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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.
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.
Fluid-Structure Interaction: Vibrating Pipe
This tutorial demonstrates how to set up fluid-structure interaction (FSI) problems in Simcenter STAR-CCM+.
Running a Dynamic Analysis
Remove the body load from the pipe, and allow it to vibrate in real time.

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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.
  - Linear Stress Analysis: Cantilever I Beam
    This tutorial demonstrates the basic concepts and workflow for linear FE (Finite Element) structural analyses in Simcenter STAR-CCM+.
  - Plane Stress: Plate with Circular Hole in a Tensile Field
    This tutorial demonstrates how to set up a linear elastic FE (Finite Element) stress analysis in Simcenter STAR-CCM+.
  - Hyperelastic Stress Analysis with Adaptive Time-Step: Trileaflet Heart Valve
    Trileaflet valves are prosthetic heart valves that open and close because of the deformation of the flexible leaflets [reflink]. Obtaining a successful simulation of the valve opening event is challenging due to the snap through instability on which the valve operation depends. Simcenter STAR-CCM+ provides a dynamic time-step control that makes a successful simulation possible.
  - Normal Modes Solver: Wind Turbine Blade
    In solid mechanics, normal modes describe the oscillating motion of a solid body at a set of fixed frequencies, known as natural (or resonant) frequencies of the body.
  - Conjugate Heat Transfer and Thermal Stress: Exhaust Manifold
    Simcenter STAR-CCM+ allows you to combine the advantages of the finite volume (FV) and the finite element (FE) methods together in the same simulation.
  - Thermal Stress from Mapped Temperature Data: Exhaust Manifold
    This tutorial demonstrates how to perform thermal stress analysis in Simcenter STAR-CCM+.
  - Fluid-Structure Interaction: Vibrating Pipe
    This tutorial demonstrates how to set up fluid-structure interaction (FSI) problems in Simcenter STAR-CCM+.
    - Prerequisites
      The instructions in the Fluid Structure Interaction - Vibrating Pipe tutorial assume that you are already familiar with certain techniques in Simcenter STAR-CCM+.
    - Loading the Initial Simulation
      Load the starting simulation for this tutorial. The starting simulation file includes predefined geometry parts that represent the pipe and fluid geometry. Each part is assigned to a region, and part surfaces are assigned to region boundaries as appropriate. The boundary types and symmetry conditions are fully defined.
    - Selecting the Physics Models
      The starting simulation file also includes predefined physics continua, Fluid Physics and Solid Physics, that are assigned to the fluid and the solid region, respectively. For each continuum, activate appropriate physics models to specify the fluid and the pipe behavior, including coupling at the fluid-solid interface.
    - Creating the Fluid-Structure Interface
      In fluid-structure interaction problems, the fluid and solid regions exchange field data across a shared interface. As the FE solid stress framework is completely based on parts, you create a fluid-structure interface from the contact between the fluid and solid parts.
    - Specifying Material Properties
      Define the equation of state of the compressible fluid by specifying the fluid density in terms of pressure and speed of sound. Also, specify the pipe material.
    - Generating the Mesh
      You are provided with predefined parts-based mesh operations, which are fully set up and ready for execution. These operations use the Directed Mesher to generate a hexahedral cell mesh for the fluid domain, and a mesh of linear hexahedral elements (hex8) for the solid domain.
    - Defining Motion
      Select the appropriate motion models to simulate the deformation of the fluid and solid regions under the external load on the pipe. For the solid region, define a Solid Displacement motion, that allows the pipe mesh to deform in real time based on the computed displacements. For the fluid region, define a Morphing motion, that allows the fluid mesh to deform based on the displacements mapped at the interface.
    - Defining Boundary Conditions and Body Load
      Specify the fluid velocity at the inlet, and constrain the pipe extremities in all degrees of freedom. Also, apply a body load on the pipe to reach an initial deformed configuration.
    - Preparing Analysis Objects
      Prepare plots and scenes to monitor the pipe displacement during the solution progress.
    - Running a Static Analysis
      Run a static analysis to compute the static equilibrium solution.
    - Running a Dynamic Analysis
      Remove the body load from the pipe, and allow it to vibrate in real time.
    - Visualizing the Solution
      Visualize the oscillation of the pipe-water system.
    - Summary
      This tutorial demonstrated how to set up fluid-structure interaction (FSI) problems in Simcenter STAR-CCM+.
  - FSI with Prescribed Solid Motion: Flapping Wing
    In Simcenter STAR-CCM+, you can analyse the two-way coupled fluid-structure interaction of systems whose motion paths are described by multiple superposed motions.
  - FSI and 6-DOF Motion: Stress Analysis on Boat Propeller
    In fluid-structure interaction simulations, you can define the motion of a solid structure relative to the motion of a 6-DOF body. A typical application is the analysis of the mechanical stresses on propellers attached to marine vessels.
  - FSI with Opening and Closing Flow Paths: Diaphragm Valve
    Simcenter STAR-CCM+ provides the capability of performing a two-way coupled fluid-structure interaction (FSI) simulation with opening and closing flow paths, which are due to the deformation of a hyperelastic non-linear material such as rubber. This capability can aid in the design of (but is not limited to) seals, valves, and gaskets used within a range of industries.
  - FSI Remeshing and Tessellated Geometry Parts Contact: Rubber Sleeve
    Simcenter STAR-CCM+ allows you to model the mechanical contact between a deformable structure and the tessellated surfaces of geometry parts within the simulation. This is useful to simulate the interaction between an elastic solid and a rigid obstacle, without modeling the obstacle explicitly.
- 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.

Running a Dynamic Analysis

Remove the body load from the pipe, and allow it to vibrate in real time.

To remove the body load:

Select the Regions > Pipe > Physics Conditions > Body Load Option node and set Method to None.

The pipe-water system has a vibration period of about 0.0023 s. For the dynamic analysis, choose a time-step size of about 1/100th of the natural period of the pipe/water system, which is sufficiently small to give high accuracy and stability. To reduce numerical damping, use the 2nd-order temporal discretization scheme:

Edit the Solvers node and set the following properties:


Node	Property	Setting
Implicit Unsteady	Time Step	2.3e-5 s
Implicit Unsteady	Temporal Discretization	2nd-Order
Solid Stress Solver > Integration Method	Integration Method	Backward Differentiation(2nd Order)
Solid Stress Solver > Static Analysis	Static Analysis	Deactivated
Mesh Morpher	Ignore Gridflux Terms	Deactivated

Edit the Stopping Criteria node and set the following properties:


Node	Property	Setting
Maximum Physical Time	Maximum Physical Time	0.0036 s
Maximum Steps	Enabled	Deactivated
Displacement Criterion	Enabled	Activated

Optionally, you can export the displacement scene as a graphics file at specified time intervals. You can then use the graphics files to form animations of the pipe vibration using software of your choice:

Edit the Scenes > Y-Displacement > Attributes node and set the following properties:


Node	Property	Setting
Update	Save To File	Activated
Update	Trigger	Time Step
Time-Step Frequency	Frequency	6
Hardcopy	Output Width	800
Hardcopy	Output Height	600

Simcenter STAR-CCM+ saves the scene to the current directory every six time-steps, for a total of 26 .png files.

Before running the transient simulation, reset the iteration number to start from one:

From the Solution menu, select Clear Solution...
In the Clear Solution dialog, deactivate Fields and Reset Mesh, then click OK.
Click (Run).
The iteration progress can be monitored in the Output window. Monitor the convergence by viewing the Residuals using the visualization tabs in the Graphics window.
When the solution is complete, save the simulation as vibratingPipe_dynamic.sim.