Contains information about bodies in the flow. More...

#include <bodies.h>

Public Member Functions
void	initialise (parameterDB &db, domain &D)
	Sets initial position and velocity of each body. More...

void	calculateCellIndices (domain &D)
	Stores index of each cell that contains a boundary point. More...

void	calculateBoundingBoxes (parameterDB &db, domain &D)
	Calculates indices of the bounding box of each body in the flow. More...

void	update (parameterDB &db, domain &D, real Time)
	Updates position, velocity and neighbors of each body. More...

void	writeToFile (std::string &caseFolder, int timeStep)

void	writeToFile (real bx, real by, std::string &caseFolder, int timeStep)
	Writes body coordinates into a file called bodies. More...

template<>
void	writeToFile (std::string &caseFolder, int timeStep)
	Writes body coordinates into a file (using data from the device). More...

Public Attributes
int	numBodies
	number of bodies More...

int	totalPoints
	total number of boundary points (all bodies) More...

bool	bodiesMove
	tells whether the body is moving or not More...

cusp::array1d< int, memoryType >	numPoints
	number of points for each body More...

cusp::array1d< int, memoryType >	offsets
	array index of the first point of each body More...

cusp::array1d< int, memoryType >	I
	x-index of the cell in which a body point is located More...

cusp::array1d< int, memoryType >	J
	y-index of the cell in which a body point is located More...

cusp::array1d< int, memoryType >	startI
	starting cell index of the bounding box of a body More...

cusp::array1d< int, memoryType >	startJ
	starting cell index of the bounding box of a body More...

cusp::array1d< int, memoryType >	numCellsX
	number of cells in the x-direction in the bounding box of a body More...

cusp::array1d< int, memoryType >	numCellsY
	number of cells in the y-direction in the bounding box of a body More...

cusp::array1d< real, memoryType >	xmin
	lowest x-coordinate for the bounding box of a body More...

cusp::array1d< real, memoryType >	xmax
	highest x-coordinate for the bounding box of a body More...

cusp::array1d< real, memoryType >	ymin
	lowest y-coordinate for the bounding box of a body More...

cusp::array1d< real, memoryType >	ymax
	highest y-coordinate for the bounding box of a body More...

cusp::array1d< real, memoryType >	forceX
	force acting on a body in the x-direction More...

cusp::array1d< real, memoryType >	forceY
	force acting on a body in the y-direction More...

cusp::array1d< real, memoryType >	X
	reference x-coordinates of the boundary points More...

cusp::array1d< real, memoryType >	Y
	reference y-coordinates of the boundary points More...

cusp::array1d< real, memoryType >	ds
	vector containing the lengths of all the boundary segments More...

cusp::array1d< real, memoryType >	ones
	vector of size totalPoints with all elements 1 More...

cusp::array1d< real, memoryType >	x
	actual x-coordinate of the boundary points More...

cusp::array1d< real, memoryType >	y
	actual y-coordinate of the boundary points More...

cusp::array1d< real, memoryType >	uB
	x-velocity of the boundary points More...

cusp::array1d< real, memoryType >	vB
	y-velocity of the boundary points More...

Detailed Description

template<typename memoryType>
class bodies< memoryType >

Contains information about bodies in the flow.

Definition at line 19 of file bodies.h.

Member Function Documentation

template<typename memoryType >

void bodies< memoryType >::calculateBoundingBoxes	(	parameterDB &	db,
		domain &	D
	)

Calculates indices of the bounding box of each body in the flow.

First the bounding box is scaled by a coefficient stored in the database. Then, indices of the x-coordinate and y-coordinate of the bottom left cell of the bounding box are stored. Finally, the number of cells in the x- and y- directions are calculated.

Parameters

db	database that contains all the simulation parameters
D	information about the computational grid

Definition at line 164 of file bodies.cu.

References domain::x, and domain::y.

template<typename memoryType >

void bodies< memoryType >::calculateCellIndices ( domain & D )

Stores index of each cell that contains a boundary point.

It calculates the index of the x-coordinate and the index of the y-coordinate of the bottom-left node of each cell that contains a boundary point. This information is useful when transferring data between the boundary points and the computational grid.

Parameters

D	information about the computational grid

Definition at line 108 of file bodies.cu.

