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Tutorials
Tutorials show you how to use Simcenter STAR-CCM+ for various applications in a step-by-step format with recommendations for setup, initialization and steps of the solution process specific to the application. Macro and simulation files are available for download for a large proportion of cases.
Discrete Element Method
The tutorials in this set illustrate various Simcenter STAR-CCM+ features for simulating Discrete Element Method problems
Meshfree DEM: Excavator
For DEM simulations of particles that are not significantly impacted by the surrounding fluid, Simcenter STAR-CCM+ allows you to model the particle behavior without requiring a volume mesh. This type of simulation is known as meshfree DEM.
Prescribing the Bucket Motion
You prescribe the motion of the excavator shovel as a translational motion in the X-Y plane superposed with a rotational motion around the X axis. The starting simulation file contains field functions that describe this motion.

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Tutorials
Tutorials show you how to use Simcenter STAR-CCM+ for various applications in a step-by-step format with recommendations for setup, initialization and steps of the solution process specific to the application. Macro and simulation files are available for download for a large proportion of cases.
- Using Tutorial Macros and Files
  Macros, input files, and final simulation files for a range of tutorials are provided as an optional download package on the Support Center website. These macros and final simulation files are provided as an aid to the written tutorials, so that you can check your final results against the downloaded files, or against a simulation that is built and run using the macros.
- Introduction
  Welcome to the Simcenter STAR-CCM+ introductory tutorial. In this tutorial, you explore the important concepts and workflow. Complete this tutorial before attempting any others.
- Foundation Tutorials
  The foundation tutorials showcase the major features of Simcenter STAR-CCM+ in a series of short tutorials.
- Geometry
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for creating and working with parts and 3D-CAD.
- Mesh
  The tutorials in this set illustrate various STAR-CCM+ features for building CFD meshes.
- Incompressible Flow
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for incompressible fluid flows as well as porosity and solution recording
- Compressible Flow
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for compressible fluid flows as well as harmonic balance.
- Heat Transfer and Radiation
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for heat transfer, radiation, and thermal comfort.
- Multiphase Flow
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for simulating multiphase fluid flow problems
- Discrete Element Method
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for simulating Discrete Element Method problems
  - DEM Particles in a Conveyor
    The purpose of this tutorial is to provide a guide to setting up a simulation using the Discrete Element Method.
  - DEM Particle Settling
    This tutorial simulates a three-dimensional solid flow through a model blast furnace to predict the formation of the deadman region at the base of the furnace.
  - Cylindrical Particles in a Rotating Drum
    This tutorial simulates a large number of cylindrical-shaped tablets tumbling in a rotating drum and being sprayed with a protective coating.
  - Arbitrarily Shaped Particles: DEM Polyhedra
    This tutorial demonstrates how to compose and inject DEM particles of an arbitrary shape.
  - Meshfree DEM: Excavator
    For DEM simulations of particles that are not significantly impacted by the surrounding fluid, Simcenter STAR-CCM+ allows you to model the particle behavior without requiring a volume mesh. This type of simulation is known as meshfree DEM.
    - Prerequisites
      The instructions in this tutorial assume that you are already familiar with certain techniques in Simcenter STAR-CCM+.
    - Loading the Starting Simulation File
      You start this tutorial by loading a starting simulation file that contains the geometry of the computational domain including the excavator shovel. The user-defined field functions and the parameters that describe the motion of the excavator shovel are pre-defined within the starting simulation file.
    - Assigning the Particle and Solid Regions
      You assign the Bucket and the Domain geometry parts each to their own region. The two regions are of different types.
    - Selecting the Physics Models for Meshfree DEM
      When you select the Meshfree DEM model, all other models that are typically required for this type of simulation are selected automatically. You also account for the effect of gravity on the particles.
    - Defining the DEM Particles and their Interactions
      You define solid DEM particles of spherical shape that interact with each other and with the walls of the excavator shovel and the domain. This interaction is governed by the Hertz Mindlin model.
    - Prescribing the Bucket Motion
      You prescribe the motion of the excavator shovel as a translational motion in the X-Y plane superposed with a rotational motion around the X axis. The starting simulation file contains field functions that describe this motion.
    - Injecting the Particles
      At the beginning of the simulation, 2000 particles with a diameter of 50 mm are at rest within the domain trench. Simcenter STAR-CCM+ uses injectors to add particles to a simulation.
    - Visualizing the DEM Particles
      To visualize the DEM particles, set up the Scene in preparation for the injection and excavation of the DEM particles.
    - Running the Simulation
      The simulation runs for a physical time duration of 7.0 s with a time-step of 0.01 s. This takes less than a minute of real time to run, allowing you to view the action.
    - Summary
      This tutorial provides an example of used DEM without meshing.
  - Coarse Grain Particles: Fluidized Bed
  - Flexible Fiber Model: Lawnmower
- Motion
  The tutorials in this set illustrate various STAR-CCM+ features for simulating problems with moving geometries and meshes, dynamic fluid body interaction, and rigid body motion:
- Reacting Flow
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for simulating reacting flows such as combustion.
- Solid Stress
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for computing deformation, strain, and stresses in solid regions. They also show how such computations can be coupled to the fluid behavior in an analysis of fluid-structure interaction.
- Aeroacoustics
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for solving aeroacoustic simulations.
- Electromagnetism
  The following tutorials illustrate features for solving problems that involve electromagnetic fields.
- Electrochemistry
  The following tutorial demonstrates chemical reactions induced by an electrical current.
- Battery
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for setting up a battery model:
- Automation
  The tutorials in this set illustrate various Simcenter STAR-CCM+ automation and macro features.
- Design Exploration
  The tutorials in this set illustrate various features for running design exploration studies in Design Manager.
- Coupling with CAE Codes
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for coupling with CAE codes:
- Analysis Methods
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for analysing and visualizing simulation data.
- Simcenter STAR-CCM+ In-cylinder
  The tutorials in this set illustrate features for simulating internal combustion engines in Simcenter STAR-CCM+ using the dedicated add-on Simcenter STAR-CCM+ In-cylinder.

