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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.
Aeroacoustics
The tutorials in this set illustrate various Simcenter STAR-CCM+ features for solving aeroacoustic simulations.
Ffowcs Williams-Hawkings: Sound Propagation
This tutorial compares the Post FW-H model with the FW-H On-The-Fly model.
Plotting Sound Pressure Levels from FW-H Data
While generating the .simh file for the DES and FW-H On-The-Fly tutorial, STAR-CCM+ collected sound pressure data from two point receivers for the FW-H On-The-Fly model. In the following sections, you prepare plots of the sound pressure levels using data from both the On-The-Fly FW-H model and the Post FW-H model.
Creating a Plot of Sound Pressure Level
The spectral analysis plot takes its data from the fast Fourier transform created previously.

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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.
- 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.
  - Broadband Models: Noise from a Cylinder (Preparation)
    This tutorial demonstrates how to set up aeroacoustics problems in Simcenter STAR-CCM+. The flow around a cylinder is used in the simulation to describe the required steps.
  - DES and FW-H On-The-Fly: Noise from a Cylinder (Unsteady Analysis)
    In the previous section of this tutorial, you completed the steady-state analysis runs for qualifying the volume mesh. In this section, continuing from the previous simulation file, you set up the final transient run for an unsteady analysis of the near field and an FW-H analysis of the far field.
  - Ffowcs Williams-Hawkings: Sound Propagation
    This tutorial compares the Post FW-H model with the FW-H On-The-Fly model.
    - Loading the Initial Simulation
      You start from existing simulation and solution history files that contain objects and solution data from the tutorial DES and FW-H On-The-Fly: Noise from a Cylinder (Unsteady Analysis).
    - Preparing for Analysis with the Post FW-H Model
      In this section, you select the Post FW-H model, create a CAE model based on the data that are stored in the .simh file, set up two Post FW-H receivers, then run the Post FW-H solver. Receivers are points at specific distances from the noise sources where sound pressure is calculated.
    - Plotting Sound Pressure Levels from FW-H Data
      While generating the .simh file for the DES and FW-H On-The-Fly tutorial, STAR-CCM+ collected sound pressure data from two point receivers for the FW-H On-The-Fly model. In the following sections, you prepare plots of the sound pressure levels using data from both the On-The-Fly FW-H model and the Post FW-H model.
      - Applying Fast Fourier Transforms to Table Data
        You use a fast Fourier transform data set to analyze the sound pressure level at different frequencies.
      - Creating a Plot of Sound Pressure Level
        The spectral analysis plot takes its data from the fast Fourier transform created previously.
    - Summary
      This tutorial compared the results of the previous tutorial with those of the Post FW-H solver.
    - Ffowcs Williams-Hawkings: Sound Propagation Tutorial Bibliography
  - Signal Post-Processing: FFT and Wavenumber
    Several further analyses are possible using the simulation history file from the earlier tutorial, DES and FW-H On-The-Fly: Noise from a Cylinder (Unsteady Analysis). These analyses are covered in this tutorial.
  - Acoustic Wave Modeling: Noise from a Cylinder
    This tutorial demonstrates how to set up an acoustic wave simulation in Simcenter STAR-CCM+. The flow around a cylinder is used in the simulation to describe the required steps.
  - Lighthill Wave and Perturbed Convective Wave Modeling: Simplified HVAC Duct
    Noise generated by the air handling components in heating, ventilation, and air conditioning (HVAC) systems is a large contributor to interior cabin sound levels. Investigating the sources of noise and modifying the design accordingly, leads to better and quieter systems.
  - Sponge Layer Modeling: Simplified Tailpipe
    Unsteady aeroacoustics simulations require effective non-reflective boundary conditions to prevent spurious reflected acoustic waves from the boundaries of the computational domain interfering with the aeroacoustic results.
- 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.

Creating a Plot of Sound Pressure Level

The spectral analysis plot takes its data from the fast Fourier transform created previously.

To create a plot of sound pressure level:

Right-click the Plots node and select New Plot > Monitor Plot.
Rename the Monitor Plot 1 node to FFT.
Right-click the FFT > Data Series node and select Add Data.
The Add Data Providers to Plot dialog opens.
In this dialog, select and expand Derived Data, then select the following items:
- OTF_FWH_Minus90deg100r
- OTF_FWH_Plus90deg100r
- Post_FWH_Minus90deg100r
- Post_FWH_Plus90deg100r

Select the FFT > Axes > Bottom Axis node and set the following properties:


Property	Setting
Logarithmic	Activated
Minimum	100.0
Maximum	10000.0

Select the FFT node and set Title to On-The-Fly FW-H and Post FW-H.

The final plot appears similar to the one shown below.

The Post FW-H model allows you to obtain noise prediction at receiver locations not defined in the original unsteady simulation. As the computational cost of running a Post FW-H analysis is much lower than the cost of running an unsteady analysis, you can continue to explore the solution space for little extra effort.