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test_co_simulation_coupled_solver.py
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import KratosMultiphysics as KM
import KratosMultiphysics.KratosUnittest as KratosUnittest
from KratosMultiphysics.CoSimulationApplication.co_simulation_analysis import CoSimulationAnalysis
from KratosMultiphysics.CoSimulationApplication.base_classes.co_simulation_solver_wrapper import CoSimulationSolverWrapper
from KratosMultiphysics.CoSimulationApplication.base_classes.co_simulation_coupled_solver import CoSimulationCoupledSolver
from KratosMultiphysics.CoSimulationApplication.helpers.dummy_solver_wrapper import DummySolverWrapper
class TestCoupledSolverGetSolver(KratosUnittest.TestCase):
def test_GetSolver_zero_levels(self):
# CoSim contains only one SolverWrapper (not really CoSimulation...)
params = KM.Parameters("""{
"problem_data" : {
"problem_name" : "my_dummy_solver",
"start_time" : 0.0,
"end_time" : 3.0,
"echo_level" : 0,
"print_colors" : true,
"parallel_type" : "OpenMP"
},
"solver_settings" : {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
}
}""")
co_sim_analysis = CoSimulationAnalysis(params)
top_level_solver_wrapper = co_sim_analysis._GetSolver()
self.assertIsInstance(top_level_solver_wrapper, CoSimulationSolverWrapper)
self.assertEqual(top_level_solver_wrapper.name, "my_dummy_solver")
def test_GetSolver_one_level(self):
params = KM.Parameters("""{
"problem_data" : {
"problem_name" : "coupling_solver_top_level",
"start_time" : 0.0,
"end_time" : 3.0,
"echo_level" : 0,
"print_colors" : true,
"parallel_type" : "OpenMP"
},
"solver_settings" : {
"type" : "coupled_solvers.gauss_seidel_weak",
"coupling_sequence" : [{
"name": "structure",
"output_data_list": [],
"input_data_list": []
},{
"name": "aux_structure",
"output_data_list": [],
"input_data_list": []
},{
"name": "fluid",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fluid": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
},
"structure": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
},
"aux_structure": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
}
}
}
}""")
co_sim_analysis = CoSimulationAnalysis(params)
top_level_solver_wrapper = co_sim_analysis._GetSolver()
fluid_solver_wrapper = co_sim_analysis._GetSolver("fluid")
structural_solver_wrapper = co_sim_analysis._GetSolver("structure")
aux_structural_solver_wrapper = co_sim_analysis._GetSolver("aux_structure")
self.assertIsInstance(top_level_solver_wrapper, CoSimulationCoupledSolver)
self.assertIsInstance(fluid_solver_wrapper, CoSimulationSolverWrapper)
self.assertIsInstance(structural_solver_wrapper, CoSimulationSolverWrapper)
self.assertIsInstance(aux_structural_solver_wrapper, CoSimulationSolverWrapper)
self.assertEqual(top_level_solver_wrapper.name, "coupling_solver_top_level")
self.assertEqual(fluid_solver_wrapper.name, "fluid")
self.assertEqual(structural_solver_wrapper.name, "structure")
self.assertEqual(aux_structural_solver_wrapper.name, "aux_structure")
def test_GetSolver_two_levels(self):
params = KM.Parameters("""{
"problem_data" : {
"problem_name" : "coupling_solver_top_level",
"start_time" : 0.0,
"end_time" : 3.0,
"echo_level" : 0,
"print_colors" : true,
"parallel_type" : "OpenMP"
},
"solver_settings" : {
"type" : "coupled_solvers.gauss_seidel_weak",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
},
"coupling_sequence" : [{
"name": "fsi",
"output_data_list": [],
"input_data_list": []
},{
"name": "controller",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fsi": {
