Title :
Data assimilation for magnetohydrodynamics with a zero-divergence constraint on the magnetic field
Author :
Teixeira, Bruno O S ; Ridley, Aaron ; Tôrres, Leonardo A B ; Aguirre, Luis A. ; Bernstein, Dennis S.
Author_Institution :
Dept. of Electron. Eng., Fed. Univ. of Minas Gerais, Belo Horizonte
Abstract :
We address the problem of enforcing the zero- divergence constraint in data assimilation for two-dimensional magnetohydrodynamic flow. Using a finite-volume computational model, we compare the performance of the localized unscented Kalman filter with the localized equality-constrained unscented and projected localized unscented Kalman filters, which enforce the zero-divergence constraint.
Keywords :
Kalman filters; computational fluid dynamics; data assimilation; finite volume methods; magnetic fields; magnetohydrodynamics; nonlinear filters; data assimilation; finite-volume computational model; localized unscented Kalman filter; magnetic field; magnetohydrodynamics; two-dimensional magnetohydrodynamic flow; zero-divergence constraint; Brazil Council; Computational modeling; Data assimilation; Equations; Finite difference methods; Fluid dynamics; Magnetic fields; Magnetic properties; Magnetohydrodynamics; Plasmas;
Conference_Titel :
American Control Conference, 2008
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-2078-0
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2008.4586872
