Artículos de revistas
Theoretical modelling of electrokinetic flow in microchannel networks
Fecha
2007-12Registro en:
Berli, Claudio Luis Alberto; Theoretical modelling of electrokinetic flow in microchannel networks; Elsevier Science; Colloids and Surfaces A: Physicochemical and Engineering Aspects; 301; 1-3; 12-2007; 271-280
0927-7757
CONICET Digital
CONICET
Autor
Berli, Claudio Luis Alberto
Resumen
We propose a simple preconditioning for the equations of motion of constrained mechanical systems in index three form. The scaling transformation is applied to the displacementvelocity- multiplier and to the reduced displacement-multiplier forms. The analysis of the transformed system shows that conditioning and sensitivity to perturbations become independent of the time step size, as in the case of well-behaved ordinary differential equations. The new scaling transformation is simple to implement and does not require the rewriting of the system equations as other approaches do. The theoretical analysis is confirmed by numerical examples.