"type" : "coupled_solvers.gauss_seidel_weak",
"coupling_sequence" : [{
"name": "structure",
"output_data_list": [],
"input_data_list": []
},{
"name": "fluid",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fluid": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
},
"structure": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
}
}
},
"controller": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
}
}
}
}""")
co_sim_analysis = CoSimulationAnalysis(params)
top_level_solver_wrapper = co_sim_analysis._GetSolver()
controller_solver_wrapper = co_sim_analysis._GetSolver("controller")
fsi_solver_wrapper = co_sim_analysis._GetSolver("fsi")
fluid_solver_wrapper = co_sim_analysis._GetSolver("fsi.fluid")
structural_solver_wrapper = co_sim_analysis._GetSolver("fsi.structure")
fsi_fluid_solver_wrapper = fsi_solver_wrapper._GetSolver("fluid")
fsi_structural_solver_wrapper = fsi_solver_wrapper._GetSolver("structure")
self.assertIsInstance(top_level_solver_wrapper, CoSimulationCoupledSolver)
self.assertIsInstance(controller_solver_wrapper, CoSimulationSolverWrapper)
self.assertIsInstance(fsi_solver_wrapper, CoSimulationCoupledSolver)
self.assertIsInstance(fluid_solver_wrapper, CoSimulationSolverWrapper)
self.assertIsInstance(structural_solver_wrapper, CoSimulationSolverWrapper)
self.assertIsInstance(fsi_fluid_solver_wrapper, CoSimulationSolverWrapper)
self.assertIsInstance(fsi_structural_solver_wrapper, CoSimulationSolverWrapper)
self.assertEqual(top_level_solver_wrapper.name, "coupling_solver_top_level")
self.assertEqual(controller_solver_wrapper.name, "controller")
self.assertEqual(fsi_solver_wrapper.name, "fsi")
self.assertEqual(fluid_solver_wrapper.name, "fluid")
self.assertEqual(structural_solver_wrapper.name, "structure")
self.assertEqual(fsi_fluid_solver_wrapper.name, "fluid")
self.assertEqual(fsi_structural_solver_wrapper.name, "structure")
self.assertIs(fluid_solver_wrapper, fsi_fluid_solver_wrapper)
self.assertIs(structural_solver_wrapper, fsi_structural_solver_wrapper)
class TestCoupledSolverModelAccess(KratosUnittest.TestCase):
def test_model_access_one_level(self):
params = KM.Parameters("""{
"coupling_sequence" : [{
"name": "structure",
"output_data_list": [],
"input_data_list": []
},{
"name": "fluid",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fluid": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "fl_model_part"
}
},
"structure": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "strct_model_part"
}
}
}
}""")
coupled_solver = CoSimulationCoupledSolver(params, None, "for_testing")
with self.assertRaisesRegex(Exception, 'No solver_name was specified!'):
coupled_solver.model[""]
# checking Models
fluid_model = coupled_solver.model["fluid"]
structural_model = coupled_solver.model["structure"]
self.assertIsInstance(fluid_model, KM.Model)
self.assertIsInstance(structural_model, KM.Model)
self.assertIsNot(structural_model, fluid_model)
self.assertIs(fluid_model, coupled_solver._GetSolver("fluid").model)
self.assertIs(structural_model, coupled_solver._GetSolver("structure").model)
# checking ModelParts
fluid_main_mp = coupled_solver.model["fluid.fl_model_part"]
self.assertIsInstance(fluid_main_mp, KM.ModelPart)
self.assertEqual(fluid_main_mp.Name, "fl_model_part")
# creating some submodelparts to see if getting those also works
smp_1 = fluid_main_mp.CreateSubModelPart("boundary")
smp_11 = smp_1.CreateSubModelPart("slip")
boundary_mp = coupled_solver.model["fluid.fl_model_part.boundary"]
self.assertIsInstance(boundary_mp, KM.ModelPart)
