示例#1
0
    def __init__(self,
                 problem,
                 pdofs,
                 drange,
                 is_overlap,
                 psol,
                 comm,
                 matrix_hook=None,
                 verbose=False):
        BasicEvaluator.__init__(self, problem, matrix_hook=matrix_hook)
        Struct.__init__(self,
                        pdofs=pdofs,
                        drange=drange,
                        is_overlap=is_overlap,
                        comm=comm,
                        verbose=verbose)

        variables = problem.get_variables()
        di = variables.di

        ebc_rows = []
        for ii, variable in enumerate(variables.iter_state(ordered=True)):
            eq_map = variable.eq_map
            ebc_rows.append(eq_map.eq_ebc + di.ptr[ii])
        self.ebc_rows = nm.concatenate(ebc_rows)

        self.psol_i = pp.create_local_petsc_vector(pdofs)

        self.gather, self.scatter = pp.create_gather_scatter(pdofs,
                                                             self.psol_i,
                                                             psol,
                                                             comm=comm)
    def test_boundary_fluxes( self ):
        import os.path as op
        from sfepy.linalg import rotation_matrix2d
        from sfepy.discrete.evaluate import BasicEvaluator
        from sfepy.discrete import Material
        problem = self.problem

        angles = [0, 30, 45]
        region_names = ['Left', 'Right', 'Gamma']
        values = [5.0, -5.0, 0.0]

        variables = problem.get_variables()
        get_state = variables.get_state_part_view
        state = self.state.copy(deep=True)

        problem.time_update(ebcs={}, epbcs={})
#        problem.save_ebc( 'aux.vtk' )

        state.apply_ebc()
        ev = BasicEvaluator( problem )
        aux = ev.eval_residual(state())

        field = variables['t'].field

        conf_m = problem.conf.get_item_by_name('materials', 'm')
        m = Material.from_conf(conf_m, problem.functions)

        name = op.join( self.options.out_dir,
                        op.split( problem.domain.mesh.name )[1] + '_%02d.mesh' ) 

        orig_coors = problem.get_mesh_coors().copy()
        ok = True
        for ia, angle in enumerate( angles ):
            self.report( '%d: mesh rotation %d degrees' % (ia, angle) )
            problem.domain.mesh.transform_coors( rotation_matrix2d( angle ),
                                                 ref_coors = orig_coors )
            problem.set_mesh_coors(problem.domain.mesh.coors,
                                   update_fields=True)
            problem.domain.mesh.write( name % angle, io = 'auto' )
            for ii, region_name in enumerate( region_names ):
                flux_term = 'd_surface_flux.i.%s( m.K, t )' % region_name
                val1 = problem.evaluate(flux_term, t=variables['t'], m=m)

                rvec = get_state( aux, 't', True )
                reg = problem.domain.regions[region_name]
                nods = field.get_dofs_in_region(reg, merge=True)
                val2 = rvec[nods].sum() # Assume 1 dof per node.

                ok = ok and ((abs( val1 - values[ii] ) < 1e-10) and
                             (abs( val2 - values[ii] ) < 1e-10))
                self.report( '  %d. %s: %e == %e == %e'\
                             % (ii, region_name, val1, val2, values[ii]) )

        # Restore original coordinates.
        problem.domain.mesh.transform_coors(rotation_matrix2d(0),
                                            ref_coors=orig_coors)
        problem.set_mesh_coors(problem.domain.mesh.coors,
                               update_fields=True)

        return ok
    def test_boundary_fluxes(self):
        import os.path as op
        from sfepy.linalg import rotation_matrix2d
        from sfepy.discrete.evaluate import BasicEvaluator
        from sfepy.discrete import Material
        problem = self.problem

        angles = [0, 30, 45]
        region_names = ['Left', 'Right', 'Gamma']
        values = [5.0, -5.0, 0.0]

        variables = problem.get_variables()
        get_state = variables.get_state_part_view
        state = self.state.copy(deep=True)

