RT journal article T1 On a Variational Method for Stiff Differential Equations Arising from Chemistry Kinetics A1 Amat, Sergio A1 Legaz, María José A1 Ruiz-Álvarez, Juan A2 Ciencias y Técnicas de la NavegaciónMáquinas y Motores Térmicos y Teoría de la Señal... K1 variational methods K1 chemistry kinetics K1 global convergence AB For the approximation of stiff systems of ODEs arising from chemistry kinetics, implicitintegrators emerge as good candidates. This paper proposes a variational approach for this typeof systems. In addition to introducing the technique, we present its most basic properties and testits numerical performance through some experiments. The main advantage with respect to otherimplicit methods is that our approach has a global convergence. The other approaches need toensure convergence of the iterative scheme used to approximate the associated nonlinear equationsthat appear for the implicitness. Notice that these iterative methods, for these nonlinear equations,have bounded basins of attraction. PB MDPI SN 2227-7390 YR 2019 FD 2019-05 LK http://hdl.handle.net/10498/21613 UL http://hdl.handle.net/10498/21613 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 10-nov-2026