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CFD.NINJA – ANSYS CFD

CFD.NINJA is a group founded in 2014, since then we have been dedicated to the research and dissemination of topics related to Computational Fluid Dynamics (CFD) for which we use various CFD simulation software such as ANSYS FLUENT, ANSYS CFX, ANSYS MESHING, ANSYS ICEM CFD, OpenFoam, DesignModeler, SpaceClaim, Rocky DEM, Autodesk Inventor, Ensight, etc.
We invite you to subscribe to our youtube channel, Facebook page, Twitter and Instagram where we share monthly ANSYS CFD tutorials. Eventually, we do a giveaway for CFD books and gift cards where our subscribers participate.

 

 

More than 150 Free Tutorials using Ansys Fluent, Ansys CFX, Ansys Meshing, DesignModeler, SpaceClaim, Autodesk Inventor, ICEM CFD.

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CFD.NINJA Tutorials

We have a large number of tutorials that we have developed over several years and we make them available to you. In many of them, you can download files, geometries, and meshes. Soon we will be uploading more tutorials for experts and beginners of ANSYS CFD. We hope you can share this website with your friends and colleagues.

Source: Ansys
Computational fluid dynamics (CFD) is a tool with amazing flexibility, accuracy and breadth of application. But serious CFD, the kind that provides insights to help you optimize your designs, can be out of reach unless you choose your software carefully. To get serious CFD results, you need serious software. Ansys CFD goes beyond qualitative results to deliver accurate quantitative predictions of fluid interactions and trade-offs. These insights reveal unexpected opportunities for your product — opportunities that even experienced engineering analysts can miss.

Ansys Fluent Tutorials

Source: Ansys

Fluent software contains the broad, physical modeling capabilities needed to model flow, turbulence, heat transfer and reactions for industrial applications. These range from air flow over an aircraft wing to combustion in a furnace, from bubble columns to oil platforms, from blood flow to semiconductor manufacturing and from clean room design to wastewater treatment plants. Fluent spans an expansive range, including special models, with capabilities to model in-cylinder combustion, aero-acoustics, turbomachinery and multiphase systems.

Ansys Fluent – Axial Fan

An axial fan is a type of fan that causes gas to flow through it in an axial direction, parallel to the shaft about which the blades rotate. The flow is axial at entry and exit. The fan is designed to produce a pressure difference, and hence force, to cause a flow...

Ansys Fluent – Heat Transfer & Counter Flow

First we need to understand what the differences are between counter flow and parallel flow. As a brief description; the term refers to the relationship between the flow directions of the hot and cold fluids.

Ansys Fluent – Compilate UDF / Solution to “nmake” error

The general procedure for compiling a UDF source file and building a shared library for the resulting objects, and loading the compiled UDF library into ANSYS FLUENT using the graphical user interface (GUI) is as follows.

Ansys Fluent – Centrifugal Pump (Cavitation)

Source: MichaelSmithEngineers A centrifugal pump is a mechanical device designed to move a fluid by means of the transfer of rotational energy from one or more driven rotors, called impellers.  Fluid enters the rapidly rotating impeller along its axis and is cast out...

Ansys CFX Tutorials

Source: Ansys

Ansys CFX is a high-performance computational fluid dynamics (CFD) software tool that delivers reliable and accurate solutions quickly and robustly across a wide range of CFD and multiphysics applications. CFX is recognized for its outstanding accuracy, robustness and speed when simulating turbomachinery, such as pumps, fans, compressors and gas and hydraulic turbines.

Ansys CFX – Multi-Species (Smokestack)

Please add this setup about Initialization, right click on Flow Analysis > Insert > Global Initialization then double click on Global Initialization and modify as it appears in the image below.

BladeGen + Turbogrid + Ansys CFX – Centrifugal Pump

A centrifugal pump is a mechanical device designed to move a fluid by means of the transfer of rotational energy from one or more driven rotors, called impellers.

Ansys CFX – Heat Transfer Fluid/Solid

Heat transfer is the process of transfer of heat from high temperature reservoir to low temperature reservoir. In terms of the thermodynamic system, heat transfer is the movement of heat across the boundary of the system due to temperature difference between the system and the surroundings.

Ansys CFX – Heat Exchanger (Shell & Tubes)

A heat exchanger is a device used to transfer heat between two or more fluids. The fluids can be single or two phase and, depending on the exchanger type, may be separated or in direct contact.

