Mean field models for interacting ellipsoidal particles. (August 2016)

• Record Type: Journal Article
• Authors: Borsche, R.; Klar, A.; Meurer, A.; Tse, O.
• Is Part Of: Computers & mathematics with applications. Volume 72:issue 3(2016)
• Page Start: 704
• Page End: 719
• Publication Date: 2016-08
• Subjects: Mean-field limit -- Interacting ellipsoids -- Langevin equations -- Macroscopic equations -- Jefferys equation; Electronic data processing -- Periodicals; Mathematics -- Data processing -- Periodicals; 510.28541
• DOI: 10.1016/j.camwa.2016.05.029
• Languages: English
• ISSNs: 0898-1221

Abstract

Abstract: We consider a mean field hierarchy of models for large systems of interacting ellipsoids suspended in an incompressible fluid. The models range from microscopic to macroscopic mean field models. The microscopic model is based on three ingredients. Starting from a Langevin type model for rigid body interactions, we use a Jefferys type term to model the influence of the fluid on the ellipsoids and a simplified interaction potential between the ellipsoids to model the interaction between the ellipsoids. A mean field equation and corresponding equations for the marginals of the distribution function are derived and a numerical comparison between the different levels of the model hierarchy is given. The results clearly justify the suitability of the proposed approximations for the example cases under consideration.