Discussion
Which technique is used to develop vehicle aerodynamics?
Answer: C
Full scale and model wind tunnels with rolling roads reproduce the ground effect that a static floor would misrepresent, and computational fluid dynamics allows many configurations to be assessed before any model is built. The two are complementary, with the computation guiding the tunnel programme and the tunnel validating the computation. Road testing confirms the result but cannot efficiently explore alternatives, and towing tanks are used for marine rather than automotive work.
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