The two-dimensional Navier-Stokes-Kuramoto-Sivashinski equation on the Connection Machine

• Tipo: Artigo em Revista Científica Internacional
• Data: 1995

Autores

Sílvio Gama (Autor) FEUP; U. Frisch (Autor) Outra

Revista

Título: Computing systems in engineering

Vol. 6 Nº 4

Páginas: 325-329

ISSN: 0956-0521

Editora: Pergamon Press - Elsevier

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas > Engenharia

Outras Informações

Resumo (PT): The two-dimensional Navier-Stokes equations with a large scale instability of the Kuramoto-Sivasshinsky type, describing marginally negative eddy viscosity situations, is simulated on a Connection Machine CM-2. Up to millions of time steps at the resolution 256 ans tens of thousands at the resolution 1024 are performed. A linear growth phase, a disorganized inverse cascade phase and a structured vortical phase are successively observerd. In the vortical phase monopolar and multipolar structures are proliferating and display strongly depleted nonlinearities.

Abstract (EN): The two-dimensional Navier-Stokes equations with a large scale instability of the Kuramoto-Sivasshinsky type, describing marginally negative eddy viscosity situations, is simulated on a Connection Machine CM-2. Up to millions of time steps at the resolution 256 ans tens of thousands at the resolution 1024 are performed. A linear growth phase, a disorganized inverse cascade phase and a structured vortical phase are successively observerd. In the vortical phase monopolar and multipolar structures are proliferating and display strongly depleted nonlinearities.

Idioma: Português

Tipo (Avaliação Docente): Científica

Nº de páginas: 5