Description

Base class to calculate force between SPH particles.

This is an abstract class that defines an interface that various SPH method 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. Child class must implement Initialize and ForceSPH methods.

Inheritance diagram for chrono::fsi::ChFsiForce:

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Collaboration diagram for chrono::fsi::ChFsiForce:

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Public Member Functions
	ChFsiForce (std::shared_ptr< ChBce > otherBceWorker, std::shared_ptr< SphMarkerDataD > otherSortedSphMarkersD, std::shared_ptr< ProximityDataD > otherMarkersProximityD, std::shared_ptr< FsiGeneralData > otherFsiGeneralData, std::shared_ptr< SimParams > otherParamsH, std::shared_ptr< ChCounters > otherNumObjects, bool verb)
	Base constructor for the ChFsiForce class. More...

virtual	~ChFsiForce ()
	Destructor of the ChFsiForce.

virtual void	ForceSPH (std::shared_ptr< SphMarkerDataD > otherSphMarkersD, std::shared_ptr< FsiBodiesDataD > otherFsiBodiesD, std::shared_ptr< FsiMeshDataD > fsiMeshD)=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 and ChFsiForceIISPH)

Public Member Functions inherited from chrono::fsi::ChFsiGeneral
	ChFsiGeneral (std::shared_ptr< SimParams > hostParams, std::shared_ptr< ChCounters > hostNumObjects)
	Constructor for the ChFsiGeneral class. More...

virtual	~ChFsiGeneral ()
	Destructor of the ChFsiGeneral class.

void	computeGridSize (uint n, uint blockSize, uint &numBlocks, uint &numThreads)
	Compute number of blocks and threads for calculation on GPU. More...

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...

Protected Attributes
std::shared_ptr< ChFsiLinearSolver >	myLinearSolver
	pointer to the linear solver type

std::shared_ptr< ChBce >	bceWorker
	pointer to Boundary Condition Enforcing particles class

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

std::shared_ptr< SphMarkerDataD >	sphMarkersD
	device copy of the SPH particles data

std::shared_ptr< SphMarkerDataD >	sortedSphMarkersD
	device copy of the sorted sph particles data

std::shared_ptr< ProximityDataD >	markersProximityD
	pointer object that holds the proximity of the particles

std::shared_ptr< FsiGeneralData >	fsiGeneralData
	pointer to sph general data

std::shared_ptr< SimParams >	paramsH
	pointer to simulation parameters

std::shared_ptr< ChCounters >	numObjectsH
	pointer to number of objects, fluid and boundary particles

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

Additional Inherited Members
Protected Member Functions inherited from chrono::fsi::ChFsiGeneral
uint	iDivUp (uint a, uint b)
	Return a/b or a/b + 1.

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< FsiGeneralData >	otherFsiGeneralData,
		std::shared_ptr< SimParams >	otherParamsH,
		std::shared_ptr< ChCounters >	otherNumObjects,
		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
otherFsiGeneralData	SPH general data
otherParamsH	simulation parameters on host
otherNumObjects	size of different objects in the system
verb	verbose terminal 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 >	otherSphMarkersD,
		std::shared_ptr< FsiBodiesDataD >	otherFsiBodiesD,
		std::shared_ptr< FsiMeshDataD >	fsiMeshD
	)

pure virtual

Function to calculate forces on SPH particles.

This is a virtual method that needs to be overridden by the child classes to compute forces in an implicit integrator using ISPH method (see ChFsiForceI2SPH and ChFsiForceIISPH) 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, chrono::fsi::ChFsiForceI2SPH, and chrono::fsi::ChFsiForceIISPH.

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

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

Description

Public Member Functions

Static Public Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ ChFsiForce()

Member Function Documentation

◆ CopySortedToOriginal_Invasive_R3()

◆ CopySortedToOriginal_Invasive_R4()

◆ CopySortedToOriginal_NonInvasive_R3()

◆ CopySortedToOriginal_NonInvasive_R4()

◆ ForceSPH()

◆ Initialize()