Steinar Børve: CFD modelling using Regularized Smoothed Particle Hydrodynamics

Fredagskollokvium

Abstract

Computational Fluid Dynamics (CFD) is strongly dominated by Eulerian methods utilizing meshes or strictly ordered elements. However, a Lagrangian description would in many situations represent a more intuitive and elegant option. Smoothed Particle Hydrodynamics (SPH) is a method which tries to utilize the potential of the Lagrangian formulation. First developed for astrophysical applications of self-gravitating hydrodynamics, the method has found its use in models of neutral gases, liquids, and solid materials. Although the principles behind the method is both simple and elegant, SPH can be a highly challenging method to analyse and to use, and in actual use the basic method has limitations that often makes SPH a poor alternative to other methods.

Regularized Smoothed Particle Hydrodynamics (RSPH) is an extensions of SPH. The idea has been basically to develop a more flexible and accurate version of SPH. In this talk, I will review the different stages of the RSPH development and the challenges we have been facing in this work. Then, I will give examples of simulation results from  (M)HD gas models, as well as models of liquids. Finally, I will describe the current status of the work and future plans.

Publisert 14. jan. 2011 15:20 - Sist endret 30. mars 2011 17:35