#include <averaged_fan_base.h>

Inheritance diagram for GRINS::AveragedFanBase< Viscosity >:

Collaboration diagram for GRINS::AveragedFanBase< Viscosity >:

Public Member Functions
	AveragedFanBase (const std::string &physics_name, const GetPot &input)

	~AveragedFanBase ()

bool	compute_force (const libMesh::Point &point, const libMesh::Real time, const libMesh::NumberVectorValue &U, libMesh::NumberVectorValue &F, libMesh::NumberTensorValue *dFdU=NULL)

Public Member Functions inherited from GRINS::IncompressibleNavierStokesBase< Viscosity >
	IncompressibleNavierStokesBase (const std::string &my_physics_name, const std::string &core_physics_name, const GetPot &input)

	~IncompressibleNavierStokesBase ()

virtual void	set_time_evolving_vars (libMesh::FEMSystem *system)
	Sets velocity variables to be time-evolving. More...

virtual void	init_context (AssemblyContext &context)
	Initialize context for added physics variables. More...

virtual void	register_parameter (const std::string &param_name, libMesh::ParameterMultiAccessor< libMesh::Number > &param_pointer) const
	Each subclass will register its copy of an independent. More...

libMesh::Real	get_viscosity_value (AssemblyContext &context, unsigned int qp) const

Public Member Functions inherited from GRINS::Physics
	Physics (const GRINS::PhysicsName &physics_name, const GetPot &input)

virtual	~Physics ()

virtual void	init_variables (libMesh::FEMSystem *)
	Initialize variables for this physics. More...

virtual bool	enabled_on_elem (const libMesh::Elem *elem)
	Find if current physics is active on supplied element. More...

void	set_is_steady (bool is_steady)
	Sets whether this physics is to be solved with a steady solver or not. More...

bool	is_steady () const
	Returns whether or not this physics is being solved with a steady solver. More...

virtual void	auxiliary_init (MultiphysicsSystem &system)
	Any auxillary initialization a Physics class may need. More...

virtual void	register_postprocessing_vars (const GetPot &input, PostProcessedQuantities< libMesh::Real > &postprocessing)
	Register name of postprocessed quantity with PostProcessedQuantities. More...

virtual void	preassembly (MultiphysicsSystem &)
	Perform any necessary setup before element assembly begins. More...

virtual void	reinit (MultiphysicsSystem &)
	Any reinitialization that needs to be done. More...

virtual void	element_time_derivative (bool, AssemblyContext &)
	Time dependent part(s) of physics for element interiors. More...

virtual void	side_time_derivative (bool, AssemblyContext &)
	Time dependent part(s) of physics for boundaries of elements on the domain boundary. More...

virtual void	nonlocal_time_derivative (bool, AssemblyContext &)
	Time dependent part(s) of physics for scalar variables. More...

virtual void	element_constraint (bool, AssemblyContext &)
	Constraint part(s) of physics for element interiors. More...

virtual void	side_constraint (bool, AssemblyContext &)
	Constraint part(s) of physics for boundaries of elements on the domain boundary. More...

virtual void	nonlocal_constraint (bool, AssemblyContext &)
	Constraint part(s) of physics for scalar variables. More...

virtual void	damping_residual (bool, AssemblyContext &)
	Damping matrix part(s) for element interiors. All boundary terms lie within the time_derivative part. More...

virtual void	mass_residual (bool, AssemblyContext &)
	Mass matrix part(s) for element interiors. All boundary terms lie within the time_derivative part. More...

virtual void	nonlocal_mass_residual (bool, AssemblyContext &)
	Mass matrix part(s) for scalar variables. More...

void	init_ics (libMesh::FEMSystem *system, libMesh::CompositeFunction< libMesh::Number > &all_ics)

virtual void	compute_element_time_derivative_cache (AssemblyContext &)

virtual void	compute_side_time_derivative_cache (AssemblyContext &)

virtual void	compute_nonlocal_time_derivative_cache (AssemblyContext &)

virtual void	compute_element_constraint_cache (AssemblyContext &)

virtual void	compute_side_constraint_cache (AssemblyContext &)

virtual void	compute_nonlocal_constraint_cache (AssemblyContext &)

virtual void	compute_damping_residual_cache (AssemblyContext &)

virtual void	compute_mass_residual_cache (AssemblyContext &)

virtual void	compute_nonlocal_mass_residual_cache (AssemblyContext &)

virtual void	compute_postprocessed_quantity (unsigned int quantity_index, const AssemblyContext &context, const libMesh::Point &point, libMesh::Real &value)

