walberla::mesa_pd::kernel::VelocityVerletPreForceUpdate Class Reference

Detailed Description

Velocity verlet integration for all particles.

Velocity verlet integration is a two part kernel. preForceUpdate has to be called before the force calculation and postFroceUpdate afterwards. The integration is only complete when both functions are called. The integration is symplectic.

Wachs, A. Particle-scale computational approaches to model dry and saturated granular flows of non-Brownian, non-cohesive, and non-spherical rigid bodies. Acta Mech 230, 1919–1980 (2019). https://doi.org/10.1007/s00707-019-02389-9

This kernel requires the following particle accessor interface

const walberla::mesa_pd::Vec3& getPosition(const size_t idx) const;
void setPosition(const size_t idx, const walberla::mesa_pd::Vec3& v);
 
const walberla::mesa_pd::Vec3& getLinearVelocity(const size_t idx) const;
void setLinearVelocity(const size_t idx, const walberla::mesa_pd::Vec3& v);
 
const walberla::real_t& getInvMass(const size_t idx) const;
 
const walberla::mesa_pd::Vec3& getForce(const size_t idx) const;
void setForce(const size_t idx, const walberla::mesa_pd::Vec3& v);
 
const walberla::mesa_pd::Vec3& getOldForce(const size_t idx) const;
void setOldForce(const size_t idx, const walberla::mesa_pd::Vec3& v);
 
const walberla::mesa_pd::Rot3& getRotation(const size_t idx) const;
void setRotation(const size_t idx, const walberla::mesa_pd::Rot3& v);
 
const walberla::mesa_pd::Vec3& getAngularVelocity(const size_t idx) const;
void setAngularVelocity(const size_t idx, const walberla::mesa_pd::Vec3& v);
 
const walberla::mesa_pd::Mat3& getInvInertiaBF(const size_t idx) const;
 
const walberla::mesa_pd::Mat3& getInertiaBF(const size_t idx) const;
 
const walberla::mesa_pd::Vec3& getTorque(const size_t idx) const;
void setTorque(const size_t idx, const walberla::mesa_pd::Vec3& v);
 
const walberla::mesa_pd::Vec3& getOldTorque(const size_t idx) const;
void setOldTorque(const size_t idx, const walberla::mesa_pd::Vec3& v);
 
const walberla::mesa_pd::data::particle_flags::FlagT& getFlags(const size_t idx) const;

#include <VelocityVerlet.h>

Public Member Functions
	VelocityVerletPreForceUpdate (const real_t dt)
template<typename Accessor >
void	operator() (const size_t i, Accessor &ac) const

Public Attributes
real_t	dt_

Constructor & Destructor Documentation

VelocityVerletPreForceUpdate()

walberla::mesa_pd::kernel::VelocityVerletPreForceUpdate::VelocityVerletPreForceUpdate ( const real_t  dt )

inline

Member Function Documentation

operator()()

template<typename Accessor >

void walberla::mesa_pd::kernel::VelocityVerletPreForceUpdate::operator() ( const size_t  i, Accessor &  ac  ) const

inline

Member Data Documentation

dt_

real_t walberla::mesa_pd::kernel::VelocityVerletPreForceUpdate::dt_

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

• /builds/administration/walberla-website/walberla/src/mesa_pd/kernel/VelocityVerlet.h