        problem.time_update(ebcs={}, epbcs={})
        #        problem.save_ebc( 'aux.vtk' )

        state.apply_ebc()
        ev = BasicEvaluator(problem)
        aux = ev.eval_residual(state())

        field = variables['t'].field

        conf_m = problem.conf.get_item_by_name('materials', 'm')
        m = Material.from_conf(conf_m, problem.functions)

        name = op.join(self.options.out_dir,
                       op.split(problem.domain.mesh.name)[1] + '_%02d.mesh')

        orig_coors = problem.get_mesh_coors().copy()
        ok = True
        for ia, angle in enumerate(angles):
            self.report('%d: mesh rotation %d degrees' % (ia, angle))
            problem.domain.mesh.transform_coors(rotation_matrix2d(angle),
                                                ref_coors=orig_coors)
            problem.set_mesh_coors(problem.domain.mesh.coors,
                                   update_fields=True)
            problem.domain.mesh.write(name % angle, io='auto')
            for ii, region_name in enumerate(region_names):
                flux_term = 'd_surface_flux.i.%s( m.K, t )' % region_name
                val1 = problem.evaluate(flux_term, t=variables['t'], m=m)

                rvec = get_state(aux, 't', True)
                reg = problem.domain.regions[region_name]
                nods = field.get_dofs_in_region(reg, merge=True)
                val2 = rvec[nods].sum()  # Assume 1 dof per node.

                ok = ok and ((abs(val1 - values[ii]) < 1e-10) and
                             (abs(val2 - values[ii]) < 1e-10))
                self.report( '  %d. %s: %e == %e == %e'\
                             % (ii, region_name, val1, val2, values[ii]) )

        # Restore original coordinates.
        problem.domain.mesh.transform_coors(rotation_matrix2d(0),
                                            ref_coors=orig_coors)
        problem.set_mesh_coors(problem.domain.mesh.coors, update_fields=True)

        return ok
示例#4
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    def __init__(self, problem, pdofs, drange, is_overlap, psol, comm, matrix_hook=None, verbose=False):
        BasicEvaluator.__init__(self, problem, matrix_hook=matrix_hook)
        Struct.__init__(self, pdofs=pdofs, drange=drange, is_overlap=is_overlap, comm=comm, verbose=verbose)

        variables = problem.get_variables()
        di = variables.di

        ebc_rows = []
        for ii, variable in enumerate(variables.iter_state(ordered=True)):
            eq_map = variable.eq_map
            ebc_rows.append(eq_map.eq_ebc + di.ptr[ii])
        self.ebc_rows = nm.concatenate(ebc_rows)

        self.psol_i = pp.create_local_petsc_vector(pdofs)

        self.gather, self.scatter = pp.create_gather_scatter(pdofs, self.psol_i, psol, comm=comm)
示例#5
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    def eval_residual(self, snes, psol, prhs):
        self.scatter(self.psol_i, psol)

        rhs_if = BasicEvaluator.eval_residual(self, self.psol_i[...], is_full=True)

        pp.assemble_rhs_to_petsc(
            prhs, rhs_if, self.pdofs, self.drange, self.is_overlap, self.comm, verbose=self.verbose
        )
示例#6
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    def eval_tangent_matrix(self, snes, psol, pmtx, ppmtx):
        self.scatter(self.psol_i, psol)

        mtx_if = BasicEvaluator.eval_tangent_matrix(self, self.psol_i[...], is_full=True)

        pp.apply_ebc_to_matrix(mtx_if, self.ebc_rows)
        pp.assemble_mtx_to_petsc(
            pmtx, mtx_if, self.pdofs, self.drange, self.is_overlap, self.comm, verbose=self.verbose
        )
示例#7
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    def test_boundary_fluxes( self ):
        from sfepy.discrete.evaluate import BasicEvaluator
        from sfepy.discrete import Material
        problem = self.problem

        region_names = ['Gamma']

