What is CFD?

Most problems related to fluid mechanics can only be described in complicated mathematical form using a system of mass and energy balances.  CFD stands for Computational Fluid Dynamics, a modern branch of science developed to solve and analyze these complicated equations with the help of numerical methods and algorithms.

CFD is used to simulate various types of interactions between fluids and gases, and to carry out the several millions of calculations involved in this complicated task. CFD is a constantly evolving field of science, making it an active topic in the academic community.  Through close association with Budapest University of Technology and Economics, CFD.HU has access to the most recent academic advancements in CFD coding.  Therefore, our company can ensure the highest degree of precision currently available on the market.

Computational Fluid Dynamics transforms the computer into an imaginary laboratory, in which development ideas and cost-cutting plans can be easily investigated. Inexhaustible applications are available to solve the complex problems of fluid mechanics. All Formula 1 teams have a CFD laboratory, where they strive towards perfect geometry by minimizing resistance factors, and maximizing drag force. With these calculations, every year at the races a revolutionarily new geometry can be witnessed.

Methodology:

CFD simulations involve using always the same steps to reach the solution. These are the following:

1. Preprocessing:

• Identification of the problem's geometry (physical borders).
• Dividing the volume of the fluid into discrete cells thus creating a net. In general, this net is not even.
• Defining the physics of the model - for example motion, enthalpy- and the energy equations.
• Defining the boundary conditions. The features of the fluid, the description of the characteristics of flow at the borders of the geometry.

2. Solver: The simulation begins, and the software interactively solves the equations either in a permanent or a transient state.

3. Post-processing: Finally, with the aid of the postprocessor we can analyze and depict our results.