Rotation of a Cube Considering Sloshing Simulation, ANSYS Fluent Training

$240.00 Student Discount

  • The problem numerically simulates the Rotation of a Cube Considering Sloshing using ANSYS Fluent software.
  • We design the 3-D model with the Design Modeler software.
  • We mesh the model with ANSYS Meshing software, and the element number equals 168367.
  • We perform this simulation as unsteady (Transient).
  • We use the VOF Multiphase model to define water and air.
  • We use a UDF to define the variable angular velocity of the cube’s rotation.


Special Offers For Single Product

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.



In this project, the rotation of a cube containing water and air is investigated by ANSYS Fluent software. The cube rotates around the Y-axis with variable angular velocity. The cube’s distance to the rotation axis is equal to 1 m.

The angular velocity of rotation varies with time as the function 0.252273*sin(2.53*time+36800).

The fluid domain geometry is designed in the Design Modeler, and the computational grid is generated using Ansys Meshing. The mesh type is unstructured, and the element number is 168367.

Cube Methodology

The interaction of water and air inside the cube is modeled using the Volume of Fluid (VOF) multiphase approach. VOF multiphase approach is considered since it is an efficient and precise approach for capturing the interface location between phases.

A User Defined Function (UDF) defines the variable angular velocity of the cube’s rotation. Also, the solver is Transient.

Cube Conclusion

This project investigates the simplified sloshing effect in fluid containers where a situation similar to the one studied here can occur due to the acceleration of the carrier vehicle.

Results show that pressure on the bottom surface of the cube varies with radial distance to the OO line. Pressure increases as the position are away from the OO’s line.


  1. Zelda Sauer

    How does the simulation handle the interaction between the water and air in the cube?

    • MR CFD Support

      The simulation uses a Volume of Fluid (VOF) model to handle the multiphase interaction between the water and air. This model can accurately capture the interface between the two phases.

  2. Antonina Keeling V

    How is the rotation of the cube modeled in this simulation?

    • MR CFD Support

      The rotation of the cube is modeled using a dynamic mesh with a user-defined function (UDF) that specifies the rotational motion. This allows for a realistic representation of the cube’s rotation.

  3. Kenny Klocko II

    How is the turbulent flow in the cube modeled?

    • MR CFD Support

      The turbulent flow in the cube is modeled using a turbulence model, such as the k-epsilon or k-omega model. This can accurately capture the complex flow patterns inside the rotating cube.

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