Mixing Characteristics of Gaseous Fuel Injection Upstream of a Flameholding Cavity in Supersonic Flow

2008 ◽  
Author(s):  
MingBo Sun
Keyword(s):  
Supersonic Flow ◽  
Fuel Injection ◽  
Gaseous Fuel ◽  
Mixing Characteristics

Mixing Characteristics in a Supersonic Combustor with Gaseous Fuel Injection Upstream of a Cavity Flameholder

2008 ◽  
Vol 82 (2) ◽  
pp. 271-286 ◽  
Author(s):  
Ming-bo Sun ◽  
Hui Geng ◽  
Jian-han Liang ◽  
Zhen-guo Wang
Keyword(s):  
Fuel Injection ◽  
Gaseous Fuel ◽  
Mixing Characteristics

Transient Turbulent Gaseous Fuel Jets for Diesel Engines

1999 ◽  
Vol 121 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Philip G. Hill ◽  
Patric Ouellette
Keyword(s):  
Diesel Engine ◽  
Small Angle ◽  
Compressible Flows ◽  
Fuel Injection ◽  
Gaseous Fuel ◽  
Jet Injection ◽  
Penetration Distance ◽  
Wide Range ◽  
Jet Penetration ◽  
Species Diffusion

Existing data on transient turbulent jet injection in to large chambers demonstrates self-similar behavior under a wide range of conditions including compressibility, thermal and species diffusion, and nozzle under expansion. The Jet penetration distance well downstream of the virtual origin is proportional to the square root of the time and the fourth root of the ratio of nozzle exit momentum flow rate to chamber density. The constant of proportionality has been evaluated by invoking the concept of Turner that the flow can be modeled as a steady jet headed by a spherical vortex. Using incompressible transient jet observations to determine the asymptotically constant ratio of maximum jet width to penetration distance, and the steady jet entrainment results of Ricou and Spalding, it is shown that the penetration constant is 3 ± 0.1. This value is shown to hold for compressible flows also, with substantial thermal and species diffusion, and even with transient jets from highly under-expanded in which, as in diesel engine chambers with gaseous fuel injection, the jet is directed at a small angle to one wall of the chamber. In these tests, with under expanded nozzles. Observations of transient jet injection have been made in a chamber in which, as in diesel engine chambers with gaseous fuel injection, the jet is directed at a small angle to one wall of the chamber. In these tests, with under-expanded nozzles it was found that at high nozzle pressure ratios, depending on the jet injection angle, the jet penetration can be consistent with a penetration constant of 3. At low pressure ratios the presence of the wall noticeably retards the penetration of the jet.

Pylon-Aided Fuel Injection into Supersonic Flow

2007 ◽  
Author(s):  
Rama Balar ◽  
Ken Yu ◽  
Ashwani Gupta ◽  
Ajay Kothari
Keyword(s):  
Supersonic Flow ◽  
Fuel Injection

Numerical and experimental study of gaseous fuel injection for CNG direct injection

Fuel ◽  
2015 ◽  
Vol 140 ◽  
pp. 693-700 ◽  
Author(s):  
Mingi Choi ◽  
Sanghoon Lee ◽  
Sungwook Park
Keyword(s):  
Experimental Study ◽  
Fuel Injection ◽  
Direct Injection ◽  
Gaseous Fuel

Fuel Pressure Control for Gaseous Fuel Injection Systems

1998 ◽  
Author(s):  
Chien-Ping Pan ◽  
Min-Chung Li ◽  
Syed F. Hussain
Keyword(s):  
Fuel Injection ◽  
Pressure Control ◽  
Gaseous Fuel
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