Ansys Fluent

[HOW TO] Ansys Fluent [TUTORIAL PDF]

This article is a tutorial on the basics of Ansys Fluent. 

Ansys Fluent is a suite of computational fluid dynamics analysis software for simulating gas, liquid and multiphase flows, heat transfer and various phenomena associated with these flows. It can be used to compute thermodynamic properties such as pressure, temperature, density, flow velocity, viscosity etc.

It can be used to simulate any type of flow problem - from fully developed turbulent flow in ducts to laminar flow over an aircraft wing. The tutorials are designed to cover the basics of this software with some simple examples.

Basics of Ansys Fluent

Before we delve into the basics of Ansys Fluent, we need to understand what computational fluid dynamics (CFD) is.

CFD is the numerical solution of the Navier-Stokes equations and the Reynolds-Averaged Navier-Stokes (RANS) equations. These equations are complex, but the general idea is that CFD will help model fluid flow in a numerical way.

The Navier-Stokes equations are complex equations that have been solved in the past through analytical solutions, which are not always accurate. As technology has advanced, CFD analysis is being used to solve these complex equations. This is done by breaking them down into smaller problems, which are then solved numerically.

CFD analysis can be performed on 3-D models of fluids. This is done through the use of Computational Fluid Dynamics software, which can be either commercial or open source software.

There are typically two types of CFD software:

Introduction to Fluent Tutorials

The tutorials are designed to cover the basics of this software with some simple examples. The tutorials are divided into four parts - the first part is on the installation of fluent, the second part covers the basics of fluent, the third part covers turbulence modelling, and the fourth part is on real-world applications.

The first tutorial covers the basic terminology of Ansys Fluent and its graphical user interface. The second tutorial covers basic computational requirements. The third tutorial covers turbulence modelling, and the fourth tutorial covers real-world applications.

Ansys Fluent is a powerful computational fluid dynamics software which can be used to simulate gas, liquid, and multiphase flows. It can be used to compute thermodynamic properties such as pressure, temperature, density, flow velocity, viscosity etc. 

It can be used to simulate any type of flow problem - from fully developed turbulent flow in ducts to laminar flow over an aircraft wing. 

The tutorials are designed to cover the basics of this software with some simple examples. The tutorials are divided into four parts - the first part is on the installation of fluent, the second part covers the basics of fluent, the third part covers turbulence modelling, and the fourth part is on real-

Getting Started with Fluent

The tutorials are designed to cover the basics of this software with some simple examples.

Fluent Tutorial #1 - Basic Setup

Open Fluent

Enter values in the Basic Setup dialog box - the tutorial is for a pipe flow problem.

Set the boundary conditions in the Boundary Conditions dialog box.

Set up your mesh using the Meshing dialog box.

Set up your fluid properties using the Fluid Properties dialog box.

Set up your Initial Conditions dialog box.

Build and run the problem and see the results in the Results tab.

Boundary Conditions in Fluent

In this tutorial, we will learn about the Boundary Conditions in Fluent. Fluent has many boundary conditions, so let's take a look at some of them.

In this example, we'll be using the 2D, Steady, Incompressible, Inverse Gas Law Model.

In this model, you'll find a tab called "Boundary Conditions". To find the boundary conditions, click the arrow to the left of the tab and you'll see a list of boundary types. To edit a boundary type, click on it.

In the Boundary Conditions area, you'll see a list of different types of boundary conditions that you can choose from. You can choose from a variety of different types of boundary conditions.

Solving the flow problem in fluent

In this example, we will solve the following problem:

The right-hand wall of a round pipe of radius R = 100 mm is subjected to a constant pressure of P = 10 kPa.

The left-hand wall of the pipe is subjected to a constant temperature of T = 300 K.

The cross-sectional area is A = 25,000 mm2.

The flow in the pipe is steady.

The flow is laminar.

What is the velocity distribution in the pipe?

Solution:

-Create a new project and a new problem.

-Create a geometry with a pipe and a wall. 

-Create a boundary condition for pressure and temperature on the right and left walls respectively. 

-Create a boundary condition for laminar flow on the pipe's surface. 

-Specify the dimensions of the pipe and solve the problem. 

-View the velocity distribution on the flow surface.

Different types of flow problems

There are three types of flow problems that one might encounter in their day-to-day work - laminar, turbulent and transient.

Laminar flow problems are those in which the flow velocity is constant in all directions. The velocity depends on the pressure gradient and viscosity of the fluid.

Transient flow problems are those in which the velocity varies with time. The velocity is dependent on the pressure gradient, viscosity, density, heat transfer coefficient etc.

Turbulent flow problems are those in which viscous effects are dominant. The velocity fluctuates randomly over time.

The properties of the flow depend on the Reynolds number, which is a measure of how strong turbulence is in the flow. Flow can be laminar, turbulent or transitional between the two states.

Conclusion

The tutorials are designed to cover the basics of this software with some simple examples. If you are new to Ansys Fluent, these tutorials will help you get started. Read on to learn more about the tutorials and download the PDF now!