butefisch
X-RAY PHASE CONTRAST IMAGING OF CAVITATION AND DISCHARGED LIQUID JET IN NOZZLES WITH VARIOUS SIZES
Atomization and Sprays, Vol.29, 2019, issue 1
Akira Sou, Yoshitaka Wada, Hideaki Yokohata, Rubby Prasetya, Seoksu Moon, Raditya Hendra Pratama
THREE DIMENSIONALITY IN THE NEAR FIELD OF A ROUND JET
TSFP DIGITAL LIBRARY ONLINE, Vol.2, 2001, issue
Ivan Marusic, Ellen K. Longmire, Arnauld Loyer, Bharath Ganapathisubramani
THE ROLE OF ORIFICE FLOW PATTERN IN FUEL ATOMIZATION
ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems, Vol.0, 1994, issue
Siichi Shiga, Zhen Huang, Hisao Nakamura, Y.M. Shao, Takao Karasawa
ENGINE COMBUSTION NETWORK (ECN): MEASUREMENTS OF NOZZLE GEOMETRY AND HYDRAULIC BEHAVIOR
Atomization and Sprays, Vol.22, 2012, issue 12
Tim Bazyn, Raul Payri, Alan L. Kastengren, Lyle M. Pickett, Julien Manin, Christopher F. Powell, F. Zak Tilocco