Towards a novel multi-fluid coronal model
Abstract
We propose to exploit the recent innovative developments in COOLFluiD (Computational Object-Oriented Libraries for Fluid Dynamics) to develop a novel coronal model, starting with a fast steady-state MHD model, making that time accurate in a next step and ultimately, extending it to two-fluid and ultimately to multi-fluid so that the chromospheric physics can be taken into account as well. More precisely, the (available) novel numerical techniques that will be exploited to go beyond the current state-of-the-art, include a finite volume method on unstructured grids (i.e. no singularity at the poles), combined with a fully implicit solver (i.e. much faster for steady-state and quasi-stationary evolution), and a novel robust solution adaptive mesh r-adaptive algorithm for flow and plasma simulations based on the moving grid approach.The physics is to be included/implemented in the model step by step. We propose to start with a steady MHD relaxation coronal model, using the single-fluid version of our novel multifluid/Maxwell model in COOLFLuiD, so that it can be extended readily to multi-fluid in a later phase. The targeted time-accurate MHD model will enable self-consistent data-driven magnetohydrodynamic modelling of solar eruptions! It can be integrated into EUHFORIA, our heliospheric wind and flux-rope CME evolution model. This will enable improved, time dependent wind modelling enabling integration of SEP acceleration and transport models. In the foreseen subsequent modules, both the physics and the numerics will be augmented considerably by upgrading it step-wise to the multi-fluid formulation, enabling also to include the lower layers in the solar atmosphere and thus the effect of partial ionization (selfconsistently thermodynamic non-equilibrium and non-LTE radiation.)
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 09, 2018
- Source ID
- FA95501810093
Entities
People
- Stefaan Poedts
Organizations
- Air Force Office of Scientific Research
- Katholieke Universiteit Leuven
- United States Air Force