Ansys CFX – Compressible Flow

Ansys CFX – Compressible Flow

Source: Ansys Compressibility effects are encountered in gas flows at high velocity and/or in which there are large pressure variations. When the flow velocity approaches or exceeds the speed of sound of the gas or when the pressure change in the system ( ) is large,...

Ansys CFX – Heat Transfer through a Pipe

Ansys CFX – Heat Transfer through a Pipe

Source: NASA Thermodynamics is a branch of physics that deals with the energy and work of a system. Thermodynamics deals only with the large scale response of a system that we can observe and measure in experiments. In aerodynamics, we are most interested in the...

Ansys Meshing Tutorials

Source: Ansys

Meshing is an integral part of the engineering simulation process where complex geometries are divided into simple elements that can be used as discrete local approximations of the larger domain. The mesh influences the accuracy, convergence and speed of the simulation. Furthermore, since meshing typically consumes a significant portion of the time it takes to get simulation results, the better and more automated the meshing tools, the faster and more accurate the solution.

Ansys provides general purpose, high-performance, automated, intelligent meshing software which produces the most appropriate mesh for accurate, efficient multiphysics solutions — from easy, automatic meshing to highly crafted mesh. Methods available cover the meshing spectrum of high-order to linear elements and fast tetrahedral and polyhedral to high-quality hexahedral and Mosaic. Smart defaults are built into the software to make meshing a painless and intuitive task delivering the required resolution to capture solution gradients properly for dependable results.

Ansys Meshing – Multizone + Inflation + Face Meshing

You can set the Use Automatic Inflation control so that inflation boundaries are selected automatically depending on whether or not they are members of Named Selections groups.

Ansys Meshing – Body of Influence

The Body of Influence option is available in the Type field if you selected a body and Use Adaptive Sizing is set to No.

Ansys Meshing – Local Sizing

The Sizing options provide greater control over the following properties:
Mesh growth (transition) between small and large sizes based on a specified growth rate

Ansys Fluent Tutorial | Heatsink

In this tutorial, you will learn how to simulate a Heatsink using Ansys Fluent. In this first video, you will see how to create the geometry and the mesh using DesignModeler, Ansys Meshing and Ansys Fluent.

Ansys Meshing – Match Control

Ansys Meshing – Match Control

Source: Ansys The Match Control matches the mesh on two or more faces or edges in a model. The Meshing application provides two types of match controls—cyclic and arbitrary. The Match Control is supported for the following mesh methods: Volume Meshing: Sweep Patch...

Ansys Meshing – Body of Influence

Ansys Meshing – Body of Influence

Source: Ansys The Body of Influence option is available in the Type field if you selected a body and Use Adaptive Sizing is set to No. Using this option, you can set one body as a source of another body (that is, a Body of Influence). The Body of Influence will...

Ansys Meshing – Sphere of Influence

Ansys Meshing – Sphere of Influence

Source: Ansys The Sphere of Influence option is available in the Type field after you select an entity such as a body, face, edge, or vertex. If the Sphere of Influence is scoped to a body or vertex, the Sphere of Influence affects the entire body regardless of sizing...

Ansys DesignModeler Tutorials

Ansys DesignModeler – Import from Autodesk Inventor to ANSYS Design Modeler directly

Use the Open command to open files created in any supported format. Use the Save As command to export parts, assemblies, drawing sheets, and 3D markups to formats read by other applications. Your license type determines which of these actions are supported.

Ansys DesignModeler – Splice Material

Slices bodies into multiple pieces. Active bodies in the Slice operation will be automatically frozen. This option is available when at least one body is present in the model.

Ansys DesignModeler – Manipulating Autodesk Inventor Geometry

The ANSYS DesignModeler application is designed to be used as a geometry editor of existing CAD models.

Ansys DesignModeler – Offset Surface

The Offset function allows you to create a set of lines and arcs that are offset by an equal distance from an existing set of “straight” lines and “circular” arcs. The original set of lines and arcs must be connected in a simple end-to-end fashion and can form either an open or closed profile.

Ansys DesignModeler – Thin/Surface

Ansys DesignModeler – Thin/Surface

Source: Ansys he Thin/Surface feature has two distinct applications: Create thin solids Simplified shelling The three selection tools are: Faces to Remove: selected faces will be removed from their bodies. Faces to Keep: selected faces will be kept, while unselected...

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