Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Imprimir: 1065-3090
ISSN On-line: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v16.i2.20
pages 127-136

VISUALIZATION OF RECIRCULATION IN A LOW ASPECT RATIO DUMP COMBUSTOR

Nagendra P. Yadav
IIT, Kanpur
Abhijit Kushari
Department of Aerospace Engineering, IIT Kanpur, Kanpur-208 016, Uttar Pradesh, India

RESUMO

This paper describes an experimental study of the recirculating flow of air inside a dump combustor having a low length/diameter ratio and a tapered exit section. The length of the combustor studied was smaller than the reattachment length for the separated flow after the dump. The recirculation was driven by the fluid dynamics of the one-dimensional flow from a smaller area to a larger area. It was observed that the jet penetration increases with the increase in the flow Reynolds number. However, a distinct thickening of the recirculating flow was observed inside the combustor, which can be attributed to the flow reversal from the exit section, causing flow adjustment to fill the whole combustor with a recirculating flow. The findings of this study can have applications in the design of better combustors with proper alignment of the fuel injectors with respect to the flow for better evaporation and mixing of the fuel.


Articles with similar content:

FLAME STRUCTURE OF LIQUID-FUELLED CYCLONE COMBUSTORS
ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems, Vol.0, 1994, issue
A.A. Aref, S.S. Wahid
DEVELOPMENT OF INTERNAL-MIXING TWIN-FLUID ATOMIZER WITH MULTIPLE EXIT PORTS FOR HEAVY OIL-FIRED BOILERS
Atomization and Sprays, Vol.29, 2019, issue 2
Kazuaki Hashiguchi, K. Nishida, K. Sato, F. Yamane, H. Fujii
EFFECT OF GEOMETRIC VARIATIONS ON THE SPRAY DYNAMICS OF AN ANNULAR FUEL SHEET IN A HYBRID ATOMIZER
Atomization and Sprays, Vol.24, 2014, issue 8
Souvick Chatterjee, Achintya Mukhopadhyay, Mithun Das, Swarnendu Sen
PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
ICHMT DIGITAL LIBRARY ONLINE, Vol.11, 2004, issue
Brian E. Milton
DIESEL SPRAY BEHAVIOR AT COMPRESSION RATIOS UP TO 100:1
Atomization and Sprays, Vol.20, 2010, issue 5
S. L. Miller, Matt N. Svrcek, Christopher F. Edwards