How to Download and Use the VOF Model Tutorial for ANSYS Fluent
The VOF model is a multiphase modeling technique that can simulate the flow of two or more immiscible fluids with a sharp interface. It is useful for applications such as inkjet printing, bubble columns, and droplet formation. In this article, we will show you how to download and use the VOF model tutorial for ANSYS Fluent, a popular computational fluid dynamics (CFD) software.
Downloading the VOF Model Tutorial
The VOF model tutorial is available in the ANSYS Fluent documentation, which can be accessed online or offline. To download the tutorial files, follow these steps:
Go to the ANSYS Product Documentation page and select your product version.
Under the ANSYS Fluent section, click on Tutorials.
Scroll down to the Multiphase Flow Models category and click on Using the VOF Model.
Click on the Download Zip File button and save the file to your desired location.
Extract the zip file to a folder. You should see four files: vof.c, vof.msh, vof.pdf, and vof.udf.
Using the VOF Model Tutorial
The VOF model tutorial demonstrates how to set up and solve a transient problem using the pressure-based solver and VOF model in ANSYS Fluent. The problem considers the flow of ink as it is ejected from the nozzle of a printhead in an inkjet printer. The tutorial consists of six steps:
Step 1: Grid. In this step, you will read and check the mesh file (vof.msh) that contains the geometry and grid for the problem.
Step 2: Models. In this step, you will select the solver settings and enable the VOF model for multiphase flow.
Step 3: Materials. In this step, you will define the properties of the two fluids (air and ink) using the material database.
Step 4: Boundary Conditions. In this step, you will specify the boundary conditions for the problem, including a time-dependent velocity profile for the ink inlet using a user-defined function (UDF).
Step 5: Solution Methods and Initialization. In this step, you will choose the solution methods and initialize the solution.
Step 6: Solution Monitoring and Postprocessing. In this step, you will monitor the solution convergence and examine the flow and interface of the two fluids using volume fraction contours.
The detailed instructions for each step are given in the tutorial document (vof.pdf). You can also refer to the source code (vof.c) and UDF file (vof.udf) for more information on how to implement a time-dependent boundary condition using a UDF.
In this article, we have shown you how to download and use the VOF model tutorial for ANSYS Fluent. This tutorial can help you learn how to set up and solve a transient multiphase flow problem using the VOF model in ANSYS Fluent. We hope you find this tutorial useful and informative. 061ffe29dd