Create Dynamic Factories

Dynamic factories produce particles over the duration of a simulation. Simulation continues as the particles are created.

To create Dynamic Factories:

In the Creator Tree, select Geometries and then select Factories.
Right-click Factories and then select Add Factory.

Select Add Dynamic Factory and specify the following details:


For	Specify
Number of Mass of Particles	Unlimited Number. Select to create as many particles that will fit on or in the selected Geometry section. If selected, the factory will attempt to create particles continuously from the specified start time until the end of the simulation. Particles will continue to be created even after a section surface or volume is full. This may cause the rest of the simulation to slow down. Total Number Specify the total number of particles that will be produced by the factory. Total Mass Specify the total amount of mass that will be produced by the factory.
Generation Rate
Target Number (per second)	Specify the number of particles the Simulator will try to place in or on the section per second.
Target Mass	Specify the target mass generation rate for the Simulator. When simulation starts, this rate is converted into mass per Time Step. If this is less than the smallest particle mass, the factory does not create a particle but adds the mass to the mass for the next Time Step. Once there is enough mass, the factory creates a particle. If the mass per Time Step is greater than the smallest particle mass, the factory places particles until it reaches the mass per Time Step. Be sure your factory is large enough to create the required mass rate: if not, a warning message may be displayed prompting you to update the rate. Note: Target Mass is not compatible with Cubic, BCC, and FCC factories.
Mass Flow Equation f(t) [kg]	Define a time dependent mass flow equation. For more information on functions, see Force and Torque inputs as equations. Note: The units for the mass flow equation is always kilograms.
Start Time	Specify the time at which particle creation will take place.
Max attempts to place particle	If you select random particle position, you must also define the maximum number of attempts to place a particle. During simulation, EDEM attempts to place particles in a random position in or on the specified section. If placing the particle in that position would cause an overlap with any other physical element in the model, EDEM Simulator will abandon the position and try to find another for the specified number of times for each particle.
Overlap Check Based on	Contact detection between particles can be based on the physical or the contact radius. If you are generating particles which have a contact radius (for example when using the bonded model) selecting the Based on Contact Radius will ensure that the particles are placed with enough separation to ensure that the particles do not bond with one another.
Parameters
Material/Meta-Particles	The Bulk Material created by this factory.
Position	When particles and Meta-Particles are created, they are placed on or in the specified section. Particles are never created on top of one another. When a factory tries to create a particle/Meta-Particle it will repeatedly attempt to find free space to place it. The position of the particles can be: Random. Particles are positioned randomly. Cubic. Particles are created in a simple cubic lattice. Select the Display Lattice option in the Viewer controls pane to show the lattice in the Viewer. BCC lattice. Particles are created in a body-centered cubic lattice. It is defined in the same way as a cubic lattice. FCC lattice. Particles are created in a face-centered cubic lattice. It is defined in the same way as a cubic lattice. Only a random position is selectable when defining a target mass to create.
Velocity	Particles can be given a velocity at the time of creation. Options are: Fixed. All particles have the same fixed velocity. The velocity must be defined as a vector. Random. Each particle is given a velocity at random within a defined range. Normal distribution. The particle velocities have a normal distribution. The particle direction, mean velocity and the standard deviation must be defined. Linear distribution. The particles are given velocities that fall on the line segment between the two velocity vectors provided by you. Spray. The particles are formed in a conical spray. The spray direction is defined as a velocity vector. The angle is the angle of maximum deviation from the normal. The mean velocity and standard deviation must also be defined.
Orientation	Particles can be given an orientation at the time of creation. This is useful for non-spherical particles. Options are: Fixed. All particles have the same fixed orientation. The orientation is defined in an orientation matrix. EDEM automatically adjusts the values you enter to maintain an orthogonal orientation matrix. Random. Each particle is given a random orientation.
Angular velocity	Particles can be given an angular velocity at the time of creation, as they will be spinning when placed on or in the specified section. Options are: Fixed. All particles have the same fixed angular velocity. The velocity must be defined as a vector. Random. Each particle is given an angular velocity at random within a defined range. Normal distribution. The particle angular velocities have a normal distribution. The particle direction, average angular velocity and the standard deviation must be defined. Linear distribution. Particles are given angular velocities that fall on an arbitrary arc drawn between two velocity vectors.
Rigid Link	Indicates that particles can be linked to a Geometry section. When Rigid Link is not active, the particle will inherit the motion from the Geometry section and this will override any other applied velocity or angular velocity. Select one of the following options: Off Rigid Link is not active. On Contact Rigid Link will be active when contact occurs between the particle and Geometry section. On Creation Rigid Link will be active as soon as the particle is created. On Time Rigid Link will activate at the time specified.
Custom property	If you have defined any custom properties, particles can be given a custom property value at the time of creation. Options are: Fixed. All particles have the same fixed value. Initial. Particles use the initial value of the property. Normal. Custom property values have a normal distribution. The mean and standard deviation must be defined. Random. Each particle is given a value at random within a defined range.

Note: To change the Factory type, right-click the Factory that you have created and then select Change Factory Type.