        variables = problem.get_variables()
        get_state = variables.get_state_part_view
        state = self.state.copy(deep=True)

        problem.time_update(ebcs={}, epbcs={})
        ## problem.save_ebc( 'aux.vtk' )

        state.apply_ebc()
        ev = BasicEvaluator( problem )
        aux = ev.eval_residual(state())

        field = variables['t'].field

        conf_m = problem.conf.get_item_by_name('materials', 'm')
        m = Material.from_conf(conf_m, problem.functions)

        ok = True
        for ii, region_name in enumerate( region_names ):
            flux_term = 'd_surface_flux.1.%s( m.K, t )' % region_name
            val1 = problem.evaluate(flux_term, t=variables['t'], m=m)

            rvec = get_state( aux, 't', True )
            reg = problem.domain.regions[region_name]
            nods = field.get_dofs_in_region(reg, merge=True)
            val2 = rvec[nods].sum() # Assume 1 dof per node.

            eps = 1e-2
            ok = ok and ((abs( val1 - val2 ) < eps))
            self.report( '%d. %s: |%e - %e| = %e < %.2e'\
                         % (ii, region_name, val1, val2, abs( val1 - val2 ),
                            eps) )

        return ok
示例#8
0
    def test_boundary_fluxes(self):
        from sfepy.discrete.evaluate import BasicEvaluator
        from sfepy.discrete import Material
        problem = self.problem

        region_names = ['Gamma']

        variables = problem.get_variables()
        get_state = variables.get_state_part_view
        state = self.state.copy(deep=True)

        problem.time_update(ebcs={}, epbcs={})
        ## problem.save_ebc( 'aux.vtk' )

        state.apply_ebc()
        ev = BasicEvaluator(problem)
        aux = ev.eval_residual(state())

        field = variables['t'].field

        conf_m = problem.conf.get_item_by_name('materials', 'm')
        m = Material.from_conf(conf_m, problem.functions)

        ok = True
        for ii, region_name in enumerate(region_names):
            flux_term = 'd_surface_flux.1.%s( m.K, t )' % region_name
            val1 = problem.evaluate(flux_term, t=variables['t'], m=m)

            rvec = get_state(aux, 't', True)
            reg = problem.domain.regions[region_name]
            nods = field.get_dofs_in_region(reg, merge=True)
            val2 = rvec[nods].sum()  # Assume 1 dof per node.

            eps = 1e-2
            ok = ok and ((abs(val1 - val2) < eps))
            self.report( '%d. %s: |%e - %e| = %e < %.2e'\
                         % (ii, region_name, val1, val2, abs( val1 - val2 ),
                            eps) )

        return ok
示例#9
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文件: evaluate.py 项目: adeyu/sfepy
    def eval_tangent_matrix(self, snes, psol, pmtx, ppmtx):
        self.scatter(self.psol_i, psol)

        mtx_if = BasicEvaluator.eval_tangent_matrix(self,
                                                    self.psol_i[...],
                                                    is_full=True)
        pp.assemble_mtx_to_petsc(pmtx,
                                 mtx_if,
                                 self.pdofs,
                                 self.drange,
                                 self.is_overlap,
                                 self.comm,
                                 verbose=self.verbose)
示例#10
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文件: evaluate.py 项目: adeyu/sfepy
    def eval_residual(self, snes, psol, prhs):
        self.scatter(self.psol_i, psol)

        rhs_if = BasicEvaluator.eval_residual(self,
                                              self.psol_i[...],
                                              is_full=True)

        pp.assemble_rhs_to_petsc(prhs,
                                 rhs_if,
                                 self.pdofs,
                                 self.drange,
                                 self.is_overlap,
                                 self.comm,
                                 verbose=self.verbose)
示例#11
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文件: evaluate.py 项目: adeyu/sfepy
    def __init__(self,
                 problem,
                 pdofs,
                 drange,
                 is_overlap,
                 psol,
                 comm,
                 matrix_hook=None,
                 verbose=False):
        BasicEvaluator.__init__(self, problem, matrix_hook=matrix_hook)
        Struct.__init__(self,
                        pdofs=pdofs,
                        drange=drange,
                        is_overlap=is_overlap,
                        comm=comm,
                        verbose=verbose)

