**CFD Tutorial Part 1: Introduction**

**-ANYSY 15.0 for Beginner (Window Version)**

** By: Herdawatie Abdul Kadir (PhD Student)**

In this tutorial, I will explain briefly the basic of CFD before we go to the ANSYS 15.0 (Fleuent tutorial). First you need to undertand what is CFD and ANSYS

**What is CFD ?**

*CFD stands for Computational Fluid Dynamics used to solve and analyze impact of fluid flows on product using Numerical method. There are several disretization methods such as(1) **Finite element method** (2) *

*Finite difference method** (3) **Spectral element method** (4) **Finite volume method** (5) **High-resolution discretization schemes**.*

There several CFD Package available such as :

*1.***OpenFOAM** : *http://www.openfoam.com*

**2.****OpenFlower: ***http://sourceforge.net/projects/openflower*

**3.****FLASH:***http://flash.uchicago.edu*

**4.****GADGET***: **http://www.mpa-garching.mpg.de/~volker/gadget*

**5.****ZEUS-MP: **

**HYDRA**: http://hydra.mcmaster.ca/hydra

**COMSOL Multiphysics**: http://www.comsol.com/products/multiphysics

**CFDRC**:: http://www.cfdrc.com

**STAR-CD**: http://www.cd-adapco.com

**FLOW3D**: http://www.flow3d.com

**11.****ANSYS CFX : Solver : Finite Element ***http://www.ansys.com/Products/Simulation+Technology/Fluid+Dynamics/Fluid+Dynamics+Products/ANSYS+CFX*

**12.****ANSYS Fluent : Solver : Finite Volume **

http://www.ansys.com/Products/Simulation+Technology/Fluid+Dynamics/Fluid+Dynamics+Products/ANSYS+Fluent

**13.****ANSYS ICEM CFD : **http://www.ansys.com/Products/Other+Products/ch.ANSYS+ICEM+CFD.it

**14.****ANSYS CFD-Flo : ****http://www.ansys.com/Products/Simulation+Technology/Fluid+Dynamics/Fluid+Dynamics+Products/ANSYS+CFD-Flo**

Next, the selection of which CFD package to used depends on the type of problem you want to solve . We will focus only on ANSYS in this tutorial. ANSYS is a computational fluid dynamics (CFD) simulation software that allows prediction of fluid flows on product with confidence an accuracy throughout design and manufacturing as well as during end use. There are two famous ANSYS bundle (a) ANSYS CFX (b) ANSYS Fluent

*“ANSYS CFX is a robust, flexible general-purpose computational fluid dynamics software package used to solve wide-ranging fluid flow problems of all levels of complexity within the Workbench environment. It offers a comprehensive range of physical models that can be applied to a broad range of industries and applications, with extensive capabilities for customization and automation”[2].*

*“ANSYS Fluent is a powerful and flexible general-purpose computational fluid dynamics software package used to model flow, turbulence, heat transfer, and reactions for industrial applications. The physical models allow accurate CFD analysis for a wide range of fluids problems - from airflow over an aircraft wing to combustion in a furnace. ANSYS Fluent is integrated into ANSYS Workbench”[2].*

*Different of ANSYS CFX and ANSYS Fluent ? *

1) CFX more user friendly than Fluent

2) Fluent is the more famous than CFX

3) ANSYS FLUENT product offers several solution approaches

-density-, segregated- and coupled-pressure-based methods.

4) ANSYS CFX software focuses on one approach to solve the governing equations of motion

-coupled algebraic multigrid.

5) ANSYS CFX use Finite Element Slover and Fluent use Finite Solver** **

Table 1-1 Comparison between FLUENT and CFX[3]

**Reference(s):**

- http://www.mallett.com/ansys-products/fluid-dynamics-solutions/
- ANSYS , Fluid Dynamics : http://www.ansys.com/Products/Simulation+Technology/Fluid+Dynamics
- http://libback.uqu.edu.sa/hipres/indu/indu10725.pdf, pp. 9-11