Container Effect on Truck Aerodynamic CFD Simulation,ANSYS Fluent Training


  • The problem numerically simulates the Container Effect on Truck aerodynamics using ANSYS Fluent software.
  • The 3-D geometry is designed in  Solidworks and  Design Modeler software.
  • We used ANSYS Meshing to generate polyhedral mesh; the element number equals 663,127 and 1,095,371 for truckand truck and container,’ respectively.
  • Turbulence is modeled with the  k-w SST model.



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If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
If you need expert consultation through the training video, this option gives you 1-hour technical support.
The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.


Container Effect on Truck Aerodynamic CFD Simulation


Aerodynamics is a part of mechanics that is very important in car design. This is even more important when designing a truck; Because these cars have more weight, the air resistance in their movement should be reduced as much as possible to have better forward movement. Drag force means air resistance to forward motion and is one of the most important forces to be considered.

The aerodynamic CFD simulation of the truck and the drag force calculation helps us have a good prediction of different forces, especially the drag force around the truck. This directly impacts the truck’s fuel consumption and is essential from an energy and environmental perspective.

This project aims to investigate and analyze the drag force on the truck and compare it in two cases with and without a container by ANSYS Fluent software.

First, the truck’s geometry is designed in Solidworks software and  Design Modeler software. The geometry is prepared to create meshing and name selection; then, it is implemented in ANSYS Meshing software. Also, the mesh type is polyhedral, and 663,127 and 1,095,371 elements are produced fortruckand truck and container,’ respectively.


Container Effect on Truck Aerodynamic CFD Simulation Methodology

The flow simulation and investigation have been done by comparing the two truck modes with and without containers. We chose the k-w SST turbulence model with standard wall function to obtain better results in our simulation. The pressure and momentum coupling method is SIMPLE.

The solver used is pressure-based.


Descriptions of geometry, meshing, boundary conditions, fluid properties, Y-plus (Y+) criterion, and results are in order. In both modes, speed, pressure, and drag force will be examined, and we will introduce the best possible mode for drag reduction.

The results show that the drag force is less in the absence of the container than in the presence of it. This means that it is better to move the truck without the container. Of course, if the problem is done locally in the two parts of the back of the truck and the back of the container, the presence of the container will delay the separation of flow in the back of the truck.

On the other hand, the delay in separation causes the flow from the end of the container to cause less drag due to the smaller angle than the edge of the roof of the new truck. The images related to the flow lines in the back of the truck and behind the container show that the intensity of the vortices is effective from the angle of the top edge of the truck in the back of the truck in empty truck condition. This result can also be seen in the pressure coefficient diagram for comparing the two.

2 reviews for Container Effect on Truck Aerodynamic CFD Simulation,ANSYS Fluent Training

  1. Caitlyn

    Hi. At the beginning of the tutorial, it was shown that the transient solver is selected, but at the run calculation tab, it was shown that a steady solver type is selected. Would you please explain that?

    • melika maysoori

      Hi, Caitlyn. Thank you very much for your attention. This is explained in the tutorial video because this product was originally supposed to be simulated in transient. This product is going to be modified and updated. However, you can do the simulation in transient. In the general section, select the transient mode instead of the steady mode, and then set the time step in the run calculation section. Let us know if you need more information. 😉

  2. Jacob E.

    I didn’t understand how to convert 3D elements into polyhedral elements. Where is the convert tab?

    • melika maysoori

      Do not worry. I’m gonna explain u. :). To convert the entire domain of your mesh, use the Mesh / Polyhedra / Convert Domain menu. ( In fluent software). But note that conversion of a mesh to polyhedra only applies to 3D meshes that contain tetrahedral and/or wedge/prism cells. Hexahedral cells remain unchanged during conversion.

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