Computational Fluid Dynamics

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In this fast moving world the need to control and predict the movement of fluids is a common problem. Scientists have worked hard on this are an so far the study of this area is called fluid dynamics and the systems that are studied range from weather patterns, through aircraft aerodynamics to the way blood circulates.


Due to the advancements in almost every field CFD and its application is a rapidly developing discipline due to the continuous development in the capabilities of commercial software and the growth of computer power. The system has been a success and therefore CFD is already widely used in industry and its application is set to spread.
We have learned that the physics which governs fluids is relatively simple; the laws of motion and thermodynamics. However, for designing a system of this scope the solutions are very complex and this makes analytical methods largely unusable for industrial applications. An approach to solve such complex dilemmas is to replace the problem with a number of smaller less complex problems. With the advent of computers this approach became practical and in the late 1960s Computational Fluid Dynamics was born.
What does the CFD do To explain the idea behind CFD lets cite an example of an airplane. As the plane moves along the air must move out of its way. This means that the airplane has to make its way shearing through the wind. The way in which the air flows depends on the plane's shape. The flow can be smooth but more likely it will contain vortices, shockwaves and other disturbances. We will have to consider the air as the fluid present. To model the behavior of the fluid the volume is split into many smaller sub-volumes, called a mesh. ...
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