ansys.dyna.core.pre.dynaicfd.ICFDAnalysis#

class ansys.dyna.core.pre.dynaicfd.ICFDAnalysis#

Bases: ansys.dyna.core.pre.dynabase.BaseObj

Activates an ICFD analysis and defines associated control parameters.

defined_timestep = False#

defined_volumemesh = False#

defined_surfmesh = False#

defined_type = False#

defined_output = False#

defined_fsi = False#

defined_steady_state = False#

defined_coupling_dem = False#

defined_mesh_adapt = False#

stub#

type = 'analysis_icfd'#

set_type(analysis_type=ICFD_AnalysisType.TRANSIENT_ANALYSIS)#

Set the type of the CFD analysis.

Parameters:

analysis_typeICFD_AnalysisType: Analysis type. The default is TRANSIENT_ANALYSIS.

set_output(messagelevel=ICFD_MessageLevel.TIMESTEP_INFORMATION, iteration_interval=0)#

Modify default values for screen and file outputs related to the fluid solver only.

Parameters:

messagelevelICFD_MessageLevel, optional: Message level. The default is TIMESTEP_INFORMATION.
iteration_intervalint, optional: Iteration interval to print the output at. The default is 0.

set_fsi(couplingdir=ICFD_CouplingDirection.TWO_WAY_COUPLING)#

Modify default values for the fluid-structure interaction coupling algorithm.

Parameters:

couplingdirICFD_CouplingDirection, optional: Coupling direction to the solver. The default is TWO_WAY_COUPLING.

set_steady_state(max_iteration=1000000.0, momentum_tol_limit=0.001, pressure_tol_limit=0.001, temperature_tol_limit=0.001, velocity_relax_param=0.3, pressure_relax_param=0.7)#

Set convergence options for the steady state solver.

Parameters:

max_iterationint, optional: Maximum number of iterations to reach convergence. The default is 1000000.0.
momentum_tol_limitfloat, optional: Tolerance limits for the momentum equations. The default is 0.001.
pressure_tol_limitfloat, optional: Tolerance limits for the pressure equations. The default is 0.001.
temperature_tol_limitfloat, optional: Tolerance limits for the temperature equations. The default is 0.001.
velocity_relax_paramfloat, optional: Relaxation parameters for the velocity. The default is 0.3.
pressure_relax_paramfloat, optional: Relaxation parameters for the pressure. The default is 0.7.

set_timestep(timestep=0)#

Set the time step for the fluid problem.

Parameters:

dtfloat, optional: Time step for the fluid problem. The default is 0.

set_volume_mesh(mesh_growth_scale_factor=1.41)#

Modify the default value for automatic volume mesh generation.

Parameters:

mesh_growth_scale_factorfloat, optional: Maximum mesh size that the volume mesher is allowed to use when generating the volume mesh. The default is 1.41.

set_mesh_adaptivity(min_mesh_size=0, max_mesh_size=0, max_perceptual_error=0, num_iteration=0)#

Activate the adaptive mesh refinement feature.

Parameters:

min_mesh_sizefloat, optional: Minimum mesh size for the mesh generator. The default is 0.
max_mesh_sizefloat, optional: Maximum mesh size. The default is 0.
max_perceptual_errorfloat, optional: Maximum perceptual error allowed in the whole domain. The default is 0.
num_iterationint, optional: Number of iterations before a forced remeshing. The default is 0.

set_surface_mesh(remesh_method=ICFD_SurfRemeshMethod.LAPLACIAN_SMOOTHING)#

Enable automatic surface remeshing.

Parameters:

remesh_methodICFD_SurfRemeshMethod, optional: Whether to perform a surface remeshing. The default is LAPLACIAN_SMOOTHING.

set_coupling_dem(coupling_type=0, birth_time=0, death_time=1e+28, scale_factor=1, formulation=ICFD_CouplingForm.FORCE_BASED_ON_VELOCITY_DRAG_VALUE)#

Activate coupling between the ICFD and DEM solvers.

Parameters:

coupling_typeint, optional: Coupling direction to the solver. The default is 0.
birth_timefloat, optional: Birth time for the DEM coupling. The default is 0.
death_timefloat, optional: Death time for the DEM coupling. The default is 1e+28.
scale_factorfloat, optional: Scale factor applied to the force transmitted by the fluid to the structure. The default is 1.
formulationint, optional: Type of formulation to use in the coupling. The default is FORCE_BASED_ON_VELOCITY_DRAG_VALUE.

create()#: Create ICFD analysis.