FEMFLUID Documentation

2.0

FEMFLUID

Author:

Petr Svacek

Version:

1.2

Date:

2002-2005

Warning:

This package is still under development.

Program Introduction

• Program for numerical simulations of PDE (mainly fluid/structure) problems.

• Originally was written in C++ language, in Jan 2002 rewritten to C language.

• Mainly Global Variables are used, because of the following purpose
  • speed (easy and quick access),
  • just one allocation needed,

The program was intended to be written in such a way, that no comments are needed. However, with new mathematical and physical models included rather hard inspection of the program is needed.

Datastructure

The global datastructure follows the originally design structure, where higher order hierarchichal base functions were taken into account. Next version of the program is recently under development, where a revision of data structure will be considered.

See files datastr.h, datastr.c and module DATA_STRUCTURE.

Configuration

Configuration is read from config file specified at a command line, e.g.

user (at) computer~>laminar.exe config.ini

Program first looks into config.ini, removes all white spaces and comments, and starts to read the configuration from it into global data structure as defined in variable _taglist[].

Functions needed for the package are included in wlog.c and wlog.h files.

Mesh Definition

Basic mesh definition consists of vertices ( x, y ) and triangles ( ELEMENT ) Further mesh edges are defined.

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