Effect of subsonic inlet lip geometry on predicted surface and flow mach number
distributions, National Aeronautics and Space Administration, [online] [accessed 19 May.
However, it is time-consuming to generate the training data via any direct CFD simulations when both Mach number
and mean angle of attack are taken into consideration.
, separation distance, angle of attack, and airfoil thickness were also varied in the 2D simulations.
Then the spatial variation of velocity, vorticity, shock, Mach number
, species concentration, and temperature are presented and discussed in depth.
We must, however, immediately underline that the onset of KH instability in incompressible magnetic flux tube always requires slightly greater threshold Alfveen Mach numbers
and correspondingly higher critical jet speeds.
The effects of parameters such as Mach number
, dynamic pressure, and temperature on aerodynamic nonlinearity are discussed in Section 3.
The static pressure rise is achieved through the ramming effect of the air; the increase in Mach number
results in increase in static pressure and static temperature with the loss of stagnation pressure due to the presence of shock waves.
It is found that the disturbance amplitude obtained by experiments agrees well with the linear stability theory (LST) result when the freestream Mach number
is less than 2.2.
However, performance studies done by FRDC engineer Bob Abernethy showed that for a J58 application requiring continuous high Mach number
afterburner operation, ducting compressor bleed air directly into the afterburner not only eliminated the stall margin limits, but it also provided better engine performance.
The exhaust velocities, Mach numbers
, and mass flow rates are largely fixed by the engine cycle, and one has little freedom to alter them.
The collision frequency distribution curves under different Mach numbers
, when the incidence wave is normal to surface, are described in Figure 5.
One of the critical parameter in the gas atomization process is the Mach number
. The exit velocity of the gas jet in the atomization process controls the extent of the metal breakup.