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

• Type: Article in International Scientific Journal
• Date: 1995

Authors

Sílvio Gama (Author) FEUP; U. Frisch (Author) Other

Journal

Title: Computing systems in engineering

Vol. 6 No. 4

Pages: 325-329

ISSN: 0956-0521

Publisher: Pergamon Press - Elsevier

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences > Engineering

Other information

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.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 5