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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.
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:
DFBI: Lifeboat with Overset Mesh
This tutorial demonstrates use of the Overset Mesh feature with free surface flow and DFBI to model the motion of a lifeboat falling into water. Simcenter STAR-CCM+ automates the grid overlapping process.
Setting the Boundary Conditions
The boundary types have been correctly set previously, so it only remains to set the conditions corresponding to each type.
Bottom Boundary
The following boundary conditions are appropriate for deep water conditions. A bottom boundary can also be a wall for shallow waters.

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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
- 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:
  - Moving Reference Frames: Rotating Fan
    This tutorial outlines the steps that are required to set up and run a rotating radial fan analysis. It uses the Moving Reference Frame model, a steady-state approach that involves two or more frames of reference that can be stationary or moving relative to each other.
  - Rigid Body Motion: Rotating Fan
    This tutorial models the same radial fan problem as the Moving Reference Frames: Rotating Fan tutorial. However, instead of using the steady-state moving reference frame model, this tutorial uses the transient Rigid Body Motion model with actual mesh rotation.
  - DFBI: Lifeboat with Overset Mesh
    This tutorial demonstrates use of the Overset Mesh feature with free surface flow and DFBI to model the motion of a lifeboat falling into water. Simcenter STAR-CCM+ automates the grid overlapping process.
    - Importing the Mesh
      You import a CAD model consisting of two parts: a large block for the background region, and a smaller part from which the boat was subtracted to represent the overset region.
    - Creating Regions and Setting Boundary Types
      Create regions from the Background and Overset parts.
    - Selecting Physics Models
      A physics continuum must be present, and assigned to both regions, before the Overset region can be coupled to the Background region. You create the physics continuum and activate the several physical models that are required to simulate the forces acting on the hull.
    - Coupling the Regions
      You must create an interface between the background and the overset regions.
    - Generating the Mesh
      Proceed with the mesh creation for the case.
    - Transforming the Overset Region
      Translate the lifeboat nearer to the water surface to decrease the simulation time and give it an initial tilt with a horizontal angle of 35.
    - Creating Eulerian Phases
      The materials corresponding to each of the mixture phases are defined as Eulerian phases.
    - Setting the DFBI Motion and 6-DOF Body
      The 6-DOF motion solver is activated when creating the relevant DFBI motion object and assigning it to the fluid region. For this tutorial, you require the DFBI rotation and translation motion.
    - Defining the VOF Waves
      The VOF Wave model generates a number of field functions that are based on the wave parameters that you define. These field functions can be used as boundary and initial conditions in appropriate nodes on the object tree.
    - Setting Initial Conditions
      The initial conditions are set using field functions that are associated with the previously defined VOF Wave. Initial conditions that are set are the free-surface wave profile, the velocity profile within the phases and the hydrostatic pressure.
    - Setting the Boundary Conditions
      The boundary types have been correctly set previously, so it only remains to set the conditions corresponding to each type.
      - Inlet Boundary
        You specify the velocity and the volume fraction at the inlet boundary.
      - Outlet Boundary
        At the oulet boundary, you set the pressure and the volume fraction to correspond to the outgoing wave by using field functions.
      - Bottom Boundary
        The following boundary conditions are appropriate for deep water conditions. A bottom boundary can also be a wall for shallow waters.
      - Top Boundary
        You specify the velocity and the volume fraction at the top boundary.
    - Setting Up Solver Parameters and Stopping Criteria
      As this simulation is transient, it is necessary to set the time step, the maximum number of inner iterations that are permitted in each time step, and the overall physical time for which a solution is obtained.
    - Setting Scenes to Visualize the Solution
      Create scenes to visualize the results as the simulation progresses.
    - Initializing and Running the Simulation
      To verify that the initial conditions applied to the regions are correct, Simcenter STAR-CCM+ allows you to perform just solver initialization to start with and then view the results using an appropriate scene.
    - Summary
      This tutorial introduced the following Simcenter STAR-CCM+ features:
  - DFBI and AMR: Boat In Parameterized Waves
    In Dynamic Fluid-Body Interaction (DFBI) simulations, you can use Adaptive Mesh Refinement (AMR) to dynamically refine the mesh around a moving 6-DOF body based on the computed flow solution.
  - Marine Resistance Prediction: KCS Hull with a Rudder
    This tutorial demonstrates the workflow for setting up a resistance prediction simulation for a marine application.
  - Moving Reference Frames: Marine Propeller in Open Water
    This tutorial demonstrates the workflow for setting up an open water simulation for a marine propeller.
  - Body Force Propeller Method: Marine Self-Propulsion
    One of the challenges in marine engineering is to predict the speed with which a ship hull moves through water in response to the thrust supplied by a spinning propeller. Simcenter STAR-CCM+ provides a methodology by which you can predict this speed.
  - Blade Element Method: Helicopter Rotor-Fuselage Interaction
    The rotating main rotor blades of a helicopter generate a complex flow field that leads to periodic aerodynamic loads on the airframe. Because of these aerodynamic loads, the passenger cabin can be subject to noise and vibration. These aerodynamic interactions affect the performance of helicopters and they can cause structural damage. Simcenter STAR-CCM+ provides a method for simulating the flow generated by rotor blades that does not require you to mesh the blades individually. This method allows you to predict the complex flow field around a helicopter taking into account the fuselage and rotor flow field interaction.
  - Morphing: Cylinder with Boundary Motion
    Simcenter STAR-CCM+ contains a Morphing Motion Model that enables you to define motion on boundary surfaces using several methods.
  - Overset Mesh Small Gap Modeling: Lobe Blower
    Rotary lobe blowers are valveless positive-displacement units. Fluid is pumped by two counter-rotating lobes that are mounted on parallel shafts. Fluid enters through the expanding volume at the suction side of the pump. As the lobes continue to rotate, the fluid is compressed between the lobes and the pump casing and hence transported towards the discharge.
  - Trajectory Motion: Paint Dipping of a Chassis on a Fixed Skid
    Paint dipping is a process by which a component is coated with paint in a dipping tank. Simcenter STAR-CCM+ allows you to simulate this process and therefore study the effects of different trajectories and component speeds.
  - General Remesh: Gerotor Pump with Small Gap
    A Gerotor pump is a unit with an inner and an outer rotor that have different rotational speeds related to their tooth numbers. The dynamically changing volume between the rotors transports the liquid from inlet to outlet.
- 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.

Bottom Boundary

The following boundary conditions are appropriate for deep water conditions. A bottom boundary can also be a wall for shallow waters.

To specify the bottom boundary:

Edit the Regions > Background > Boundaries > Bottom node and set the following properties:


Node	Property	Setting
Physics Conditions
Velocity Specification	Method	Components
Physics Values
Velocity	Method	Field Function
	Vector Function	Vof Wave > Flat Wave > Velocity of Flat Wave
Volume Fraction	Value	[1.0, 0.0]