Computation of the viscous supersonic flow over symmetrical and asymmetrical external axial corners

Numerical study of flowfields about asymmetric external conical corners

“…It seems that, to within the accuracy of the calculations, the saddle point tolerates a small amount of asymmetry in the flow before moving from the corner; this is in agreement with the observations of Ref. 2. The values of R for the saddle-point singularity off the corner, for the cases tested, were an order of magnitude greater than the scale used in Fig.…”

“…1, may persist if the flow is only slightly asymmetrical. 2 For the spillover configuration, a set of equations valid at the corner was obtained which showed that the cross-flow experiences a rapid acceleration as it reaches the corner, attaining sonic conditions at the corner and then undergoing a conical analog of Prandtl-Meyer flow. This local analysis, however, gave no information on the size of the supersonic cross-flow bubble that forms at the corner.…”

“…. The timedependent Euler equations,(2)(3)(4)(5)(6), are written in the computational space (X, Y, T) defined byX= <t> 2 s i(Y}-<t> o-e w (X) e sk (x,T)-e w (…”

Early development of implicit methods for Computational Fluid Dynamics at NASA Ames

“…Kutler et al [13] applied the Beam-Warming schemes to viscous supersonic flow over symmetrical and asymmetrical external axial corners. Kutler et al [14] computed the viscous supersonic flow over symmetrical and asymmetrical external axial corners. Steger and Bailey [18] applied the Beam and Warming schemes to the calculation of transonic aileron buzz, one of the first unsteady shock-boundary layer calculations.…”