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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.2 Final//FR"><!-- Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) --><!-- by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --><!-- Modified Simulog 03/97 --><HTML><HEAD><TITLE>2.1 Introduction</TITLE><LINK REL=STYLESHEET TYPE="text/css"	HREF="./Modulef.css" TITLE="Modulef CSS"><meta name="description" value="2.1 Introduction"><meta name="keywords" value="Guide3"><meta name="resource-type" value="document"><meta name="distribution" value="global"></HEAD><BODY BGCOLOR="#FFFFFF"><P> <IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM	ALT="Modulef"><A NAME=tex2html1218 HREF="node29.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif"	ALT="previous"></A><A NAME=tex2html1224 HREF="node29.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif"	ALT="up"></A><A NAME=tex2html1226 HREF="node31.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif"	ALT="next"></A><A NAME=tex2html1228 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif"	ALT="contents"></A><A NAME=tex2html1229 HREF="node28.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/index_motif.gif"	ALT="index"></A><A HREF="../Guide3-18/node30.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM	ALT="[BIG]"></A><A HREF="../Guide3-14/node30.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM	ALT="[Normal]"></A><A HREF="../Guide3-10/node30.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM	ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html1227 HREF="node31.html">2.2 Methodology</A><B>Up: </B> <A NAME=tex2html1225 HREF="node29.html">2 Three-dimensional mesh generation (1)</A><B> Prev: </B> <A NAME=tex2html1219 HREF="node29.html">2 Three-dimensional mesh generation (1)</A><B><A HREF="node28.html"	>Index</A></B><B><A HREF="node2.html"	>Contents</A></B><HR SIZE=3 WIDTH="75&#37;"><H1><A NAME=SECTION00510000000000000000>2.1 Introduction</A></H1><P>The MODULEF library proposes the following algorithms for three-dimensional meshes: <UL><LI> methods corresponding to a manual approach, <LI> a transport-projection function (or algebraic method),   <LI> a translation-stacking or extrusion technique  (for topologically cylindrical domains),<LI> a finite difference type mesh generator (for topologically hexahedral domains),<LI> a multi-block method, and<LI> a surface mesh generator for certain configurations.</UL><P>Module <b> APNOP3</b>, called directly, or via  the preprocessor <b> APN3XX</b>, performs the followingfunctions:<P><OL><LI> generates three-dimensional meshes, for simple cases,  from the point and two-dimensional mesh data, using the  mesh algorithms. For complex domains, the mesh is generated by calling the appropriate modulesdirectly (see chapter <A HREF="node43.html#chap3">3</A>);<LI> restores the <b> NOPO</b> data structures (or D.S.), containing the meshes created, in main memory(in particular, using the methods described in chapter <A HREF="node43.html#chap3">3</A>);<LI> modifies and combines these meshes to form new meshes, along with their corresponding D.S. <b> NOPO</b>,which can be saved on sequential file.</OL><P><P><P><HR SIZE=3 WIDTH="75&#37;"><IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM	ALT="Modulef"><A NAME=tex2html1218 HREF="node29.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif"	ALT="previous"></A><A NAME=tex2html1224 HREF="node29.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif"	ALT="up"></A><A NAME=tex2html1226 HREF="node31.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif"	ALT="next"></A><A NAME=tex2html1228 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif"	ALT="contents"></A><A NAME=tex2html1229 HREF="node28.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/index_motif.gif"	ALT="index"></A><A HREF="../Guide3-18/node30.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM	ALT="[BIG]"></A><A HREF="../Guide3-14/node30.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM	ALT="[Normal]"></A><A HREF="../Guide3-10/node30.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM	ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html1227 HREF="node31.html">2.2 Methodology</A><B>Up: </B> <A NAME=tex2html1225 HREF="node29.html">2 Three-dimensional mesh generation (1)</A><B> Prev: </B> <A NAME=tex2html1219 HREF="node29.html">2 Three-dimensional mesh generation (1)</A><B><A HREF="node28.html"	>Index</A></B><B><A HREF="node2.html"	>Contents</A></B><BR> <HR><P><ADDRESS></ADDRESS></BODY></HTML>
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