Influence of molecular diffusion on alignment of vector fields: Eulerian analysis

M Gonzalez (1)

1 CORIA - Complexe de recherche interprofessionnel en aérothermochimie

The effect of diffusive processes on the structure of passive vector and scalar gradient fields is investigated by analyzing the corresponding terms in the orientation and norm equations. Numerical simulation is used to solve the transport equations for both vectors in a two-dimensional, parameterized model flow. The study highlights the role of molecular diffusion in the vector orientation process , and shows its subsequent action on the geometric features of vector fields.

Domaines: Mécanique des fluides [physics.class-ph]; Milieux fluides et réactifs

M Gonzalez. Influence of molecular diffusion on alignment of vector fields: Eulerian analysis. Theoretical and Computational Fluid Dynamics, 2017, 31 (2), pp.211 - 220. ⟨10.1007/s00162-016-0417-6⟩. ⟨hal-01461346⟩