Advantages of Aerodynamics for Modern Performance Cars

3452 Words Sep 27th, 2010 14 Pages
Advantages of Aerodynamics for Modern Performance Cars

Advantages of Aerodynamics for Modern Performance Cars

Thesis: Aerodynamics, the effects of air flow over surfaces, is an indispensable element for modern cars' efficiencies, both economics and performance related, because aerodynamics helps to decrease the dragforce, makes cars more stabilized and gives a chance of reducing fuel consumption.

I. Performance A. Aerodynamics Basics 1. Theory a. Air flow b. Pressure and forces 2. Cornering a. Drag b. Dawnforce 3. Modeling and testing a. CFD b. Wind tunnels 4. Coefficient of drag a. speed b. efficiency B. Aerodynamics Parts 1. Front - Naca Ducts 2. Rear a. Side skirts
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Another way to increase downforce with the least increase in drag is ‘ground effect’. With lowering the car to the ground and using under body profiles, ground effect could easily be created. John Owen states, “By accelerating the air away under the car, you get the same effect as a huge vacuum cleaner sucking the car to the floor” (”What Do We Understand By Aerodynamics In F1”, n.d., para. 11). The secret is hidden in cleverly designed parts. It is explained in the F1 Official Website that in 2007, front rim shields of Ferrari leads the heated air coming from brakes under the car. In this way hot air accelerates gas molecules to remove quickly from under the car via diffuser and this serves extra downforce, higher stability and developed aero balance (Britain Grand Prix, July 07, 2007, para. 1). On account of all these facts, better performance comes up with more downforce supported by lower frontal area, streamlined geometry and under body surfaces. Principles of fluid dynamics are modelled depending on the equation of Bernoulli. By developing super computers fluid analyses, which give nearly the same results with the real world, of much more complex 3D computer models can easily be analysed today. Aesthetically drawn sketch designs on paper are shaped on computers by using Computational Fluid Dynamics, in short CFD programs, such as Fluent and Ansys. Although expensive and requiring advanced
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