(a) Set the Scale Factors for both X and Y to 0.129. To use this mesh for a 20 mm barrel in this tutorial, you need to scale it accordingly. This mesh was created for a 155 mm barrel. Grid −→ Reorder −→Domain Note: Perform this operation until the band width reduction is in the order of 1.0.
FLUENT will read the file and report the progress in the console window. Copy the mesh file, and the UDF source files, aneos.c and six dof property.c, to your working directory. The Abel-Nobel equation of state is implemented using the user-defined real gas model. In this case, only the pressure forces are considered, while drag and mechanical friction are neglected. The motion of the projectile is computed using a UDF based on FLUENT’s Six Degree of Freedom UDF. The gas inside the chamber is patched at a high pressure of 3000 atm and a temperature of 2700 K, and the projectile is released.
Problem Description A projectile weighing 120 grams is initially at rest inside a 20 mm caliber barrel. An additional 43.5 hours for the calculations until the projectile leaves the field of view.An additional 6 hours for the calculations up to the uncorking of the projectile.Note: Assuming that you are using a single processor machine with a clock speed of 2 GHz, this tutorial will take: If you are not, please review Section 9.6: Dynamic Meshes in the FLUENT User’s Guide. You should be familiar with the dynamic mesh model. Some of the basic steps in the setup and solution procedures will not be shown explicitly. Prerequisites This tutorial assumes that you are familiar with the FLUENT interface and have completed Tutorial 1 from the FLUENT 6.1 Tutorial Guide. Run an unsteady calculation for the problem using coupled solver and axisymmetry.Set up the moving zones and hook the UDF in FLUENT.Compile a UDF for the projectile motion and the Abel-Nobel real gas law.Read a mesh file for performing an MDM calculation.The problem involves a projectile moving through a barrel and out of the muzzle. Moving Deforming Mesh (MDM) using the layering algorithm.Introduction The purpose of this tutorial is to illustrate how to set up and solve a problem using the following two features in FLUENT. Tutorial: Projectile Moving Inside a Barrel
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