Prescribing the Bucket Motion

You prescribe the motion of the excavator shovel as a translational motion in the X-Y plane superposed with a rotational motion around the X axis. The starting simulation file contains field functions that describe this motion.

The components of the velocity vector for the translational motion are given by:

Figure 1. EQUATION_DISPLAY

v_{x} = 0 m/s v_{y} = {\begin{matrix} \frac{- 0.6 \cos (\frac{π}{2})}{t_{s}} m/s, if t_{} < 2 t_{s} \\ 0 m/s, if t_{} \geq 2 t_{s} \end{matrix} v_{z} = {\begin{matrix} - 0.22 m/s, if t_{} < t_{s} \\ 0 m/s, if t_{} \geq t_{s} \end{matrix}

(5255)

The component of the angular velocity vector is defined as:

Figure 2. EQUATION_DISPLAY

ω_{x} = {\begin{matrix} 0 rad/s, if t_{} < t_{s} \\ 0.4 rad/s, if t_{} \geq t_{s} \end{matrix}

(5256)

where $t_{s} = 3 s$ is the time at which scooping starts.

To prescribe the bucket motion:

Right-click the Tools > Motions node and select New > Translation.
Rename the Translation node to Bucket Motion.
Select the Bucket Motion node and set Translation Velocity to [0.0, ${bucketVy}, ${bucketVz}].
Right-click the Bucket Motion > Superposing Motions node and select New > Rotation.

Select the Rotation > Rotation Axis node and set the following properties:


Node	Property	Setting
Rotation	Direction	[1.0, 0.0, 0.0]
Rotation	Origin	[0.0, -0.629, -1.084] m

Select the Regions > Bucket > Physics Values > Motion Specification node and set Motion to Bucket Motion→Rotation.
Save the simulation.