Wu, B., and R. E. White. 2001. “An initialization subroutine for DAEs solvers: DAEIS”. Computers and Chemical Engineering 25 (2-3): 301-11.
Abstract
Numerical difficulty arises when DAEs are solved with inconsistent initial values of dependent variables. It can cause the solution failures of many popular DAEs solvers. An initialization subroutine, DAEIS (Differential Algebraic Equation Initialization Subroutine), has been developed to handle this issue. In DAEIS, consistent initial values of dependent variables fo index-1 DAEs are obtained through solving a set of nonlinear equations based on the initialization settings. To achieve good efficiency and robustness of the initialization computation, a nonlinear equation solver, GNES, has been specially built for DAEIS. The usage of DAEIS is demonstrated through handling inconsistent initializations for combined continuous/discrete simulations. © Elsevier Science Ltd.
Last updated on 09/07/2023