Stabilized multistep methods for index 2 Euler-Lagrange DAEs
Arévalo, Carmen; Führer, Claus; Söderlind, Gustaf (1996). Stabilized multistep methods for index 2 Euler-Lagrange DAEs. BIT, 36, (1), 1 - 13
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Published
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English
Authors:
Arévalo, Carmen
;
Führer, Claus
;
Söderlind, Gustaf
Department:
Mathematics (Faculty of Engineering)
Numerical Analysis
Research Group:
Numerical Analysis
Abstract:
We consider multistep discretizations, stabilized by β-blocking, for Euler-Lagrange DAEs of index 2. Thus we may use “nonstiff” multistep methods with an appropriate stabilizing difference correction applied to the Lagrangian multiplier term. We show that order p =k + 1 can be achieved for the differential variables with order p =k for the Lagrangian multiplier fork-step difference corrected BDF methods as well as for low order k-step Adams-Moulton methods. This approach is related to the recently proposed “half-explicit” Runge-Kutta methods.
Keywords:
differential algebraic equations (DAE) ;
Euler-Lagrange equations ;
multistep methods ;
β-blocked methods ;
partitioned methods ;
compound multistep methods
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