**CFD-Training** is a blog dedicated to **CFD** (**C**omputational **F**luid **D**ynamic) and more specifically to open-source open source such as the **OpenFOAM** toolbox code. The goal of CFD-Training is to provide free resources and tutorials (our articles) as well as more advanced non-free content (visit the cfd-shop).

## CFD-Training

## Numerical simulation

CFD (Computational Fluid Dynamic) is a set of numerical methods used to solve the Navier-Stokes equation. Many processes or systems in industry and research involve a fluid (heat exchangers, ship, mixers …). The development of CFD codes and softwares is growing since the 1980s. Numerical simulation has become today a major tool for the engineer when studying a system. During the design of the process, numerical simulation can limit the use of prototyping phases (often expensive). In addition, with the development of computing powers and optimization algorithms, the engineer can determine and refine his design to achieve a performance objective (heat exchanger efficiency, hydrodynamic resistance of a boat hull, homogenization of a mixer application…).

There is a large number of software and CFD codes. Each with its own strengths and weaknesses. This blog is especially dedicated to the use of OpenFOAM® open-source code. The development of OpenFOAM® (**O**pen **F**ield **O**peration **A**nd **M**anipulation, originally called FOAM) began in the late 1980s at Imperial College London by Henry Weller. Today the code is distributed by **ESI-OpenCFD** (www.openfoam.com) and **OpenFOAM Foundation** (http://www.openfoam.org). A third version of the code named **foam-extend** is also distributed by **Wikki Ltd** (Hrvoje Jasak) https://sourceforge.net/projects/foam-extend/.

### Sizing

### Optimization

### Robustness

### Cost reduction

*CFD numerical model of a propeller in open-water – velocity field
*

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