Partially working Karman Vortexs
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@ -32,7 +32,7 @@ jmax 50 # number of interior cells in y-direction
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# Time Data:
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# Time Data:
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# ---------
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# ---------
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te 100.0 # final time
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te 60.0 # final time
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dt 0.02 # time stepsize
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dt 0.02 # time stepsize
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tau 0.5 # safety factor for time stepsize control (<0 constant delt)
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tau 0.5 # safety factor for time stepsize control (<0 constant delt)
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@ -62,7 +62,7 @@ y2 4.0
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# -----------------------
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# -----------------------
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# Shape 0 disable, 1 Rectangle/Square, 2 Circle
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# Shape 0 disable, 1 Rectangle/Square, 2 Circle
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shape 1
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shape 0
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xCenter 10.0
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xCenter 10.0
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yCenter 2
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yCenter 2
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xRectLength 6.0
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xRectLength 6.0
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@ -32,7 +32,7 @@ jmax 100 # number of interior cells in y-direction
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# Time Data:
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# Time Data:
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# ---------
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# ---------
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te 60.0 # final time
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te 10.0 # final time
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dt 0.02 # time stepsize
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dt 0.02 # time stepsize
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tau 0.5 # safety factor for time stepsize control (<0 constant delt)
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tau 0.5 # safety factor for time stepsize control (<0 constant delt)
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@ -42,7 +42,7 @@ tau 0.5 # safety factor for time stepsize control (<0 constant delt)
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itermax 1000 # maximal number of pressure iteration in one time step
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itermax 1000 # maximal number of pressure iteration in one time step
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eps 0.001 # stopping tolerance for pressure iteration
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eps 0.001 # stopping tolerance for pressure iteration
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rho 0.5
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rho 0.5
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omg 1.7 # relaxation parameter for SOR iteration
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omg 1.8 # relaxation parameter for SOR iteration
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gamma 0.9 # upwind differencing factor gamma
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gamma 0.9 # upwind differencing factor gamma
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# Particle Tracing Data:
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# Particle Tracing Data:
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72
BasicSolver/2D-seq/karman.par
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72
BasicSolver/2D-seq/karman.par
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#==============================================================================
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# Laminar Canal Flow
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#==============================================================================
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# Problem specific Data:
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# ---------------------
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name karman # name of flow setup
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bcTop 1 # flags for boundary conditions
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bcBottom 1 # 1 = no-slip 3 = outflow
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bcLeft 3 # 2 = free-slip 4 = periodic
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bcRight 3 #
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gx 0.0 # Body forces (e.g. gravity)
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gy 0.0 #
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re 10000.0 # Reynolds number
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u_init 1.0 # initial value for velocity in x-direction
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v_init 0.0 # initial value for velocity in y-direction
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p_init 0.0 # initial value for pressure
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# Geometry Data:
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# -------------
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xlength 30.0 # domain size in x-direction
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ylength 4.0 # domain size in y-direction
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imax 200 # number of interior cells in x-direction
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jmax 50 # number of interior cells in y-direction
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# Time Data:
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# ---------
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te 100.0 # final time
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dt 0.02 # time stepsize
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tau 0.5 # safety factor for time stepsize control (<0 constant delt)
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# Pressure Iteration Data:
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# -----------------------
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itermax 200 # maximal number of pressure iteration in one time step
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eps 0.001 # stopping tolerance for pressure iteration
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rho 0.52
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omg 1.75 # relaxation parameter for SOR iteration
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gamma 0.9 # upwind differencing factor gamma
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# Particle Tracing Data:
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# -----------------------
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numberOfParticles 60
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startTime 0
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injectTimePeriod 0.5
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writeTimePeriod 0.5
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x1 0.0
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y1 1.9
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x2 0.0
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y2 2.1
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# Obstacle Geometry Data:
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# -----------------------
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# Shape 0 disable, 1 Rectangle/Square, 2 Circle
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shape 2
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xCenter 4.0
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yCenter 2.0
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xRectLength 2.0
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yRectLength 1.0
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circleRadius 1.0
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#===============================================================================
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File diff suppressed because it is too large
Load Diff
@ -78,7 +78,7 @@ int main (int argc, char** argv)
