Flowfield Studies of Diamond-Shaped Fuel Injector in a Supersonic Flow

Computational Simulation of Scramjet Combustors - A Comparison between Quasi-One Dimensional and 2-D Numerical Simulations

“…Various numerical and experimental studies have been performed on fuel injection through orifices with sharp leading edges, such as diamond or wedge shaped orifice [58][59][60]. Timioka, et al [58], performed experimental studies of the plume formed by sonic injection from a diamond-shaped orifice into a Mach 3 crossflow.…”

“…Kobayashi, et al [60] performed studies examining the effects of igniter torch flow on the nearfield flow structure of a diamond-port flush wall injector in a supersonic crossflow. It was concluded that, diamond-shaped injector port geometry could be "tailored for improving mixing and producing an additional secondary flow structure with gasdynamic flame-holding potential", such that an igniter torch could be used without adversely affecting the tailored flow structure [60].…”

“…It was concluded that, diamond-shaped injector port geometry could be "tailored for improving mixing and producing an additional secondary flow structure with gasdynamic flame-holding potential", such that an igniter torch could be used without adversely affecting the tailored flow structure [60]. …”

Supersonic Combustion using Multiple Stinger-shaped Injectors

“…The port geometry of the injector [1][2][3][4][5][6][7] is one of the important factors for fuel penetration. Some injector shapes improve the fuel penetration by reducing the effective back pressure around the injectors.…”

Supersonic Combustion Ramjet Research

“…As noted above our investigation of gaseous fuel injectors has ranged from the study of simple circular wall injectors to the study of more complicated approaches, such as the use of pylon-based injectors [8,20], tandem injectors (e.g., the cascade injector [21]), and diamondshaped injectors [32,33,52]. In the case of simple circular injectors, a recent effort has focused on providing a validation data set for modelers; this is discussed below in the section on Multidisciplinary Laser Measurements.…”