Mixing Effects of Pylon-Aided Fuel Injection Located Upstream of a Flameholding Cavity in Supersonic Flow

2005 ◽  
Author(s):  
Daniel Montes ◽  
Paul King ◽  
Mark Gruber ◽  
Campbell Carter ◽  
Mark Hsu
Keyword(s):  
Supersonic Flow ◽  
Fuel Injection ◽  
Mixing Effects

Pylon-Aided Fuel Injection into Supersonic Flow

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

scholarly journals Numerical Investigation of Various Fuel Injection Angles on Interaction in Cold Kerosene-fueled Supersonic Flow

2017 ◽  
Vol 7 ◽  
pp. 66-71 ◽  
Author(s):  
Yin-Yin Qi ◽  
Lin Zhu ◽  
Wei-Lai Liu ◽  
Bao-Jian Xu ◽  
Jia-Ru Ge ◽  
...  
Keyword(s):  
Supersonic Flow ◽  
Numerical Investigation ◽  
Fuel Injection

scholarly journals Mixing and Fuel Atomisation Effects on Premixed Combustion Performance

1983 ◽  
Author(s):  
G. E. Andrews ◽  
M. M. Abdul Aziz ◽  
N. A. Al-Dabbagh
Keyword(s):  
Liquid Fuel ◽  
Fuel Injection ◽  
Constant Pressure ◽  
Combustion Efficiency ◽  
Premixed Combustion ◽  
Flame Stability ◽  
Nox Emissions ◽  
Jet Mixing ◽  
Mixing Effects ◽  
Single Droplets

The main objective was to compare a flame stabiliser at constant pressure loss and identical isothermal aerodynamics with three modes of fuel injection: premixed, direct propane injection and direct kerosene injection. A Jet Mixing type of flame stabiliser was used at simulated gas turbine primary conditions. The influence of gaseous mixing effects was to deteriorate the combustion efficiency solely by increasing the CO emissions and to increase the NOx emissions. The flame stability was increased and low CO emissions were achieved at weaker mixtures. Liquid fuel atomisation effects resulted in a further deterioration in combustion efficiency due solely to un-burnt hydrocarbons. However, the NOx emissions were reduced indicating that local stoichiometric burning around single droplets does not occur.

Parametric Analysis of Pylon-Aided Fuel Injection in Scramjet Engines

2013 ◽  
Vol 135 (2) ◽  
Author(s):  
Mitchell R. Pohlman ◽  
Robert B. Greendyke
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Supersonic Flow ◽  
Performance Analysis ◽  
Parametric Analysis ◽  
Fuel Injection ◽  
Absolute Size ◽  
Plume Area ◽  
Air Mixing ◽  
Computational Fluid Dynamics Cfd

The current study investigates means to increase the efficiency of fuel-air mixing into supersonic flow upstream of a flame holding cavity. Previous work has shown much promise in increasing the penetration and mixing of a fuel-air mixture into the freestream by injecting fuel behind small triangular pylons. The current paper examines 21 triangular pylons of varying widths, heights, and lengths with a computational fluid dynamics (CFD) performance analysis. Increasing the height of the pylons increased the penetration, flammable fuel plume area, and floor gap. Variations in pylon length had no discernible impact on the fuel-air mixing metrics. Aerodynamic loses were minimal for all pylon configurations and did not correlate to the absolute size of the pylons tested.

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