Bullet (HPBT) movement CFD Simulation by Dynamic Mesh

$210.00 Student Discount

  • The problem numerically simulates the HPBT Bullet movement after firing using ANSYS Fluent software.
  • We design the 2-D model by the Design Modeler software.
  • The Mesh is modeled by ANSYS Meshing software, and the element number equals 13,040.
  • We perform this simulation as unsteady (Transient).
  • The Dynamic Mesh method is used to simulate the movement process.

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.


Bullet (HPBT) movement CFD Simulation by Dynamic Mesh, ANSYS Fluent Training


The hollow point boat tail bullet is primarily a rifle used for hunting big game at long range. In ANSYS Fluent Software, there are different ways to model moving objects. The dynamic mesh is a model in which the elements of the domain reform perish and get generated over time. This model is more tangible than stationary models in which the objects are fixed, and the flow moves.

In this project, a 2D HPBT  ammo in a rectangular domain is designed while the bullet’s velocity is 2850 ft/s. The Dynamic Mesh model simulates the movement of the bullet in which the elements are meshing every time step. The compressibility of the air over the bullet is modeled using the Density-Based option which uses ideal gas material to define the air properties.

There is a bullet with a length of 21mm and a height of 7.92mm in positive X and Y directions. Design Modeler software is used to create the geometry of the solution. ANSYS Meshing software is used for generating meshes, and the elements are all triangles (unstructured) due to the ability of this model to remesh triangle elements. Plus, The number of elements is 13,040.

This CFD project is the 11th episode of the ANSYS Fluent General Training Course.

Methodology: HPBT Bullet (Dynamic Mesh)

The simulation is Transient (unsteady) in order to capture the behavior of fluid over time. The Density-based solver type is used due to the compressibility of the working flow. The speed of the bullet is 2850ft/sec which is exactly equal to the Mach number of 2.531.

That’s a good reason for us to select the ideal gas option for the density of the air to model its compressibility. The gravitational acceleration effects are ignored. Furthermore, The Dynamic Mesh module is employed.


At the end of the solution process, two-dimensional contours of pressure, temperature, and velocity are obtained. Also, the elements are visible at every five time-steps, deforming at the start of each time step.

unlike other models available in ANSYS Fluent software, the bullet is moving, and the air is stationary. The motion of the air pressure and velocity behind the bullet which is formed due to the shock wave, as a result of breaking the sound barrier is considerable. Related animation to the bullet’s movement with the change of velocity in the domain is exhibited.


There are no reviews yet.

Leave a customer review

Your email address will not be published. Required fields are marked *

Back To Top
Whatsapp Call On WhatsApp