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.
Remember that the air has 23 % oxygen, for this reason, O2 = 0.23, CO2 = 0.0 and H2O = 0.0, the initial temperature is 300 °K and the air velocity is 1 m/s.
In this tutorial you will learn to simulate Multi-Species (Smokestack) in 2D using ANSYS CFX. You can download the mesh from this link.
Convert Photography to Mesh using Gmsh
Learn how to generate a CFD mesh from any photograph using the Gmsh mesher.
Ansys CFX Tutorial | Flow through Porous Media
In this tutorial you will learn how to simulate a Flow through Porous Media using Ansys CFX.
FWe share a tutorial about Multiphase flow using ANSYS Fluent.
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