Combustion and Mixing Analysis of a Scramjet Combustor Using CFD |
Author(s): |
Pradeep Halder , Osmania University; Franklin Edla, Osmania University; Dr. P. Ravinder Reddy, Osmania University |
Keywords: |
Combustion Efficiency, Diesel (C10H22), Methane (CH4), Hydrogen (H2), Shockwaves |
Abstract |
The present study is to determine flow field in the three-dimensional scramjet engine combustor with coupled implicit NS equations, the standard k-ε turbulence model are used and the finite-rate/eddy-dissipation reaction model has to be applied to simulate numerically for the flow field of the hydrogen, diesel and methane fueled scramjet combustor with a planer strut flame holder under two different working conditions, the working condition include the cold flow and engine ignition. ANSYS Fluent software is used to solve the analysis, with hot and cold inlet velocities, the mach number for air and fluids are 2 and 1 respectively, inflow fluids are varied as hydrogen, diesel and methane. Due to combustion the recirculation region behind the wedge becomes larger as compared to mixing case and it acts as a flame holder for the methane (CH4), hydrogen (H2) and diesel (C10H22) diffusion. It is also evident from the simulation studies; the combustion affects the flow field significantly. The leading edge shock reflected off the upper and lower combustor walls facilitates on setting of combustion when it hits the wake in a region where large portions of the injected fuel have been mixed up with the air. The pressure, velocity and temperature distributions along the geometry are estimated and discussed. |
Other Details |
Paper ID: IJSRDV2I9028 Published in: Volume : 2, Issue : 9 Publication Date: 01/12/2014 Page(s): 27-33 |
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