aerodynamics_newtonian Class Reference

Generates a Newtonian flow aerodynamic model using triangles. More...

#include <aerodynamics_newtonian.h>

Inherits dsim_model.

Public Member Functions
	aerodynamics_newtonian (dsim_model_setup *setup)
	Constructor.
	~aerodynamics_newtonian ()
	Destructor.
void	initialize_data ()
	Create output variables and setup outlets.
void	initialization_complete ()
	Finish initialization.
void	initialize_timestep ()
	Pre numerical integration computation.
void	rhs (double t, double jd)
	Computation done during the right hand side.
void	complete_timestep ()
	Post numerical integration computation. More...
double	rankine_hugoniot_factor (double gamma, double m, double p_inf)
	Pressure correction. More...

Protected Attributes
dsim_variable	force_dsim
	The aerodynamic force.
dsim_variable	torque_dsim
	The aerodynamic torque.
dsim_variable	rho_dsim
	The atmospheric density used in the calculation.
dsim_variable	t_stagnation_dsim
	The stagnation temperature.
dsim_variable	solarFluxFile_dsim
	Solar flux data file.
dsim_variable	surface_area_dsim
	Surface area.
dsim_variable	rotation_axis_dsim
	Rotation axis.
dsim_variable	normal_dsim
	Normals.
dsim_variable	centroid_dsim
	Centroids.
dsim_variable	rotation_angle_dsim
	Rotation angles.
dsim_variable	parent_position_dsim
	Parent position.
dsim_variable	parent_velocity_dsim
	Parent velocity.
dsim_variable	parent_center_of_mass_dsim
	Parent center of mass.
dsim_variable	parent_quaternion_dsim
	Parent quaternion.

Detailed Description

Generates a Newtonian flow aerodynamic model using triangles.

The inputs to this model are a file with vertices and faces. The vertex array is nx3. The face array is mx3. The outward normals are computed using the right-hand-rule based on the face array. The drag coefficients are stored with the face data in the file. The vehicle center-of-mass is a separate input.

The Newtonian model is only applicable above Mach 4. It does not meld smoothly with the continuum model. It includes the Rankine-Hugoniot pressure effects. These add a Mach number effect to the model.

Loads the fixed file /Library/Application Support/VisualCommander/Model Libraries/SolarFluxPredictions.txt

Member Function Documentation

complete_timestep()

void aerodynamics_newtonian::complete_timestep

(

)

Post numerical integration computation.

Store values of force and torque at end of timestep.

rankine_hugoniot_factor()

double aerodynamics_newtonian::rankine_hugoniot_factor	(	double	gamma,
		double	m,
		double	p_inf
	)

Pressure correction.

Correction for newtonian flow.

Parameters

gamma	Ratio of specific heats
m	Mach number
p_inf	Pressure at infinity

Returns

Maximum pressure coefficient

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

• aerodynamics_newtonian.h
• aerodynamics_newtonian.cc