chrono::fsi::ChFsiForce Class Reference

Description

Base class to calculate force between SPH particles.

This is an abstract class that defines an interface that various SPH methods should implement. The class owns a collision system fsi which takes care of GPU based proximity computation of the particles. It also holds a pointer to external data of SPH particles, proximity data, parameters, and numbers.

Inheritance diagram for chrono::fsi::ChFsiForce:

Collaboration diagram for chrono::fsi::ChFsiForce:

Public Member Functions
	ChFsiForce (std::shared_ptr< ChBce > otherBceWorker, std::shared_ptr< SphMarkerDataD > otherSortedSphMarkersD, std::shared_ptr< ProximityDataD > otherMarkersProximityD, std::shared_ptr< FsiData > otherFsiData, std::shared_ptr< SimParams > params, std::shared_ptr< ChCounters > numObjects, bool verb)
	Base constructor for the ChFsiForce class. More...
virtual	~ChFsiForce ()
	Destructor of the ChFsiForce.
virtual void	ForceSPH (std::shared_ptr< SphMarkerDataD > otherSortedSphMarkersD, std::shared_ptr< FsiBodyStateD > fsiBodyStateD, std::shared_ptr< FsiMeshStateD > fsiMesh1DStateD, std::shared_ptr< FsiMeshStateD > fsiMesh2DStateD, Real time, bool firstHalfStep)=0
	Function to calculate forces on SPH particles. More...
virtual void	Initialize ()
	Synchronize the copy of the data (parameters and number of objects) between device (GPU) and host (CPU). More...
void	SetLinearSolver (SolverType type)
	Function to set the linear solver type for the solver implemented using the ISPH method (ChFsiForceI2SPH).
Public Member Functions inherited from chrono::fsi::ChFsiBase
	ChFsiBase (std::shared_ptr< SimParams > params, std::shared_ptr< ChCounters > numObjects)
	Constructor for the ChFsiBase class. More...
virtual	~ChFsiBase ()
	Destructor of the ChFsiBase class.

Static Public Member Functions
static void	CopySortedToOriginal_Invasive_R3 (thrust::device_vector< Real3 > &original, thrust::device_vector< Real3 > &sorted, const thrust::device_vector< uint > &gridMarkerIndex)
	Copy sorted data into original data (real3). More...
static void	CopySortedToOriginal_NonInvasive_R3 (thrust::device_vector< Real3 > &original, const thrust::device_vector< Real3 > &sorted, const thrust::device_vector< uint > &gridMarkerIndex)
	Copy sorted data into original data (real3). More...
static void	CopySortedToOriginal_Invasive_R4 (thrust::device_vector< Real4 > &original, thrust::device_vector< Real4 > &sorted, const thrust::device_vector< uint > &gridMarkerIndex)
	Copy sorted data into original data (real4). More...
static void	CopySortedToOriginal_NonInvasive_R4 (thrust::device_vector< Real4 > &original, thrust::device_vector< Real4 > &sorted, const thrust::device_vector< uint > &gridMarkerIndex)
	Copy sorted data into original data (real4). More...
Static Public Member Functions inherited from chrono::fsi::ChFsiBase
static void	computeGridSize (uint n, uint blockSize, uint &numBlocks, uint &numThreads)
	Compute number of blocks and threads for calculation on GPU. More...

Public Attributes
std::shared_ptr< ChCollisionSystemFsi >	fsiCollisionSystem
	collision system for building neighbors list

Protected Attributes
std::shared_ptr< ChBce >	bceWorker
	pointer to Boundary Condition Enforcing particles class
std::shared_ptr< SphMarkerDataD >	sphMarkersD
	device copy of the SPH particles data
std::shared_ptr< SphMarkerDataD >	sortedSphMarkers_D
	device copy of the sorted sph particles data
std::shared_ptr< ProximityDataD >	markersProximity_D
	pointer object that holds the proximity of the particles
std::shared_ptr< FsiData >	fsiData
	pointer to sph general data
thrust::device_vector< Real3 >	vel_vis_Sorted_D
	sorted visualization velocity data
thrust::device_vector< Real3 >	vel_XSPH_Sorted_D
	sorted xsph velocity data
thrust::device_vector< Real4 >	derivVelRhoD_Sorted_D
	sorted derivVelRhoD
bool	verbose
Protected Attributes inherited from chrono::fsi::ChFsiBase
std::shared_ptr< SimParams >	paramsH
	simulation parameters (host)
std::shared_ptr< ChCounters >	numObjectsH
	problem counters (host)

Constructor & Destructor Documentation

ChFsiForce()

chrono::fsi::ChFsiForce::ChFsiForce	(	std::shared_ptr< ChBce >	otherBceWorker,
		std::shared_ptr< SphMarkerDataD >	otherSortedSphMarkersD,
		std::shared_ptr< ProximityDataD >	otherMarkersProximityD,
		std::shared_ptr< FsiData >	otherFsiData,
		std::shared_ptr< SimParams >	params,
		std::shared_ptr< ChCounters >	numObjects,
		bool	verb
	)

Base constructor for the ChFsiForce class.

