Tuesday, September 21, 2021

How to..easy mesh CFD models in Ansys Workbench (size and type of finite element)

 In many analyzes, we want our mesh not to be too large and at the same time fit into the general rules of CFD discretization. Then it is worth using the definition of the size of the finite elements in the zones of the geometric model that are of interest to us. The Element Size function is used primarily for this type of definition.

how to quick mesh in ansys workbench
Discretized model with general CFD rules 

Monday, September 20, 2021

How to... add and additional part to finished geometry in Ansys Design Modeler

When performing numerical analyzes, our models are often incomplete. Then we have to do a few activities consisting in either modifying the existing geometry or adding the missing element. In today's post, I would like to show you how to easily add an additional missing element in Design Modeler.

How to add additional part to geometry in ansys workbench
How to add additional part to geometry in Ansys Design Modeler 

Thursday, September 16, 2021

How to... use GPU on Ansys Fluent

 In an earlier post, I presented how to configure CAE calculations using the GPU in Ansys Mechanical. Today I would like to show you how to configure the use of a graphics card in Ansys Fluent. First of all, you need to correctly configure the proportion of the use of the amount of CPU to GPU depending on the HPC license you have.

how to use gpu in ansys fluent
How to properly use GPU in Ansys Fluent 

Wednesday, September 15, 2021

How to... use GPU on Transient / Static Thermal Ansys Workbench

Nowadays, most of the complicated CAE calculations and deep learning are done with the GPU. In Ansys software it is possible to use the computing power of graphic cards in Fluent and Ansys Mechanical. In this post I will show you how to enable GPU acceleration in Transient and Static Thermal.

how to turn on gpu mode in ansys workbench
How to use GPU in Ansys Mechanical 

Tuesday, September 14, 2021

How to... export point cloud data from different time step in Ansys Fluent

A common problem in numerical modeling is the correct export of the output data and their processing. Today I would like to show you how to export data for Point Cloud from several time steps of transient analysis. This guideline applies to both Fluent and CFX.

how to export data from fluent and cfx
Time step selector in Postprocessing (Fluent, CFX)

Thursday, September 9, 2021

How to define... transient table data for BC's in Ansys CFX

In the previous post, I showed how to define and load an input table into any boundary condition in Fluent. Today I would like to show you the simplified transient table data definition path for Ansys CFX. As far as the procedure comparison itself is concerned, it seems that the definition of tables in CFX compared to Fluent is easier and more intuitive.

how to define transient table data in ansys cfx
Transient table data in Ansys CFX


Sunday, September 5, 2021

How to... define transient table to BC's in Ansys Fluent

 It often happens in CFD modeling that our boundary conditions change over time. Then there is a need to make the input variable dependent on time. For example, on Inlet, we want the gas temperature to increase over time in the transient analysis. For this type of simulation, a very useful option in Fluent is to define transient table data.

how to create input table in fluent ansys
Example of transient table in Ansys Fluent 

Saturday, September 4, 2021

How to... model two gases flow on Ansys Fluent

Often, in CFD analysis modeling, we deal with more than one gas. Then in Ansys Fluent we follow the path of modeling using Multiphase. This is the right path when we need to define phase transitions. However, if we want to model a simple analysis with two gases that do not interact significantly with each other, then we can use the Species model (figure below).

how to model two gases flow ansys fluent
Species Model in Ansys Fluent 

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