        self.psol_i = pp.create_local_petsc_vector(pdofs)

        self.gather, self.scatter = pp.create_gather_scatter(pdofs,
                                                             self.psol_i,
                                                             psol,
                                                             comm=comm)
示例#12
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    def get_evaluator(self, reuse=False):
        """
        Either create a new Evaluator instance (reuse == False),
        or return an existing instance, created in a preceding call to
        Problem.init_solvers().
        """
        if reuse:
            try:
                ev = self.evaluator
            except AttributeError:
                raise AttributeError('call Problem.init_solvers() or'\
                                     ' set reuse to False!')
        else:
            if self.equations.variables.has_lcbc:
                ev = LCBCEvaluator(self, matrix_hook=self.matrix_hook)
            else:
                ev = BasicEvaluator(self, matrix_hook=self.matrix_hook)

        self.evaluator = ev

        return ev
示例#13
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文件: shaper.py 项目: uberstig/sfepy
def solve_navier_stokes(conf, options):
    opts = conf.options

    dpb = Problem.from_conf(conf, init_equations=False)
    equations = getattr(conf, '_'.join(('equations_direct', opts.problem)))
    dpb.set_equations(equations)

    ls_conf = dpb.get_solver_conf(opts.ls)
    nls_conf = dpb.get_solver_conf(opts.nls_direct)

    method = opts.direct_method
    if method == 'stationary':
        data = {}
        dpb.time_update(None)
        state_dp = dpb.solve(nls_conf=nls_conf)

    elif method == 'transient':
        ls = Solver.any_from_conf(ls_conf)
        ts_conf = dpb.get_solver_conf(opts.ts_direct)

        data = {'ts': Struct(dt=ts_conf.dt)}

        # Plug in mass term.
        mequations = {}
        for key, eq in equations.iteritems():
            if 'dw_div_grad' in eq:
                eq = '+'.join((ts_conf.mass_term, eq)).replace('++', '+')
            mequations[key] = eq

        if ts_conf.stokes_init:
            state_dp0 = solve_stokes(dpb, conf.equations_direct_stokes,
                                     nls_conf)
            dpb.set_equations(mequations)
        else:
            dpb.set_equations(mequations)
            state_dp0 = dpb.create_state()
            dpb.time_update(None)
            state_dp0.apply_ebc()

        from sfepy.base.log import Log

        log = Log.from_conf(Struct(is_plot=True), ([r'$||u||$'], [r'$||p||$']))

        output('Navier-Stokes...')
        ev = BasicEvaluator(dpb, ts=Struct(dt=ts_conf.dt))
        nls = Solver.any_from_conf(nls_conf, evaluator=ev, lin_solver=ls)

        n_step = ts_conf.n_step
        step = 0
        while 1:
            for ii in xrange(n_step):
                output(step)

                vec_u = state_dp0('w')
                vec_p = state_dp0('r')
                log(nm.linalg.norm(vec_u), nm.linalg.norm(vec_p))

                dpb.variables.set_data_from_state('w_0', state_dp0(), 'w')
                vec_dp = nls(state_dp0())

                step += 1
                state_dp = state_dp0.copy()
                state_dp.set_reduced(vec_dp)

                state_dp0 = state_dp

            if ts_conf.interactive:
                try:
                    n_step = int(raw_input('continue: '))
                    if n_step <= 0: break
                except:
                    break

        vec_u = state_dp('w')
        vec_p = state_dp('r')
        log(nm.linalg.norm(vec_u), nm.linalg.norm(vec_p), finished=True)

    else:
        raise 'unknown Navier-Stokes solution method (%s)!' % method

    return dpb, state_dp, data