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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.
Mesh
The tutorials in this set illustrate various STAR-CCM+ features for building CFD meshes.
Surface Wrapper: Intake Manifold
This tutorial demonstrates how to use the surface wrapper to extract the internal fluid surface from a collection of parts that represent an intake manifold assembly.

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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.
  - Surface Wrapper: Intake Manifold
    This tutorial demonstrates how to use the surface wrapper to extract the internal fluid surface from a collection of parts that represent an intake manifold assembly.
    - Prerequisites
      The instructions in the Surface Wrapper: Intake Manifold tutorial assume that you are already familiar with certain techniques in Simcenter STAR-CCM+.
    - Importing the Surface Mesh
      To set up the Simcenter STAR-CCM+ simulation, launch a simulation and import the supplied surface mesh.
    - Identifying Important Boundaries
      The import process created 11 new parts which you can combine and rename appropriately.
    - Activating the Wrapper Model
      Close or “cap off” any open boundaries or large holes in the surface so that the wrapper can determine what is inside the geometry and what is outside.
    - Setting the Initial Reference Values
      Values for the surface wrapper must be set with consideration of the parameters of the geometry.
    - Capping the Geometry
      As you are extracting the internal volume of the manifold, then a mostly watertight import surface must be supplied as a starting point. Achieve this surface by capping-off the open inlet and outlet boundary areas in the manifold.
    - Running the Leak Detector
      To highlight any remaining holes before the first wrap, run leak detection.
    - Producing a Basic Wrap
      Before refining the surface wrapper, review the outcome from running the surface wrapper with the initial default settings.
    - Improving the Manifiold Body Fidelity and Curvature
      Reducing the Manifold Body Fidelity and Curvature values has a significant and immediate impact on the general model fidelity.
    - Improving the Sensor Part Definition
      The sensor part is joined to the bottom surface of the manifold body, which is not desirable.
    - Improving the Channels Definition
      In addition to refining the surfaces of parts in the wrap, you can perform partial wrapping, where you exclude selected parts or part surfaces from the wrap operation. When you exclude parts from the wrap, the original tessellation of the excluded parts is passed through to the final wrap surface.
    - Improving the Flange Definition
      Since the surface wrapper has defeatured the original detail of the flange parts, a contact prevention is used to improve the output of the surface wrapper around the flanges.
    - Improving the Valve Definition
      Since the surface wrapper has defeatured the gap between the valve and the cross pipe surface, another contact prevention is used to improve the output of the surface wrapper.
    - Improving the Baffle Definition
      The baffles within the geometry are initially represented as intersecting surfaces which pass through the outlet pipes that emerge from the manifold body.
    - What to Do Next
      The surface wrapper always provides a closed surface definition. The next step is to improve the overall quality of the triangulation so that you can generate the volume mesh.
    - Summary
      This tutorial introduced the following:
  - Surface Repair Tools Brake Assembly
    Simcenter STAR-CCM+ provides a suite of tools to help you prepare surface geometry so that it is ready for meshing. This tutorial provides an introduction to some of these tools, using the example of a brake assembly.
  - Parts-Based Meshing External Aerodynamics
    This tutorial demonstrates how to set up a simulation using the parts-based meshing approach.
  - Mesh Operations: Imported Control Valve
    This tutorial demonstrates how to use the surface and volume meshing operations within Simcenter STAR-CCM+ to generate a polyhedral volume mesh with prism layers for a single region. The inputs required to build a trimmed cell mesh with prism layers are also covered.
  - Meshing: Multi-Part Heat Exchanger
    This tutorial demonstrates how to use the surface and volume meshing tools while working with multiple parts within Simcenter STAR-CCM+.
  - Directed Meshing: Electrical Machine
    This tutorial demonstrates how to use the directed meshing tool in STAR-CCM+. Directed meshing allows you to generate a high-quality structured mesh by creating quadrilateral elements on a surface of a body and then sweeping them through its volume.
  - Local Wrapper: European Truck
    Local wrapping speeds up re-execution of the surface wrapper after local changes are made to the input geometry or wrapper settings.
  - Gap Closure in Surface Wrapper: Drone Main Body
    When using the surface wrapper for geometries that have feature-level holes or gaps, you can find that the core wrapper is unable to cover the whole surface with a closed wrap. To assist, Simcenter STAR-CCM+ provides a gap closure option that detects and fills these larger voids in the surface.
  - Turbomachinery Mesher: Compressor Stage
    When modelling the flow in turbomachinery applications, a flow-aligned structured mesh is required for accurate solution analysis. The Turbomachinery Mesh operation in Simcenter STAR-CCM+ generates a flow-aligned structured mesh from user-specified input surfaces and parameters.
- 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:
- 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.

Surface Wrapper: Intake Manifold

This tutorial demonstrates how to use the surface wrapper to extract the internal fluid surface from a collection of parts that represent an intake manifold assembly.

The surface wrapper is run several times to present the general iterative nature of the tool when dealing with new or unfamiliar geometries. With each iteration, additional features and options are included to improve the overall fidelity of the resultant wrapped surface. With experience, you can utilize the surface wrapper and get the desired result in one or two iterations.

The geometry is shown below:

The manifold assembly is composed of several parts, including the main body, mounting struts, air-flow sensor, control valve, and directional flow baffles. Most parts are in their original CAD form and have not been prepared for use in a CFD analysis.

For a simple case with only a few parts, manual repair to remove unwanted surfaces and stitch together remaining ones to form a closed volume geometry, is a realistic solution. As the number of parts and overall complexity increases, however, manual repair becomes inefficient. Instead, use the surface wrapper to extract a high-fidelity representation of the geometry. Use the representation in the surface remesher to obtain a high-quality triangulation from which the volume meshing tools can proceed.

The issues that the surface wrapper deals with in this example are:

Material thickness
Open flow boundaries
Disconnected geometry/flanges
Overlaps/double surfaces
Intersecting bodies (struts)
Surface holes
Channels
Internal thin wall baffles
Close proximity bodies (valve, sensor)

These issues are illustrated in the cut-away diagram below:

The surface wrapper can be a fast and efficient process of extracting both internal and external surfaces from CAD type geometries. Successful use of the wrapper requires practice, due to the numerous paths available. For example, tweaking some of the basic input values to deal with a particular feature can sometime have a significant effect on the overall result. Repeated use of the wrapper however builds up a wealth of experience.