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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.
Reacting Flow
The tutorials in this set illustrate various Simcenter STAR-CCM+ features for simulating reacting flows such as combustion.
Complex Chemistry: Methane-Air Jet Flame
This tutorial demonstrates how to set up and solve a complex chemistry simulation to model finite-rate chemistry in a flame.
Importing the Complex Chemistry Definition
The ASCII Chemkin file set consists of a chemical mechanism file, a thermodynamics file and a transport file. The chemical mechanism file contains a list of the species and their reaction rates. The thermodynamic file contains the elemental composition of the species, as well as the thermodynamic properties to calculate the specific heat, enthalpy and entropy. The transport file contains the kinetic theory parameters to calculate molecular transport properties and can be optionally imported.

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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:
- Reacting Flow
  The tutorials in this set illustrate various Simcenter STAR-CCM+ features for simulating reacting flows such as combustion.
  - Complex Chemistry: Methane-Air Jet Flame
    This tutorial demonstrates how to set up and solve a complex chemistry simulation to model finite-rate chemistry in a flame.
    - Prerequisites
      The instructions in the Complex Chemistry: Methane-Air Jet Flame tutorial assume that you are already familiar with certain techniques in Simcenter STAR-CCM+.
    - Importing the Mesh and Naming the Simulation
      To set up the Simcenter STAR-CCM+ simulation, launch a simulation and import the supplied volume mesh.
    - Setting up the Models
      The Complex Chemistry model is used with the Segregated Flow model to simulate the turbulent reacting flow of a compressible multi-component gas.
    - Importing the Complex Chemistry Definition
      The ASCII Chemkin file set consists of a chemical mechanism file, a thermodynamics file and a transport file. The chemical mechanism file contains a list of the species and their reaction rates. The thermodynamic file contains the elemental composition of the species, as well as the thermodynamic properties to calculate the specific heat, enthalpy and entropy. The transport file contains the kinetic theory parameters to calculate molecular transport properties and can be optionally imported.
    - Setting Simulation Conditions and Controls
      In this section, you set the initial conditions, boundary conditions, solver settings, and stopping criteria.
    - Preparing Analysis Objects
      Create reports to monitor the axial temperature distribution and the mole fraction of CO in the fluid region.
    - Running the Simulation and Reviewing the Results
      The simulation is ready to run and you can review the results as the simulation is running.
    - Bibliography
  - Spray Combustion: n-Dodecane
    In this tutorial, you simulate spray combustion using the Steady Laminar Flamelet (SLF) model with the Soot Method of Moments model.
  - Flamelet Generated Manifold: Perfectly Premixed Combustion with Adaptive Meshing
    This tutorial simulates lean perfectly-premixed propane combustion using the Flamelet Generated Manifold (FGM) model in a combustor where the flame is stabilized behind a V-shaped bluff body. The Large Eddy Simulation (LES) model is used to directly resolve the large scales of the turbulence, and model the small scale motions, in the flow domain.
  - Surface Chemistry: Methane on Platinum Oxidation
    This tutorial models methane on platinum oxidation using complex chemistry models.
  - Reacting Channels: Steam Methane Reforming
    In this tutorial, you use the Reacting Channel Coupling co-simulation model in Simcenter STAR-CCM+ to solve a reacting flow simulation using the same method as is required for systems such as: reformers, crackers, and process heaters.
  - Acoustic Modal Analysis: Thermo-Acoustic Stability of a Cylindrical Burner
    Thermo-acoustic instability, that is, large-amplitude pressure oscillations, can be encountered in many devices such as gas turbines, rocket engines, or combustors. The instabilities, which can have detrimental consequences, are excited by the feedback loop between the unsteady combustion and the natural acoustic modes of the devices.
  - Eddy Break-Up: Coal Combustion
    The combustion of pulverized coal is still one of the main primary energy conversion mechanisms worldwide.
  - Fire and Smoke Wizard: Steckler Room
    This tutorial demonstrates the Fire and Smoke Wizard. The geometry and fire settings closely resemble those Steckler reported, including radiation and wall heat absorption. This setup allows a preliminary comparison with experimental data.
- 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.

Importing the Complex Chemistry Definition

The ASCII Chemkin file set consists of a chemical mechanism file, a thermodynamics file and a transport file. The chemical mechanism file contains a list of the species and their reaction rates. The thermodynamic file contains the elemental composition of the species, as well as the thermodynamic properties to calculate the specific heat, enthalpy and entropy. The transport file contains the kinetic theory parameters to calculate molecular transport properties and can be optionally imported.

By default, the Complex Chemistry model uses the CVODE solver to integrate the chemistry over a time-step. However, this process is computationally expensive. To mitigate the expense, Simcenter STAR-CCM+ automatically activates Clustering on the Chemistry Acceleration node that belongs to the Complex Chemistry model. In Situ Adaptive Tabulation (ISAT) is also available, but is not necessary for the case in this tutorial.

Import the complex chemistry definition [984] from the Simcenter STAR-CCM+ repository.

Right-click the Models > Complex Chemistry node and select Import Chemistry Definition (Chemkin format).
In the Import Chemkin Files dialog:
1. Deactivate Import Transport Properties File, and select the following files from the folder of the downloaded tutorial files, reactingFlow/jetFlame/:
  
  Chemical Mechanism File chem.inp
  
  Thermodynamic Properties File therm.dat
2. Click OK.
The Multi-Component Gas > Gas Components node is populated with all of the gas species in the mechanism and the Reacting > Reactions node is populated with all of the reactions in the mechanism.

The acceleration factor specifies the level of linearization that is applied to the stiff complex chemistry reaction source terms. Simcenter STAR-CCM+ provides the option to dynamically adjust the acceleration factor that is used as the solution proceeds.

Select the Complex Chemistry > Acceleration Factor Control node and activate Automatic Control.