ICHandlingBase *	get_ic_handler ()

Public Member Functions inherited from GRINS::ParameterUser
	ParameterUser (const std::string &user_name)

virtual	~ParameterUser ()

virtual void	set_parameter (libMesh::Number &param_variable, const GetPot &input, const std::string &param_name, libMesh::Number param_default)
	Each subclass can simultaneously read a parameter value from. More...

virtual void	set_parameter (libMesh::ParsedFunction< libMesh::Number, libMesh::Gradient > &func, const GetPot &input, const std::string &func_param_name, const std::string &param_default)
	Each subclass can simultaneously read a parsed function from. More...

virtual void	set_parameter (libMesh::ParsedFEMFunction< libMesh::Number > &func, const GetPot &input, const std::string &func_param_name, const std::string &param_default)
	Each subclass can simultaneously read a parsed function from. More...

virtual void	move_parameter (const libMesh::Number &old_parameter, libMesh::Number &new_parameter)
	When cloning an object, we need to update parameter pointers. More...

virtual void	move_parameter (const libMesh::ParsedFunction< libMesh::Number, libMesh::Gradient > &old_func, libMesh::ParsedFunction< libMesh::Number, libMesh::Gradient > &new_func)
	When cloning an object, we need to update parameter pointers. More...

virtual void	move_parameter (const libMesh::ParsedFEMFunction< libMesh::Number > &old_func, libMesh::ParsedFEMFunction< libMesh::Number > &new_func)
	When cloning an object, we need to update parameter pointers. More...

Protected Attributes
libMesh::ParsedFunction< libMesh::Number >	base_velocity_function

libMesh::ParsedFunction< libMesh::Number >	local_vertical_function

libMesh::ParsedFunction< libMesh::Number >	lift_function

libMesh::ParsedFunction< libMesh::Number >	drag_function

libMesh::ParsedFunction< libMesh::Number >	chord_function

libMesh::ParsedFunction< libMesh::Number >	area_swept_function

libMesh::ParsedFunction< libMesh::Number >	aoa_function

Protected Attributes inherited from GRINS::IncompressibleNavierStokesBase< Viscosity >
VelocityVariable &	_flow_vars

PressureFEVariable &	_press_var

libMesh::Number	_rho
	Material parameters, read from input. More...

Viscosity	_mu
	Viscosity object. More...

Protected Attributes inherited from GRINS::Physics
const PhysicsName	_physics_name
	Name of the physics object. Used for reading physics specific inputs. More...

GRINS::ICHandlingBase *	_ic_handler

std::set< libMesh::subdomain_id_type >	_enabled_subdomains
	Subdomains on which the current Physics class is enabled. More...

Private Member Functions
void	read_input_options (const GetPot &input)
	Read options from GetPot input file. More...

	AveragedFanBase ()

Additional Inherited Members
Static Public Member Functions inherited from GRINS::Physics
static void	set_is_axisymmetric (bool is_axisymmetric)
	Set whether we should treat the problem as axisymmetric. More...

static bool	is_axisymmetric ()

Static Public Attributes inherited from GRINS::ParameterUser
static std::string	zero_vector_function = std::string("{0}")
	A parseable function string with LIBMESH_DIM components, all 0. More...

Protected Member Functions inherited from GRINS::Physics
libMesh::UniquePtr< libMesh::FEGenericBase< libMesh::Real > >	build_new_fe (const libMesh::Elem elem, const libMesh::FEGenericBase< libMesh::Real > fe, const libMesh::Point p)

void	parse_enabled_subdomains (const GetPot &input, const std::string &physics_name)

void	check_var_subdomain_consistency (const FEVariablesBase &var) const
	Check that var is enabled on at least the subdomains this Physics is. More...

Static Protected Attributes inherited from GRINS::Physics
static bool	_is_steady = false
	Caches whether or not the solver that's being used is steady or not. More...

static bool	_is_axisymmetric = false
	Caches whether we are solving an axisymmetric problem or not. More...

Detailed Description

template<class Viscosity>
class GRINS::AveragedFanBase< Viscosity >

Definition at line 45 of file averaged_fan_base.h.

Constructor & Destructor Documentation

template<class Mu >

GRINS::AveragedFanBase< Mu >::AveragedFanBase	(	const std::string &	physics_name,
		const GetPot &	input
	)

Definition at line 38 of file averaged_fan_base.C.

