Description
Class to represent the fluid dynamics system.
This class is used to represent a fluid system and take care of the time integration of the fluid 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 markers. The forceSystem is owned by the class.
Inherits chrono::fsi::ChFsiGeneral.
Public Types | |
| enum | Integrator { IISPH, ExplicitSPH, I2SPH } |
| SPH implementation. | |
Public Member Functions | |
| ChFluidDynamics (std::shared_ptr< ChBce > otherBceWorker, std::shared_ptr< ChFsiDataManager > otherFsiData, std::shared_ptr< SimParams > otherParamsH, std::shared_ptr< NumberOfObjects > otherNumObjects, ChFluidDynamics::Integrator type) | |
| Fluid dynamics class constructor. More... | |
| ~ChFluidDynamics () | |
| Class destructor. Deletes the force system. | |
| virtual void | IntegrateSPH (std::shared_ptr< SphMarkerDataD > sphMarkersD2, std::shared_ptr< SphMarkerDataD > sphMarkersD1, std::shared_ptr< FsiBodiesDataD > fsiBodiesD, std::shared_ptr< FsiMeshDataD > fsiMeshD, Real dT) |
| Integrate the fluid system in time. More... | |
| virtual void | DensityReinitialization () |
| Function to Shepard Filtering. More... | |
| void | Finalize () |
| Synchronize the copy of the data (parameters and number of objects) between device (GPU) and host (CPU). More... | |
| ChFluidDynamics::Integrator | GetIntegratorType () |
| std::shared_ptr< ChFsiForce > | GetForceSystem () |
Protected Member Functions | |
| virtual void | UpdateFluid (std::shared_ptr< SphMarkerDataD > sphMarkersD, Real dT) |
| Update SPH markers data. More... | |
| virtual void | UpdateFluid_Implicit (std::shared_ptr< SphMarkerDataD > sphMarkersD) |
| virtual void | ApplyBoundarySPH_Markers (std::shared_ptr< SphMarkerDataD > sphMarkersD) |
| Apply boundary to SPH markers (fluid and BCE). More... | |
| virtual void | ApplyModifiedBoundarySPH_Markers (std::shared_ptr< SphMarkerDataD > sphMarkersD) |
Protected Attributes | |
| std::shared_ptr< ChFsiDataManager > | fsiData |
| pointer to the fsi data. The values are maintained externally | |
| std::shared_ptr< ChFsiForce > | forceSystem |
| force system object. It calculates the force between markers. | |
| ChFluidDynamics::Integrator | myIntegrator |
| IISPH by default. | |
| std::shared_ptr< SimParams > | paramsH |
| pointer to parameters. The values are mainained externally. | |
| std::shared_ptr< NumberOfObjects > | numObjectsH |
| pointer to number of objects (fluid markers, number of rigids, boundaries) | |
Constructor & Destructor Documentation
◆ ChFluidDynamics()
| chrono::fsi::ChFluidDynamics::ChFluidDynamics | ( | std::shared_ptr< ChBce > | otherBceWorker, |
| std::shared_ptr< ChFsiDataManager > | otherFsiData, | ||
| std::shared_ptr< SimParams > | otherParamsH, | ||
| std::shared_ptr< NumberOfObjects > | otherNumObjects, | ||
| ChFluidDynamics::Integrator | type | ||
| ) |
Fluid dynamics class constructor.
The class constructor performs the following operations: Instantiate ChFsiForce, i.e. force system; Copy the pointer to fluid data, parameters, and number of objects to member variables.
Member Function Documentation
◆ ApplyBoundarySPH_Markers()
|
protectedvirtual |
Apply boundary to SPH markers (fluid and BCE).
The function applies periodic boundary to the markers.
◆ DensityReinitialization()
|
virtual |
Function to 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.
◆ Finalize()
| void chrono::fsi::ChFluidDynamics::Finalize | ( | ) |
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
◆ IntegrateSPH()
|
virtual |
Integrate the fluid system in time.
The underlying SPH method implementation goes inside this function. In a explicit scheme, to perform the integration, the force system calculates the forces between the particles. Then the forces are used to to update the markers position, velocity, and density in time, the latter is used to update the pressure from an equation of state. In the implicit scheme, the pressures are updated instead of density.
◆ UpdateFluid()
|
protectedvirtual |
Update SPH markers data.
In an explicit formulation, the update Fluid function relies on explicit Euler Integration argorithm.
The documentation for this class was generated from the following file:
- /builds/uwsbel/chrono/src/chrono_fsi/physics/ChFluidDynamics.cuh