self.assertEqual(boundary_mp.Name, "boundary")
self.assertEqual(boundary_mp.FullName(), "fl_model_part.boundary")
slip_mp = coupled_solver.model["fluid.fl_model_part.boundary.slip"]
self.assertIsInstance(slip_mp, KM.ModelPart)
self.assertEqual(slip_mp.Name, "slip")
self.assertEqual(slip_mp.FullName(), "fl_model_part.boundary.slip")
def test_model_access_two_levels(self):
params = KM.Parameters("""{
"type" : "coupled_solvers.gauss_seidel_weak",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
},
"coupling_sequence" : [{
"name": "fsi",
"output_data_list": [],
"input_data_list": []
},{
"name": "controller",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fsi": {
"type" : "coupled_solvers.gauss_seidel_weak",
"coupling_sequence" : [{
"name": "structure",
"output_data_list": [],
"input_data_list": []
},{
"name": "fluid",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fluid": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "fl_model_part"
}
},
"structure": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "strct_model_part"
}
}
}
},
"controller": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "interface"
}
}
}
}""")
coupled_solver = CoSimulationCoupledSolver(params, None, "for_testing")
fluid_main_mp = coupled_solver.model["fsi.fluid.fl_model_part"]
self.assertIsInstance(fluid_main_mp, KM.ModelPart)
self.assertEqual(fluid_main_mp.Name, "fl_model_part")
# creating some submodelparts to see if getting those also works
smp_1 = fluid_main_mp.CreateSubModelPart("boundary")
smp_1.CreateSubModelPart("slip")
boundary_mp = coupled_solver.model["fsi.fluid.fl_model_part.boundary"]
self.assertIsInstance(boundary_mp, KM.ModelPart)
self.assertEqual(boundary_mp.Name, "boundary")
self.assertEqual(boundary_mp.FullName(), "fl_model_part.boundary")
slip_mp = coupled_solver.model["fsi.fluid.fl_model_part.boundary.slip"]
self.assertIsInstance(slip_mp, KM.ModelPart)
self.assertEqual(slip_mp.Name, "slip")
self.assertEqual(slip_mp.FullName(), "fl_model_part.boundary.slip")
class TestCoupledSolverCouplingInterfaceDataAccess(KratosUnittest.TestCase):
def test_coupling_interface_data_access_one_level(self):
pass
def test_coupling_interface_data_access_two_levels(self):
pass
class TestCoupledSolverPassingModel(KratosUnittest.TestCase):
def test_pass_model_to_solver_wrapper(self):
# CoSim contains only one SolverWrapper (not really CoSimulation...)
params = KM.Parameters("""{
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
}""")
solver_without_outside_model = DummySolverWrapper(params, None, "dummy_2")
self.assertIsInstance(solver_without_outside_model.model, KM.Model)
outside_model = KM.Model()
solver = DummySolverWrapper(params, outside_model, "dummy")
self.assertIs(outside_model, solver.model)
with self.assertRaisesRegex(Exception, 'A solver wrapper can either be passed a Model\nor None, got object of type'):
DummySolverWrapper(params, "wrongtype", "dummy")
def test_pass_model_zero_levels(self):
# CoSim contains only one SolverWrapper (not really CoSimulation...)
params = KM.Parameters("""{
"problem_data" : {
"problem_name" : "my_dummy_solver",
"start_time" : 0.0,
"end_time" : 3.0,
"echo_level" : 0,
"print_colors" : true,
"parallel_type" : "OpenMP"
},
"solver_settings" : {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
}
}""")
outside_model = KM.Model()
co_sim_analysis = CoSimulationAnalysis(params, outside_model)
top_level_solver_wrapper = co_sim_analysis._GetSolver()
self.assertIs(outside_model, top_level_solver_wrapper.model)
def test_not_passing_model_zero_levels(self):
