Defining the motion of boundary particles

[Nadun19]

Hi

I want to load in the x,y,z positions (i.e. using a csv file) of the boundary SPH particles over time. Which function should I use to accomplish this? I had a look at all the examples available and I couldn't find a suitable one.

Thanks
Nadun

[Xiangyu-Hu]

Do you require reload the data during the simulation? If it is the case, you can write a simple dynamics in which the particle position can be updated according to read data.

[Xiangyu-Hu]

It seems a sub type of constraint solid dynamics.

SPHinXsys/src/shared/particle_dynamics/solid_dynamics/constraint_dynamics.h

Lines 61 to 78 in 6e9db3a

	template <class DynamicsIdentifier>
	class BaseMotionConstraint : public BaseLocalDynamics<DynamicsIdentifier>, public SolidDataSimple
	{
	public:
	explicit BaseMotionConstraint(DynamicsIdentifier &identifier)
	: BaseLocalDynamics<DynamicsIdentifier>(identifier), SolidDataSimple(identifier.getSPHBody()),
	pos_(particles_->pos_), pos0_(particles_->pos0_),
	n_(particles_->n_), n0_(particles_->n0_),
	vel_(particles_->vel_), acc_(particles_->acc_){};
	virtual ~BaseMotionConstraint(){};
	protected:
	StdLargeVec<Vecd> &pos_, &pos0_;
	StdLargeVec<Vecd> &n_, &n0_;
	StdLargeVec<Vecd> &vel_, &acc_;
	};

you can derive from this class for the proposed function.

[Nadun19]

Great thanks!