MIXING AND NOZZLE GEOMETRY EFFECTS ON FLAME STRUCTURE AND STABILITY

2007 ◽  
Vol 179 (1-2) ◽  
pp. 249-263 ◽  
Author(s):  
FAWZY EL-MAHALLAWY ◽  
AHMED ABDELHAFEZ ◽  
MOHY S. MANSOUR*
Keyword(s):  
Flame Structure ◽  
Nozzle Geometry ◽  
Structure And Stability ◽  
Geometry Effects

scholarly journals Eulerian CFD modeling of nozzle geometry effects on ECN Sprays A and D: assessment and analysis

2019 ◽  
Vol 21 (1) ◽  
pp. 73-88 ◽  
Author(s):  
Adrian Pandal ◽  
Jose M Garcia-Oliver ◽  
Jose M Pastor
Keyword(s):  
Turbulence Modeling ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Computational Effort ◽  
Diffuse Interface ◽  
Cfd Modeling ◽  
Nozzle Geometry ◽  
Nozzle Flow ◽  
X Ray ◽  
Geometry Effects

Diesel spray modeling is a multi-scale problem with complex interactions between different flow regions, that is, internal nozzle flow, near-nozzle region and developed spray, including evaporation and combustion. There are several modeling approaches that have proven particularly useful for some spray regions although they have struggled at other areas, while Eulerian modeling has shown promise in dealing with all characteristics at a reasonable computational effort for engineering calculations. In this work, the [Formula: see text]–Y single-fluid diffuse-interface model, based on scale separation assumptions at high Reynolds and Weber numbers, is used to simulate the engine combustion network Sprays A and D within a Reynolds-averaged Navier–Stokes turbulence modeling approach. The study is divided into two parts. First of all, the larger diameter Spray D is modeled from the nozzle flow till evaporative spray conditions, obtaining successful prediction of numerous spray metrics, paying special attention to the near-nozzle region where spray dispersion and interfacial surface area can be validated against measurements conducted at the Advanced Photon Source at Argonne National Laboratory, including both the ultra-small-angle X-ray scattering and the X-ray radiography. Afterwards, an analysis of the modeling predictions is made in comparison with previous results obtained for Spray A, considering the nozzle geometry effects in the modeling behavior.

scholarly journals Nozzle Geometry Effects on Corner Boundary Layers in Supersonic Wind Tunnels

AIAA Journal ◽  
2019 ◽  
Vol 57 (8) ◽  
pp. 3620-3623 ◽  
Author(s):  
Kshitij Sabnis ◽  
Holger Babinsky
Keyword(s):  
Boundary Layers ◽  
Wind Tunnels ◽  
Nozzle Geometry ◽  
Geometry Effects

scholarly journals Nozzle geometry effects in liquid jet array impingement

2009 ◽  
Vol 29 (11-12) ◽  
pp. 2211-2221 ◽  
Author(s):  
Brian P. Whelan ◽  
Anthony J. Robinson
Keyword(s):  
Nozzle Geometry ◽  
Liquid Jet ◽  
Geometry Effects ◽  
Jet Array

scholarly journals 1206 Experimental Research on Flame Structure and Stability of Methane/Hydrogen Premixed Flame

2009 ◽  
Vol 2009.84 (0) ◽  
pp. _12-6_
Author(s):  
Yusuke SHOJI ◽  
Tomohisa KAGEYAMA ◽  
Takamitsu Yoshimoto ◽  
Toshimi TAKAGI
Keyword(s):  
Experimental Research ◽  
Flame Structure ◽  
Premixed Flame ◽  
Structure And Stability
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