A Computational Study on Supersonic Combustion With Strut as Flame Holder

2008 ◽  
Author(s):  
Ramya Hande ◽  
Anil Marathe
Keyword(s):  
Computational Study ◽  
Supersonic Combustion ◽  
Flame Holder

Computational Analysis of Non-Premixed Combustion in a Scramjet Combustor With a Wedge Shaped Strut Injector

2021 ◽  
Author(s):  
Sajal Katare ◽  
Nagendra P. Yadav
Keyword(s):  
Computational Analysis ◽  
Static Pressure ◽  
Computational Study ◽  
Combustion Process ◽  
Combustion Efficiency ◽  
Reaction Model ◽  
Premixed Combustion ◽  
Cold Flow ◽  
Flame Holder ◽  
Scramjet Combustor

Abstract This paper focuses the computational study of non-premixed combustion in a scramjet combustor. The wedge shaped strut injector was used in the combustion process. In order to investigate the flame holding mechanism of the wedge shaped strut in supersonic flow, the two-dimensional coupled implicit RANS equations, the standard k-ε turbulence model and the finite-rate/eddy-dissipation reaction model are introduced to simulate the flow field of the hydrogen fueled scramjet combustor with a strut flame holder under different conditions. The static pressure of the case under the engine ignition condition is much higher than that of the case under the cold flow condition. The reflection of shock waves improves the mixing of hydrogen with the stream of inlet air and thus increases combustion efficiency. The mass flow rate of air is optimized for the best performance of engine.

Computational Analysis of Mixing in Scramjet Combustor using Cross Flow Injection Technique

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
D. Hasen ◽  
R. Karthikeyan ◽  
M. Sundararaj ◽  
K. M. Parammasivam
Keyword(s):  
Flow Injection ◽  
Computational Study ◽  
Cross Flow ◽  
Injection Pressure ◽  
Supersonic Combustion ◽  
Injection Technique ◽  
Fuel Injectors ◽  
Flow Recirculation ◽  
Scramjet Combustor ◽  
Number Variation

The prime issue in supersonic combustion is proper mixing within short duration of time. Computational study has been performed to analyse the mixing of air and fuel using cross flow injection technique. Cross flow injection is performed by placing the fuel injectors on the walls of the scramjet engine which is perpendicular to the flow. To enhance the mixing of fuel and air, cavities were introduced. The flow recirculation inside the cavity will enhance the mixing and combustion. The fuel injectors were placed just upstream of the cavity. Analyses were done by changing the injection angles. The air is allowed to enter at different Mach numbers and the changes were analysed using ANSYS software. The roles of cavity cross flow injection, pressure, temperature, velocity and Mach number variation were examined in this study and the obtained results were compared between various configurations.

A computational study of supersonic combustion behind a wedge-shaped flameholder

Shock Waves ◽  
2013 ◽  
Vol 24 (1) ◽  
pp. 41-50 ◽  
Author(s):  
C. Fureby ◽  
E. Fedina ◽  
J. Tegnér
Keyword(s):  
Computational Study ◽  
Supersonic Combustion

A computational study of supersonic combustion in strut injector and hypermixer flow fields

2015 ◽  
Vol 35 (2) ◽  
pp. 2127-2135 ◽  
Author(s):  
C. Fureby ◽  
K. Nordin-Bates ◽  
K. Petterson ◽  
A. Bresson ◽  
V. Sabelnikov
Keyword(s):  
Computational Study ◽  
Flow Fields ◽  
Supersonic Combustion

Ignition and supersonic combustion behavior of liquid ethanol in a scramjet model combustor with cavity flame holder

2015 ◽  
Vol 35 (2) ◽  
pp. 2091-2099 ◽  
Author(s):  
Shinji Nakaya ◽  
Yuta Hikichi ◽  
Yoshiki Nakazawa ◽  
Kazuki Sakaki ◽  
Minho Choi ◽  
...  
Keyword(s):  
Supersonic Combustion ◽  
Combustion Behavior ◽  
Flame Holder
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