Nonlinear development of weak beam–plasma instability

The nonlinear downstream development of baroclinic instability

The downstream development in both space and time of baroclinic instability is studied in a nonlinear channel model on the f -plane. The model allows the development of the instability to be expressed on space and time scales that are long compared to the growth rates and wavelengths of the most unstable wave. The unstable system is forced by time-varying boundary conditions at the origin of th...

On Nonlinear Preservers of Weak Matrix Majorization

on nonlinear preservers of weak matrix majorization

Nonlinear Development of Thermal Instability without External Forcing

Supersonic turbulent motions are the remarkable properties of interstellar medium. Previous numerical simulations have demonstrated that the thermal instability in a shock-compressed layer produces the supersonic turbulent motion that does not decay. In this paper we focus on twoand three-dimensional numerical simulations of the non-linear development of simple thermal instability incorporating...

Nonlinear Development and Secondary Instability of Traveling Crossflow Vortices

Transition research under NASA’s Aeronautical Sciences Project seeks to develop a validated set of variable fidelity prediction tools with known strengths and limitations, so as to enable “sufficiently” accurate transition prediction and practical transition control for future vehicle concepts. This paper builds upon prior effort targeting the laminar breakdown mechanisms associated with statio...