The constructor instantiates the force system and initializes the pointer to external data.

Parameters

otherBceWorker	object that handles BCE particles
otherSortedSphMarkersD	information of particle in the sorted device array
otherMarkersProximityD	object that holds device proximity info
otherFsiData	SPH general data
params	simulation parameters
numObjects	problem counters
verb	verbose output

Member Function Documentation

CopySortedToOriginal_Invasive_R3()

static void chrono::fsi::ChFsiForce::CopySortedToOriginal_Invasive_R3 ( thrust::device_vector< Real3 > &  original, thrust::device_vector< Real3 > &  sorted, const thrust::device_vector< uint > &  gridMarkerIndex  )

static

Copy sorted data into original data (real3).

This function copies the data that are sorted in the collision system, into the original data, where data is real3. The class is invasive, meaning that the sorted data will be modified (and will be equivalent to the original). Therefore, this function should be used whenever sorted data is not needed, but efficiency is preferred.

CopySortedToOriginal_Invasive_R4()

static void chrono::fsi::ChFsiForce::CopySortedToOriginal_Invasive_R4 ( thrust::device_vector< Real4 > &  original, thrust::device_vector< Real4 > &  sorted, const thrust::device_vector< uint > &  gridMarkerIndex  )

static

Copy sorted data into original data (real4).

This function copies the data that are sorted in the collision system, into the original data, where data is real4. The class is invasive, meaning that the sorted data will be modified (and will be equivalent to the original). Therefore, this function should be used whenever sorted data is not needed, but efficiency is preferred.

CopySortedToOriginal_NonInvasive_R3()

static void chrono::fsi::ChFsiForce::CopySortedToOriginal_NonInvasive_R3 ( thrust::device_vector< Real3 > &  original, const thrust::device_vector< Real3 > &  sorted, const thrust::device_vector< uint > &  gridMarkerIndex  )

static

Copy sorted data into original data (real3).

This function copies the data that are sorted in the collision system, into the original data, where data is real3. The class is non-invasive, meaning that the sorted data will not be modified. This comes at the expense of lower efficiency.

CopySortedToOriginal_NonInvasive_R4()

static void chrono::fsi::ChFsiForce::CopySortedToOriginal_NonInvasive_R4 ( thrust::device_vector< Real4 > &  original, thrust::device_vector< Real4 > &  sorted, const thrust::device_vector< uint > &  gridMarkerIndex  )

static

Copy sorted data into original data (real4).

This function copies the data that are sorted in the collision system, into the original data, where data is real4. The class is non-invasive, meaning that the sorted data will not be modified. This comes at the expense of lower efficiency.

ForceSPH()

virtual void chrono::fsi::ChFsiForce::ForceSPH ( std::shared_ptr< SphMarkerDataD >  otherSortedSphMarkersD, std::shared_ptr< FsiBodyStateD >  fsiBodyStateD, std::shared_ptr< FsiMeshStateD >  fsiMesh1DStateD, std::shared_ptr< FsiMeshStateD >  fsiMesh2DStateD, Real  time, bool  firstHalfStep  )

pure virtual

Function to calculate forces on SPH particles.

Implemented by derived classes to compute forces in an implicit integrator using ISPH method (see ChFsiForceI2SPH) or an explicit integrator using WCPSH method (see ChFsiForceExplicitSPH).

Initialize()

virtual void chrono::fsi::ChFsiForce::Initialize ( )

virtual

Synchronize the copy of the data (parameters and number of objects) between device (GPU) and host (CPU).

This function needs to be called once the host data are modified.

Reimplemented in chrono::fsi::ChFsiForceExplicitSPH, and chrono::fsi::ChFsiForceI2SPH.

---

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

• /builds/uwsbel/chrono/src/chrono_fsi/physics/ChFsiForce.cuh