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FEATool Multiphysics
v1.17.5
Finite Element Analysis Toolbox
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FEATool Multiphysics
v1.17.5
Finite Element Analysis Toolbox
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SU2 MATLAB SU2 CFD solver CLI interface.
[ U, TLIST, VARS ] = SU2( PROB, VARARGIN ) Export, solves, or imports the solved problem described in the PROB finite element struct using the SU2 CFD solver. Accepts the following property/value pairs.
Input Value/{Default} Description
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mode check, export, solve, import Command mode(s) to call (default all)
cfg default Default SU2 config
turb scalar {0} Turbulence model: 0: none/laminar
1: Spalart-Allmaras, 2:k-omega (SST)
init scalar {[]} Initial values []: init expressions
i: use solution
nproc scalar {numcores/2} Number of processors to use
workdir default SU2 work directory
fname default SU2 work filename
logfname default SU2 log/output filename
fid/logfid scalar {1} Log file/message output file handle
hax handle Axis handle to plot convergence
naxts scalar {250} Maximum number of time steps to plot
Also accepts the following SU2 cfg property/value pairs to set the cfg file during export
Property Value/{Default} Description
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fname default SU2 work filename
solver string {INC_NAVIER_STOKES} SU2 governing equations/solver
ischeme scalar/{0} Time stepping scheme
0 - Stationary
1 - Time stepping
2 - Dual time stepping (1st order)
3 - Dual time stepping (2nd order)
tstep scalar/{0.1} Time step size
tmax scalar/{1} Maximum simulation time
wrtfreq scalar/{1} Frequency to output solution files/to screen
tol scalar {1e-8} Stopping criteria for (P) residuals
maxit scalar/{9999/20} Maximum number of iterations (stat/timedep)
rho scalar {1.0} Density (constant)
miu scalar {1.0} Viscosity (constant)
upwind string {venk_wang/muscl} Discretization scheme, valid options are
the central schemes JST and LAX-FRIEDRICH,
or UPWIND (equivalent to FDS for incompressible,
ROE for compressible) with MUSCL and slope limiting
NONE, VENKATAKRISHNAN, VENKATAKRISHNAN_WANG,
BARTH_JESPERSEN, or VAN_ALBADA_EDGE
init vector {[1,0,0]} Initial conditions (for velocity)
restart string {} Restart (CSV) file
mesh string {mesh.su2} SU2 mesh filename
nsdim int {2} Number of space dimensions
isaxi boolean {false} Axisymmetric mode (only compressible)
1) Laminar Hagen-Poiseuille flow in a channel with convergence plot.
n = 20; rho = 1; miu = 1; uin = 1;
fea.sdim = {'x' 'y'};
fea.geom.objects = { gobj_rectangle(0,3,0,1) };
fea.grid = rectgrid( 3*n, 1*n, [0 3;0 1] );
fea = addphys(fea,@navierstokes);
fea.phys.ns.eqn.coef{1,end} = { rho };
fea.phys.ns.eqn.coef{2,end} = { miu };
fea.phys.ns.eqn.coef{5,end} = { uin };
fea.phys.ns.bdr.sel(2) = 4;
fea.phys.ns.bdr.sel(4) = 2;
fea.phys.ns.bdr.coef{2,end}{1,4} = uin;
fea = parsephys( fea );
fea = parseprob( fea );
fea.sol.u = su2( fea, 'tol', 1e-6, 'hax', axes() );
figure
subplot(2,1,1)
postplot( fea, 'surfexpr', 'p', 'isoexpr', 'sqrt(u^2+v^2)', 'arrowexpr', {'u' 'v'} )
subplot(2,1,2), hold on, grid on
xlabel('Velocity profile at outlet'), ylabel('y')
x = 3*ones(1,100);
y = linspace(0,1,100);
U_ref = 6*uin*(y.*(1-y))./1^2;
U = evalexpr( 'sqrt(u^2+v^2)', [x;y], fea );
plot( U_ref, y, 'r--', 'linewidth', 3 )
plot( U, y, 'b-', 'linewidth', 2.5 )
legend( 'Analytic solution', 'Computed solution' )