tdynreference manual


Introduction

Tdyn is an environment for fluid dynamics simulation, based on the numerical solution of the incompressible and slightly compressible Navier-Stokes equations using a stabilised (FIC) finite element method [[1],[2],[3],[4],[5]].

Tdyn includes different modules that allow to solve Heat Transfer in both solid and fluids (HEATRANS module), Turbulence (RANSOL module), Advection of Species (ADVECT module) and Free Surface (NAVAL module) problems using the same stabilised scheme mentioned above. Tdyn also includes a module for geometry and data definition and post-processing of the analysis results (PREPOST module).

The different modules of Tdyn are fully integrated and the complete environment is used as one single program.

The analysis of a problem by means of Tdyn, consists of the following basic steps (see Figure 1):

·        Pre-processing

                     i.            Creation (or importation) of the geometry to be analysed

                   ii.            Assignment of the material properties, boundary conditions and definition of general data

                  iii.            Mesh generation

·        Calculation

·        Post-processing

Figure 1 Steps to be done in the analysis of any FE problem