NDSolve essentially uses the same functions as seen in these sections. The following sections show how NDSolve solves a finite element model step by step. The usage and purpose of the internal finite element method function options are documented on the respective reference pages and in a dedicated tutorial for Finite Element Method options. Also, the integration order and interpolation order can be specified via options. Additionally, options to InitializePDECoefficients and PDESolve and their sub-options can be passed to NDSolve via "InitializePDECoefficientsOptions" and "PDESolveOptions", respectively. Options for ToBoundaryMesh and ToElementMesh can be passed to NDSolve by specifying "MeshOptions", as shown above. The finite element data is stored in an NDSolve`FEM`FiniteElementData object and accessed through the "FiniteElementData" property. #FINITE ELEMENT FORTRAN PROGRAM EXAMPLES HOW TO#The following section explores how to access the finite element data from the NDSolve`StateData object. The general use of these functions is described in "Components and Data Structures".Ĭonsistent with the rest of NDSolve, the finite element method has its data accessible through NDSolve`StateData. The NDSolve framework has lower-level functions NDSolve`ProcessEquations, NDSolve`Iterate and NDSolve`ProcessSolutions and a data object NDSolve`StateData that provide some access to the solution process for all types of differential equations.
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