seg1test.html

来自「有限元学习研究用源代码(老外的),供科研人员参考」· HTML 代码 · 共 92 行

<title>segment - test example</title>

<h1>Test Example for Segment Description</h1>

<p>It is <b>required</b> to declare one instance of the class
<b>wzSegmentDescription</b>. We recommend to use this class in the
following way:

 <ol>
 <li> define a derived class of wzSegmentDescription (wzSegmentExample)
 <li> include all materials, boundary conditions and material functions
into this class.
 <li> create one instance (wzsegmentexample)
 </ol>

 <p>It can be also useful to use this scheme only for materials.
Different regions of the same material may be defined like it is done
here:

<PRE>
#include "<A HREF="wzsegment.hxx">wzsegment.hxx</A>"

typedef enum{Dirichlet,Neumann,Cauchy} BoundaryCondition;
const wzIndex wzexampleregions = 20;

class test_segment_decription: public wzSegmentDescription
public:
	test_segment_desription();
// this order is relevant for the assignment of numbers:
	wzMaterial       air;		// default: 1
	wzMaterial       ground; 	// 2
	wzMaterial       water;  	// 3
	wzMaterial       stone;  	// 4
	wzMaterial       sand;   	// 5
	wzMaterial       clay;   	// 6 (Lehm)
	wzMaterial       lawn;   	// 7 (Rasen)
	wzMaterial       forest; 	// 8
	wzMaterial	 concrete;	// 9 (Beton)
	wzMaterial	 asphalt; 	// 10
	wzMaterial	 steel;		// 11 (Stahl)
	wzRegion	 reg[wzexampleregions];
	wzFace           boundary;	// default
	wzFace           porous;
	wzFace           impermeable;
	wzEdge     	 edge;		// default
	wzVertex         vertex;	// default
	wzArray<wzFloat> matCoeff;
	wzArray<wzFloat> bCoeff;
	wzArray<BoundaryCondition> bCondition;
};
</PRE>

<PRE>
test_segment_desription::test_segment_desription()
:wzSegmentDescription()
// this order is not relevant for the assignment of numbers:
,air("air",wzColor("#099011311"))
,ground("ground",wzColor("#201000"))
,water("water",wzColor("#000300611"))
,stone("stone",wzColor("#111111111"))
,sand("sand",wzColor("#b11a00155"))
,clay("clay",wzColor("#311200211"))
,lawn("lawn",wzColor("#000d11100"))
,forest("forest",wzColor("#100300111"))
,concrete("concrete",wzColor("#300300300"))
,asphalt("asphalt",wzColor("#100011211"))
,steel("steel",wzColor("#400711911"))
,boundary("boundary",   wzColor(0x00,0x00,0x00))
,porous("porous",	wzColor(0x00,0x20,0xff))
,impermeable("impermeable",	wzColor(0x00,0x20,0xff))
,edge("edge",           wzColor(0x00,0x00,0xff))
,vertex("vertex",       wzColor(0x00,0xff,0x00))
,matCoeff(Region)		// matCoeff is defined on materials/regions
,bCoeff(Face)			// bCoeff is defined on boundary conditions
,bCondition(Face)
{int i; char *s;
 for(i=0;i<wzexampleregions;i++){
	s = new char[20];
	sprintf(s,"region %d",i);
	reg[i] = wzRegion(s,wzColor(0x00+i*0x4,0x20,0x0));
 }
 matCoeff[air]=0.01;
 matCoeff[water]=2.09;
 bCoeff[boundary]=0.01;
 bCoeff[porous]=0.81;
 bCoeff[impermeable]=0.042;
 bCondition[boundary]=Neumann;
 bCondition[porous]=Neumann;
 bCondition[impermeable]=Cauchy;
}
</PRE>