References GRINS::AveragedFanBase< Viscosity >::read_input_options().

     : IncompressibleNavierStokesBase<Mu>(physics_name,
                                          PhysicsNaming::incompressible_navier_stokes(), /* "core" Physics name */
                                          input),
     base_velocity_function(""),
     local_vertical_function(""),
     lift_function(""),
     drag_function(""),
     chord_function(""),
     area_swept_function(""),
     aoa_function("")
   {
     this->read_input_options(input);
   }

template<class Viscosity >

GRINS::AveragedFanBase< Viscosity >::~AveragedFanBase ( )

inline

Definition at line 51 of file averaged_fan_base.h.

51 {};

template<class Viscosity >

GRINS::AveragedFanBase< Viscosity >::AveragedFanBase ( )

private

Member Function Documentation

template<class Mu >

bool GRINS::AveragedFanBase< Mu >::compute_force	(	const libMesh::Point &	point,
		const libMesh::Real	time,
		const libMesh::NumberVectorValue &	U,
		libMesh::NumberVectorValue &	F,
		libMesh::NumberTensorValue *	dFdU = `NULL`
	)

Definition at line 113 of file averaged_fan_base.C.

   {
     // Find base velocity of moving fan at this point
     libMesh::DenseVector<libMesh::Number> output_vec(3);
 
     base_velocity_function(point, time,
                            output_vec);
 
     const libMesh::NumberVectorValue U_B(output_vec(0),
                                          output_vec(1),
                                          output_vec(2));
 
     const libMesh::Number U_B_size = U_B.norm();
 
     // If there's no base velocity there's no fan
     if (!U_B_size)
       return false;
 
     // Normal in fan velocity direction
     const libMesh::NumberVectorValue N_B =
       libMesh::NumberVectorValue(U_B/U_B_size);
 
     local_vertical_function(point, time,
                             output_vec);
 
     // Normal in fan vertical direction
     const libMesh::NumberVectorValue N_V(output_vec(0),
                                          output_vec(1),
                                          output_vec(2));
 
     // Normal in radial direction (or opposite radial direction,
     // for fans turning clockwise!)
     const libMesh::NumberVectorValue N_R = N_B.cross(N_V);
 
     // Fan-wing-plane component of local relative velocity
     const libMesh::NumberVectorValue U_P = U - (U*N_R)*N_R - U_B;
 
     const libMesh::Number U_P_size = U_P.norm();
 
     // If there's no flow in the fan's frame of reference, there's no
     // lift or drag.  FIXME - should we account for drag in the
     // out-of-plane direction?
     if (!U_P_size)
       return false;
 
     // Direction opposing drag
     const libMesh::NumberVectorValue N_drag =
       libMesh::NumberVectorValue(-U_P/U_P_size);
 
     // Direction opposing lift
     const libMesh::NumberVectorValue N_lift = N_drag.cross(N_R);
 
     // "Forward" velocity
     const libMesh::Number u_fwd = -(U_P * N_B);
 
     // "Upward" velocity
     const libMesh::Number u_up = U_P * N_V;
 
     // If there's no forward or upward velocity we should have already
     // returned false
     libmesh_assert (u_up || u_fwd);
 
     // Angle WRT fan velocity direction
     const libMesh::Number part_angle = std::atan2(u_up, u_fwd);
 
     // Angle WRT fan chord
     const libMesh::Number angle = part_angle +
       aoa_function(point, time);
 
     const libMesh::Number C_lift  = lift_function(point, angle);
     const libMesh::Number C_drag  = drag_function(point, angle);
 
     const libMesh::Number chord = chord_function(point, time);
     const libMesh::Number area  = area_swept_function(point, time);
 
     const libMesh::Number v_sq = U_P*U_P;
 
     const libMesh::Number LDfactor = 0.5 * this->_rho * v_sq * chord / area;
     const libMesh::Number lift = C_lift * LDfactor;
     const libMesh::Number drag = C_drag * LDfactor;
 
     // Force
     F = lift * N_lift + drag * N_drag;
 
     if (dFdU)
       {
         // FIXME: Jacobians here are very inexact!
         // Dropping all AoA dependence on U terms!
         const libMesh::NumberVectorValue LDderivfactor =
           (N_lift*C_lift+N_drag*C_drag) *
           this->_rho * chord / area;
 
         for (unsigned int i=0; i != 3; ++i)
           for (unsigned int j=0; j != 3; ++j)
             (*dFdU)(i,j) = LDderivfactor(i) * U_P(j);
       }
 
     return true;
   }

template<class Mu >

void GRINS::AveragedFanBase< Mu >::read_input_options ( const GetPot & input )

private

Read options from GetPot input file.