# CoSim contains only one SolverWrapper (not really CoSimulation...)
params = KM.Parameters("""{
"problem_data" : {
"problem_name" : "my_dummy_solver",
"start_time" : 0.0,
"end_time" : 3.0,
"echo_level" : 0,
"print_colors" : true,
"parallel_type" : "OpenMP"
},
"solver_settings" : {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
}
}
}""")
co_sim_analysis = CoSimulationAnalysis(params)
top_level_solver_wrapper = co_sim_analysis._GetSolver()
self.assertIsInstance(top_level_solver_wrapper.model, KM.Model)
def test_pass_model_one_level(self):
params = KM.Parameters("""{
"problem_data" : {
"problem_name" : "my_dummy_solver",
"start_time" : 0.0,
"end_time" : 3.0,
"echo_level" : 0,
"print_colors" : true,
"parallel_type" : "OpenMP"
},
"solver_settings" : {
"type" : "coupled_solvers.gauss_seidel_weak",
"coupling_sequence" : [{
"name": "structure",
"output_data_list": [],
"input_data_list": []
},{
"name": "fluid",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fluid": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "fl_model_part"
}
},
"structure": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "strct_model_part"
}
}
}
}
}""")
structure_model = KM.Model()
with self.assertRaisesRegex(Exception, 'A coupled solver can either be passed a dict of Models\nor None, got object of type'):
co_sim_analysis = CoSimulationAnalysis(params, structure_model)
with self.assertRaisesRegex(Exception, 'A solver wrapper can either be passed a Model\nor None, got object of type'): # this throws in the SolverWrapper
co_sim_analysis = CoSimulationAnalysis(params, {"structure": "structure_model"})
with self.assertRaisesRegex(Exception, 'A Model was given for solver "wrong_name" but this solver does not exist!'):
co_sim_analysis = CoSimulationAnalysis(params, {"wrong_name": structure_model})
co_sim_analysis = CoSimulationAnalysis(params, {"structure": structure_model}) # name has to match the one in json!
top_level_solver_wrapper = co_sim_analysis._GetSolver()
fluid_solver_wrapper = co_sim_analysis._GetSolver("fluid")
structural_solver_wrapper = co_sim_analysis._GetSolver("structure")
self.assertIs(structure_model, top_level_solver_wrapper.model["structure"])
self.assertIsNot(structure_model, top_level_solver_wrapper.model["fluid"])
self.assertIs(structure_model, structural_solver_wrapper.model)
self.assertIsNot(structure_model, fluid_solver_wrapper.model)
def test_pass_model_two_levels(self):
params = KM.Parameters("""{
"problem_data" : {
"problem_name" : "my_dummy_solver",
"start_time" : 0.0,
"end_time" : 3.0,
"echo_level" : 0,
"print_colors" : true,
"parallel_type" : "OpenMP"
},
"solver_settings" : {
"type" : "coupled_solvers.gauss_seidel_weak",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "dummy"
},
"coupling_sequence" : [{
"name": "fsi",
"output_data_list": [],
"input_data_list": []
},{
"name": "controller",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fsi": {
"type" : "coupled_solvers.gauss_seidel_weak",
"coupling_sequence" : [{
"name": "structure",
"output_data_list": [],
"input_data_list": []
},{
"name": "fluid",
"output_data_list": [],
"input_data_list": []
}],
"solvers" : {
"fluid": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "fl_model_part"
}
},
"structure": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "strct_model_part"
}
}
}
},
"controller": {
"type" : "helpers.dummy_solver_wrapper",
"solver_wrapper_settings": {
"time_step" : 1.0,
"domain_size" : 1,
"main_model_part_name" : "interface"
}
}
}
}
}""")
structure_model = KM.Model()
controller_model = KM.Model()
models = {
"controller" : controller_model,
"fsi" : {
"structure" : structure_model
}
}
co_sim_analysis = CoSimulationAnalysis(params, models)
top_level_solver_wrapper = co_sim_analysis._GetSolver()
fluid_solver_wrapper = co_sim_analysis._GetSolver("fsi.fluid")
structural_solver_wrapper = co_sim_analysis._GetSolver("fsi.structure")
controller_solver_wrapper = co_sim_analysis._GetSolver("controller")
self.assertIs(structure_model, structural_solver_wrapper.model)
self.assertIs(structure_model, top_level_solver_wrapper.model["fsi.structure"])
self.assertIs(controller_model, controller_solver_wrapper.model)
self.assertIs(controller_model, top_level_solver_wrapper.model["controller"])
self.assertIsNot(structure_model, fluid_solver_wrapper.model)
self.assertIsNot(controller_model, fluid_solver_wrapper.model)
self.assertIs(fluid_solver_wrapper.model, top_level_solver_wrapper.model["fsi.fluid"])
if __name__ == '__main__':
KratosUnittest.main()