Boundary_Items Namespace Reference

Functions
void	get_exact_u_b1 (double &time, const Vector< double > &x, double &u)
void	boundary_velocity (double &time, const Vector< double > &x, double &u)
void	boundary_velocity (const double &time, const Vector< double > &x, double &u)

Function Documentation

boundary_velocity() [1/2]

void Boundary_Items::boundary_velocity	(	const double &	time,
		const Vector< double > &	x,
		double &	u
	)

 {        
  // u assignment - spin-up problem
  u = x[0]*(1.0 - std::exp(-100*time));
 }

References Eigen::bfloat16_impl::exp(), and plotDoE::x.

boundary_velocity() [2/2]

void Boundary_Items::boundary_velocity	(	double &	time,
		const Vector< double > &	x,
		double &	u
	)

 {        
  //Spin-up with a "fast" exponential forcing
  u = x[0]*sin(x[1])*(1.0 - std::exp(-100*time));
 }

References Eigen::bfloat16_impl::exp(), sin(), and plotDoE::x.

Referenced by SphericalSpinUpProblem< ELEMENT >::actions_before_implicit_timestep(), and SphericalSpinUpProblem< ELEMENT >::set_boundary_conditions().

get_exact_u_b1()

void Boundary_Items::get_exact_u_b1	(	double &	time,
		const Vector< double > &	x,
		double &	u
	)

 {        
  // u assignment - spin-up problem
  u = x[0]*sin(x[1])*(1.0 - std::exp(-time));
  
  // u assignment - DSDJ problem
  //u = x[0]*sin(time)*sin(x[1]);
 }

References Eigen::bfloat16_impl::exp(), sin(), and plotDoE::x.

Referenced by RefineableSphericalSpinUpProblem< ELEMENT >::set_boundary_conditions().