Definition at line 54 of file averaged_fan_base.C.

References GRINS::PhysicsNaming::averaged_fan().

Referenced by GRINS::AveragedFanBase< Viscosity >::AveragedFanBase().

   {
     this->set_parameter(base_velocity_function, input,
                         "Physics/"+PhysicsNaming::averaged_fan()+"/base_velocity",
                         this->zero_vector_function);
 
     if (base_velocity_function.expression() == this->zero_vector_function)
       libmesh_error_msg("Error! Zero AveragedFan specified!" <<
                         std::endl);
 
     this->set_parameter(local_vertical_function, input,
                         "Physics/"+PhysicsNaming::averaged_fan()+"/local_vertical",
                         this->zero_vector_function);
 
     if (local_vertical_function.expression() == this->zero_vector_function)
       libmesh_error_msg("Error! Zero LocalVertical specified!" <<
                         std::endl);
 
     this->set_parameter(lift_function, input,
                         "Physics/"+PhysicsNaming::averaged_fan()+"/lift",
                         "0");
 
     if (lift_function.expression() == "0")
       std::cout << "Warning! Zero lift function specified!" << std::endl;
 
     this->set_parameter(drag_function, input,
                         "Physics/"+PhysicsNaming::averaged_fan()+"/drag",
                         "0");
 
     if (drag_function.expression() == "0")
       std::cout << "Warning! Zero drag function specified!" << std::endl;
 
     this->set_parameter(chord_function, input,
                         "Physics/"+PhysicsNaming::averaged_fan()+"/chord_length",
                         "0");
 
     if (chord_function.expression() == "0")
       libmesh_error_msg("Error! Zero chord function specified!" <<
                         std::endl);
 
     this->set_parameter(area_swept_function, input,
                         "Physics/"+PhysicsNaming::averaged_fan()+"/area_swept",
                         "0");
 
     if (area_swept_function.expression() == "0")
       libmesh_error_msg("Error! Zero area_swept_function specified!" <<
                         std::endl);
 
     this->set_parameter(aoa_function, input,
                         "Physics/"+PhysicsNaming::averaged_fan()+"/angle_of_attack",
                         "00000");
 
     if (aoa_function.expression() == "00000")
       libmesh_error_msg("Error! No angle-of-attack specified!" <<
                         std::endl);
   }

Member Data Documentation

template<class Viscosity >

libMesh::ParsedFunction<libMesh::Number> GRINS::AveragedFanBase< Viscosity >::aoa_function

protected

Definition at line 90 of file averaged_fan_base.h.

template<class Viscosity >

libMesh::ParsedFunction<libMesh::Number> GRINS::AveragedFanBase< Viscosity >::area_swept_function

protected

Definition at line 85 of file averaged_fan_base.h.

template<class Viscosity >

libMesh::ParsedFunction<libMesh::Number> GRINS::AveragedFanBase< Viscosity >::base_velocity_function

protected

Definition at line 64 of file averaged_fan_base.h.

template<class Viscosity >

libMesh::ParsedFunction<libMesh::Number> GRINS::AveragedFanBase< Viscosity >::chord_function

protected

Definition at line 80 of file averaged_fan_base.h.

template<class Viscosity >

libMesh::ParsedFunction<libMesh::Number> GRINS::AveragedFanBase< Viscosity >::drag_function

protected

Definition at line 76 of file averaged_fan_base.h.

template<class Viscosity >

libMesh::ParsedFunction<libMesh::Number> GRINS::AveragedFanBase< Viscosity >::lift_function

protected

Definition at line 75 of file averaged_fan_base.h.

template<class Viscosity >

libMesh::ParsedFunction<libMesh::Number> GRINS::AveragedFanBase< Viscosity >::local_vertical_function

protected

Definition at line 68 of file averaged_fan_base.h.

The documentation for this class was generated from the following files:

src/physics/include/grins/averaged_fan_base.h
src/physics/src/averaged_fan_base.C

Public Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

template<class Viscosity> class GRINS::AveragedFanBase< Viscosity >

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<class Viscosity>
class GRINS::AveragedFanBase< Viscosity >