Flow around an Ahmed Body using StarCCM+

This project deals with simulating the flow around an Ahmed Body, which is a prototypical car model. In order to perform this simulation, a computational domain will be defined in the form of a virtual wind tunnel. The simulation will be run for 25 and 35° slant angles and the flow patterns will be studied for both cases. Multiple cases for various slant angles can be run to show how the separation at the rear takes place and how the wake is affected, ultimately affecting the drag produced by the body. Finally, the results will be compared with the experimental results to get an idea of which solution and turbulence models to use and fine tune the setup to provide the best results.

  • Duration : 1 Month
  • Domain : MECHANICAL ENGINEERING, AUTOMOTIVE ENGINEERING, MATERIALS ENGINEERING, AEROSPACE ENGINEERING, AERONAUTICAL ENGINEERING
  • Benefits : This project deals with simulating the flow around an Ahmed Body, which is a prototypical car model. In order to perform this simulation, a computational domain will be defined in the form of a virtual wind tunnel. The simulation will be run for 25 and 35° slant angles and the flow patterns will be studied for both cases. Multiple cases for various slant angles can be run to show how the separation at the rear takes place and how the wake is affected, ultimately affecting the drag produced by the body. Finally, the results will be compared with the experimental results to get an idea of which solution and turbulence models to use and fine tune the setup to provide the best results.
  • Price : 30000
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What will you do in this project?

    In this project, you will work on a Ahmed body with slant angles of 25° and 35° and run the simulation. In this project you will setup and run the case in StarCCM+ taking into consideration various meshing and physics parameters to obtain the solution as obtained in the experiments. This will be done in the following steps,

    • Modelling the Ahmed body and setup of virtual wind tunnel in StarCCM+
    • Meshing such that the physics is accurately captured
    • Setting up the simulation in accordance with the experimentation
    • Visualising the results using scalar and vector scenes
    • Validating the results obtained with experimental results.

    Project Highlights

    The project is an advanced level project
    • This project is useful for undergraduate, graduate or post graduate students looking to understand how to setup an external aerodynamics simulation in StarCCM.
    Pre-requisites
      • Must be comfortable with setting up a case in StarCCM+
      • Need basic background in CFD and Aerodynamics
      • Need basic knowledge of MS Excel or a scripting language
    Learning Outcome
    • You will learn StarCCM+
    •  Understand the importance of a good mesh and the y+ value
    • Difference between turbulence models and how they predict the results

    Flow around an Ahmed Body using StarCCM+

    This project deals with simulating the flow around an Ahmed Body, which is a prototypical car model.  In order to perform this simulation, a computational domain will be defined in the form of a virtual wind tunnel. The simulation will be run for 25 and 35° slant angles and the flow patterns will be studied for both cases. Multiple cases for various slant angles can be run to show how the separation at the rear takes place and how the wake is affected, ultimately affecting the drag produced by the body. Finally, the results will be compared with the experimental results to get an idea of which solution and turbulence models to use and fine tune the setup to provide the best results. 

    • You will perform an aerodynamic analysis on the Ahmed body using StarCCM+.
    • You will learn the theory behind creating a virtual wind tunnel.
    • You will understand the meshing setup and requirement for prism layers and wake refinement.
    • You will understand how different turbulence models work.
    • You will learn to create valuable plots and post-process data.

    FAQ

    Frequently Asked Questions

    1How is this project going to help me?

    SKILL-LYNC projects are mapped closely with what industry expects. When you work on a SKILL-LYNC project and publish it in your profile, recruiters are automatically notified about your profile.  Your project submissions are graded so that students can get critical feedback on your work

    2Can I add this project in my resume?

    You bet!

    3What are the pre-requisites for this project?

    • A few premium projects might require a prior understanding of fundamental concepts
    • In such a case, you will be given access to appropriate learning materials to first learn those concepts before jumping to the project


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