Section: New Software and Platforms

NaSCar

Participant : Michel Bergmann [correspondant] .

This code is devoted to solve 3D-flows in around moving and deformable bodies. The incompressible Navier-Stokes equations are solved on fixed grids, and the bodies are taken into account thanks to penalization and/or immersed boundary methods. The interface between the fluid and the bodies is tracked with a level set function or in a Lagrangian way. The numerical code is fully second order (time and space). The numerical method is based on projection schemes of Chorin-Temam's type. The code is written in C language and use Petsc (http://www.mcs.anl.gov/petsc/petsc-as/ ) library for the resolution of large linear systems in parallel.

NaSCar can be used to simulate both hydrodynamic bio-locomation as fish like swimming and aerodynamic flows such wake generated by a wind turbine.

• Version: 1

• Keywords: numerical analyse, fluid mechanics, langage C, PETSc

• Software benefit : simulate a flow around a deformable obstacle, moving into a fluid.

• APP: En cours

• Patent: non

• Type of human computer interaction: human for the moment

• OS/Middelware: unix, linux, mac os

• Required library or software: PETSc item Programming language: C

• Documentation: in progess