Description

Class to represent the fluid/granular dynamics system.

This class is used to represent a fluid/granular system and take care of the time integration of the fluid/granular dynamics. This is a class designed for base SPH simulation. The class holds pointer to data, which is hold somewhere else. It also include a forceSystem, which takes care of the computation of force between particles. The forceSystem is owned by the class FsiForce.

Public Member Functions
	FluidDynamics (FsiDataManager &data_mgr, BceManager &bce_mgr, bool verbose, bool check_errors)
	Constructor of the fluid/granular dynamics class. More...

	~FluidDynamics ()
	Destructor of the fluid/granular dynamics class.

void	ProximitySearch ()
	Perform proximity search. More...

void	CopySortedMarkers (const std::shared_ptr< SphMarkerDataD > &in, std::shared_ptr< SphMarkerDataD > &out)

void	DoStepDynamics (std::shared_ptr< SphMarkerDataD > y, Real t, Real h, IntegrationScheme scheme)
	Advance the dynamics of the SPH fluid system. More...

void	CopySortedToOriginal (MarkerGroup group, std::shared_ptr< SphMarkerDataD > sortedSphMarkersD2, std::shared_ptr< SphMarkerDataD > sphMarkersD)
	Copy markers in the specified group from sorted arrays to original-order arrays.

void	DensityReinitialization ()
	Function to perform Shepard filtering. More...

void	Initialize ()
	Initialize the force and colision systems. More...

std::shared_ptr< FsiForce >	GetForceSystem ()
	Return the FsiForce type used in the simulation.

void	UpdateActivity (std::shared_ptr< SphMarkerDataD > sphMarkersD)
	Update activity of SPH particles. More...

bool	CheckActivityArrayResize ()
	Check if arrays must be resized due to change in particle activity.

Constructor & Destructor Documentation

◆ FluidDynamics()

chrono::fsi::sph::FluidDynamics::FluidDynamics	(	FsiDataManager &	data_mgr,
		BceManager &	bce_mgr,
		bool	verbose,
		bool	check_errors
	)

Constructor of the fluid/granular dynamics class.

Instantiate FsiForce, i.e. force system;
Copy the pointer to SPH particle data, parameters, and number of objects to member variables.

Parameters

data_mgr	FSI data manager
bce_mgr	BCE manager
verbose	verbose output
check_errors	check CUDA errors

Member Function Documentation

◆ DensityReinitialization()

void chrono::fsi::sph::FluidDynamics::DensityReinitialization ( )

Function to perform Shepard filtering.

It calculates the densities directly, not based on the derivative of the density. This function is used in addition to the density update in UpdateFluid.

◆ DoStepDynamics()

void chrono::fsi::sph::FluidDynamics::DoStepDynamics	(	std::shared_ptr< SphMarkerDataD >	y,
		Real	t,
		Real	h,
		IntegrationScheme	scheme
	)

Advance the dynamics of the SPH fluid system.

In a explicit scheme, the force system calculates the forces between the particles which are then used to update the particles position, velocity, and density; The density is then used, through the equation of state, to update pressure. For the implicit SPH scheme, the pressures are updated instead of density.

Parameters

y	marker state (in/out)
t	current simulation time
h	simulation stepsize
scheme	integration scheme

◆ Initialize()

void chrono::fsi::sph::FluidDynamics::Initialize ( )

Initialize the force and colision systems.

Synchronize data between device and host (parameters and counters).

◆ ProximitySearch()

void chrono::fsi::sph::FluidDynamics::ProximitySearch ( )

Perform proximity search.

Sort particles (broad-phase) and create neighbor lists (narrow-phase)

◆ UpdateActivity()

void chrono::fsi::sph::FluidDynamics::UpdateActivity ( std::shared_ptr< SphMarkerDataD > sphMarkersD )

Update activity of SPH particles.

SPH particles which are in an active domain (e.g., close to a solid) are set as active particles.

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

/builds/uwsbel/chrono/src/chrono_fsi/sph/physics/FluidDynamics.cuh