References domain::x, and domain::y.

template<typename memoryType >

void bodies< memoryType >::initialise	(	parameterDB &	db,
		domain &	D
	)

Sets initial position and velocity of each body.

Parameters

db	database that contains all the simulation parameters
D	information about the computational grid

Definition at line 17 of file bodies.cu.

References kernels::forceX(), and kernels::forceY().

template<typename memoryType >

void bodies< memoryType >::update	(	parameterDB &	db,
		domain &	D,
		real	Time
	)

Updates position, velocity and neighbors of each body.

This is done using the formulae:

$x_{i,m} = X^c_m + (X_{i,m} - X^0_m) \cos\theta - (Y_{i,m} - Y^0_m) \sin\theta$

and

$y_{i,m} = Y^c_m + (X_{i,m} - X^0_m) \sin\theta + (Y_{i,m} - Y^0_m) \cos\theta$

Parameters

db	database that contains all the simulation parameters
D	information about the computational grid
Time	the time

Definition at line 223 of file bodies.cu.

template<typename memoryType>

void bodies< memoryType >::writeToFile	(	std::string &	caseFolder,
		int	timeStep
	)

template<typename memoryType >

void bodies< memoryType >::writeToFile	(	real *	bx,
		real *	by,
		std::string &	caseFolder,
		int	timeStep
	)

Writes body coordinates into a file called bodies.

Parameters

bx	x-coordinate of all points of all bodies
by	y-coordinate of all points of all bodies
caseFolder	directory of the simulation
timeStep	time-step of the simulation

Definition at line 308 of file bodies.cu.

template<>

void bodies< device_memory >::writeToFile	(	std::string &	caseFolder,
		int	timeStep
	)

Writes body coordinates into a file (using data from the device).

Parameters

caseFolder	directory of the simulation
timeStep	time-step of the simulation

Definition at line 289 of file bodies.cu.

Member Data Documentation

template<typename memoryType>

bool bodies< memoryType >::bodiesMove

tells whether the body is moving or not

Definition at line 25 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::ds

vector containing the lengths of all the boundary segments

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::forceX

force acting on a body in the x-direction

Definition at line 46 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::forceY

force acting on a body in the y-direction

Definition at line 46 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::I

x-index of the cell in which a body point is located

Definition at line 28 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::J

y-index of the cell in which a body point is located

Definition at line 28 of file bodies.h.

template<typename memoryType>

int bodies< memoryType >::numBodies

number of bodies

Definition at line 22 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::numCellsX

number of cells in the x-direction in the bounding box of a body

Definition at line 34 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::numCellsY

number of cells in the y-direction in the bounding box of a body

Definition at line 34 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::numPoints

number of points for each body

Definition at line 28 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::offsets

array index of the first point of each body

Definition at line 28 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::ones

vector of size totalPoints with all elements 1

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::startI

starting cell index of the bounding box of a body

Definition at line 34 of file bodies.h.

template<typename memoryType>

cusp::array1d<int, memoryType> bodies< memoryType >::startJ

starting cell index of the bounding box of a body

Definition at line 34 of file bodies.h.

template<typename memoryType>

int bodies< memoryType >::totalPoints

total number of boundary points (all bodies)

Definition at line 22 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::uB

x-velocity of the boundary points

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::vB

y-velocity of the boundary points

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::X

reference x-coordinates of the boundary points

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::x

actual x-coordinate of the boundary points

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::xmax

highest x-coordinate for the bounding box of a body

Definition at line 40 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::xmin

lowest x-coordinate for the bounding box of a body

Definition at line 40 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::Y

reference y-coordinates of the boundary points

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::y

actual y-coordinate of the boundary points

Definition at line 50 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::ymax

highest y-coordinate for the bounding box of a body

Definition at line 40 of file bodies.h.

template<typename memoryType>

cusp::array1d<real, memoryType> bodies< memoryType >::ymin

lowest y-coordinate for the bounding box of a body

Definition at line 40 of file bodies.h.

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

/home/mesnardo/git/barbagroup/cuIBM/src/utilities/bodies.h
/home/mesnardo/git/barbagroup/cuIBM/src/utilities/bodies.cu

Public Member Functions

Public Attributes

Detailed Description

template<typename memoryType> class bodies< memoryType >

Member Function Documentation

Member Data Documentation

template<typename memoryType>
class bodies< memoryType >