user.c

CSIMPLE2d CFD C源程序

/*
* user.c : user program of the SIMPLE 
*/
/*
* 注意C与FORTRAN的差别：
* 1. C中的数组下标是从0开始的,而FORTRAN则是从1开始的
*   因此本程序中的一些量(如L1,L2,L3,M1,M2,M3,NFMAX,nGam,nP,nRho,IPref,JPref)比FORTRAN程序中的小1
*   所有数组的下标从0开始,程序中数组下标中出现的数字比FORTRAN中的小1
* 2. C的数组是按行优先读的,而FORTRAN的则是按列读的
*   因此本程序中的F的定义不同,是F[NFMAX][I][J]
* 3. C用指针来实现FORTRAN的EQUIVALENCE功能。
*   如定义double (*U)[NSIZE],U=F[0],则U[i][j]等同于F[0][i][j];
*/

#include "staincl.h"
#include "extern.h"

/*global variable for user */

double (*T)[NSIZE];
double htc;
double Q;
double Tf;
double Gam1;
double gy;

short method;

/*******************************************************************************
* functon name:	fnGrid
* description:	in this file you should do:
*			--initialize variable you defined
*			--set the filename of the output file, the step can be ignored 
*			--set the title of the variable that will be calculated
*			--set which variable will be calc and print
*			--set axis mode-nMode: 1-cartesian, 2-axisymmetric, 3-polar
*			--set the number of steps
*			--set the number of grids
*			--devide grids
********************************************************************************/
void fnGrid()
{
	T=F[4];
	method=1;
	htc=5;
	Q=50;
	Tf=100;
	Gam1=1;

	szTitle[4]="temprature";
	szTitle[12]="conductor";
	bSolve[4]=TRUE;
	bPrint[4]=TRUE;
	bPrint[12]=TRUE;
	iLast=50;
	nMode=2;
	XL=2.0;
	YL=1.0;
	R[0]=1;
	L1=6;//
	M1=6;//

	fnUGrid();
}

/*******************************************************************************
* functon name:	fnStart
* description:	in this file you should do:
*			--initialize the 
********************************************************************************/
void fnStart()
{
	int i,j;

	for(i=0;i<=L1;i++)
	{
		for(j=0;j<=M1;j++)
		{
			T[i][j]=200;
			if(i==0)
				T[i][j]=100*(1+Y[j]);
		}
	}
}

/*******************************************************************************
* functon name:	fnDense
* description:	in this file you should do:
*			--calc the density if needed
********************************************************************************/
void fnDense()
{

}

/*******************************************************************************
* functon name:	fnbound
* description:	in this file you should do:
*			--calc the boundary
********************************************************************************/
void fnBound()
{
	int i,j;

	for(i=1;i<=L2;i++)
	{
		T[i][M1]=T[i][M2];
		T[i][0]=T[i][1]+Q*YDif[1]/Gam1;
	}
	gy=Gam1/XDif[L1];
	for(j=1;j<=M2;j++)
		T[L1][j]=(htc*Tf+gy*T[L2][j])/(htc+gy);

}

/*******************************************************************************
* functon name:	fnOutput
* description:	in this file you should do:
*			--print calc info to terminal or write to file
********************************************************************************/
void fnOutPut()
{
	if(iIter==0)
	{
		fprintf(pFileOut,"\n  Method=%d",method);
		fprintf(pFileOut,"\n      Iter        T[4][5]      T[5][3]");
	}
	fprintf(pFileOut,"\n     %4d     %12.8f    %12.8f ",iIter,T[3][4],T[4][2]);

	if(iIter==iLast)
		fnPrint();
}

/*******************************************************************************
* functon name:	fnGamsor
* description:	in this file you should do:
*			--set the gam 
*			--set the sc,sp
********************************************************************************/
void fnGamSor()
{
	int i,j;
	double res,ares;

	for(i=0;i<=L1;i++)
		for(j=0;j<=M1;j++)
			Gam[i][j]=Gam1;
	for(i=3;i<=4;i++)
		for(j=3;j<=6;j++)
			Gam[i][j]=0.2*(1+T[i][j]/100);

	for(i=1;i<=L2;i++)
	{
		for(j=1;j<=M2;j++)
		{
			Con[i][j]=100;
			AP[i][j]=-0.5;
		}
	}

	if(method==2)
	{
		for(i=1;i<=L2;i++)
		{
			Gam[i][M1]=0;
			Gam[i][0]=0;
			Con[i][1]+=Q*R[0]/ARX[1];
		}
		res=1/htc+1/gy;
		ares=1/(res*XCV[L2]);
		for(j=1;j<=M2;j++)
		{
			Gam[L1][j]=0;
			Con[L2][j]+=ares*Tf;
			AP[L2][j]-=ares;
		}
	}

}