Аэродинамика

Аэродинамика
162 GPU, 3 h
SC «Lobachevskii»,
SU Nijnii Novgorod

Аэродинамика: Неустойчивость и аэроакустика сверхзвуковых струй
физический
эксперимент
вычислительный
эксперимент

Пример: модель сверхзвукового ЛА
Сетка: 8 уровней адаптации, 3.6 М элементов

Numerical Methods for Multimaterial Flows Modeling
Features of our method :
uses fixed Eulerian grids and finite volume framework
numerical flux approxinmation based on approximate solution of a proper IVP
interface capturing method
position in space of specific component is defined by its volume fraction distribution
mathematical model is based on UNIFIED EOS
1D Plates Impact
impact (1km/s) of two steel plates
steel is described by Mie-Grunaisen
air is described by ideal gas EOS

Underwater Air Bubble Collapse
planar shock (M~1.72) interacts with air bubble in water
gas and water are described by stiffened gas EOS
Material Ejection
material ejection is induced by shock (~40 GPa) falling on disturbed boundary of lead impactor
shock is induced by lead impactor (1.95 km/s)
lead is described by Mie-Grunaisen EOS
air is described by ideal gas EOS

High-Velocity Impact: Shock/Contact Interaction
grey=impactor (Fe); red/blue = target (lead, density disturbances) Impact velocity = 5 km/s;
Fe and lead are described by Mie-Grunaisen EOS