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/* Added function for particle tracing. Will inject and advance particles as per timePeriod */
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/* Added function for particle tracing. Will inject and advance particles as per timePeriod */
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//trace(&particletracer, solver.u, solver.v, t);
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trace(&particletracer, solver.u, solver.v, t);
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t += solver.dt;
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t += solver.dt;
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nt++;
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nt++;
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@ -23,7 +23,7 @@
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#define S(i, j) s[(j) * (imax + 2) + (i)]
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#define S(i, j) s[(j) * (imax + 2) + (i)]
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#define RHS(i, j) rhs[(j) * (imax + 2) + (i)]
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#define RHS(i, j) rhs[(j) * (imax + 2) + (i)]
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static double distance(i, j, iCenter, jCenter)
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static double distance(double i, double j, double iCenter, double jCenter)
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{
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{
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return sqrt(pow(iCenter - i, 2)
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return sqrt(pow(iCenter - i, 2)
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+ pow(jCenter - j, 2) * 1.0);
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+ pow(jCenter - j, 2) * 1.0);
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@ -133,10 +133,11 @@ void initSolver(Solver* solver, Parameter* params)
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double invSqrSum = 1.0 / (dx * dx) + 1.0 / (dy * dy);
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double invSqrSum = 1.0 / (dx * dx) + 1.0 / (dy * dy);
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solver->dtBound = 0.5 * solver->re * 1.0 / invSqrSum;
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solver->dtBound = 0.5 * solver->re * 1.0 / invSqrSum;
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int iCenter = 0, jCenter = 0, iRectLength = 0, jRectLength = 0, radius = 0;
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double xCenter = 0, yCenter = 0, radius = 0;
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double x1=0, x2=0, y1=0, y2=0;
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double x1=0, x2=0, y1=0, y2=0;
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int* s = solver->s;
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int* s = solver->s;
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switch(params->shape)
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switch(params->shape)
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{
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{
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@ -161,15 +162,15 @@ void initSolver(Solver* solver, Parameter* params)
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break;
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break;
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case CIRCLE:
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case CIRCLE:
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iCenter = params->xCenter/dx;
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xCenter = params->xCenter;
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jCenter = params->yCenter/dy;
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yCenter = params->yCenter;
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radius = params->circleRadius;
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radius = params->circleRadius;
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for (int j = 1; j < jmax + 1; j++)
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for (int j = 1; j < jmax + 1; j++)
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{
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{
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for (int i = 1; i < imax + 1; i++)
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for (int i = 1; i < imax + 1; i++)
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{
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{
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if(distance(i, j, iCenter, jCenter) <= radius)
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if(distance((i*dx), (j*dy), xCenter, yCenter) <= radius)
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{
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{
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S(i, j) = LOCAL;
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S(i, j) = LOCAL;
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}
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}
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@ -605,6 +606,13 @@ void setSpecialBoundaryCondition(Solver* solver)
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if(S(0,j) == NONE) U(0, j) = 1.0;
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if(S(0,j) == NONE) U(0, j) = 1.0;
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}
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}
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}
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}
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else if (strcmp(solver->problem, "karman") == 0)
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{
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for (int j = 1; j < jmax + 1; j++)
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{
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U(0, j) = 1.0;
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}
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}
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}
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}
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void setObjectBoundaryCondition(Solver* solver)
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void setObjectBoundaryCondition(Solver* solver)
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@ -1,7 +1,6 @@
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set terminal png size 1800,768 enhanced font ,12
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set terminal png size 3600,768 enhanced font ,28
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set output 'velocity.png'
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set output 'velocity.png'
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set size ratio -1
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set datafile separator whitespace
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set datafile separator whitespace
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set object 1 rect from 0.0,0.0 to 1.0,0.5 lw 5
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plot 'velocity.dat' using 1:2:3:4:5 with vectors filled head size 0.01,20,60 lc palette
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plot 'velocity.dat' using 1:2:3:4:5 with vectors filled head size 0.01,20,60 lc palette
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File diff suppressed because it is too large
Load Diff
Binary file not shown.
Before Width: | Height: | Size: 126 KiB After Width: | Height: | Size: 289 KiB |
12
BasicSolver/2D-seq/vis_files/karman_animate.plot
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12
BasicSolver/2D-seq/vis_files/karman_animate.plot
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unset border; unset tics; unset key;
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set term gif animate delay 20
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set output "trace.gif"
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set xrange [0:30]
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set yrange [0:4]
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set object 1 circle front at 4.0,2.0 size 1.0 fillcolor rgb "black" lw 2
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do for [ts=0:300] {
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plot "particles_".ts.".dat" with points pointtype 7
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}
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unset output
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Binary file not shown.
Before Width: | Height: | Size: 1.8 MiB After Width: | Height: | Size: 1.2 MiB |
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