Abstract
Aerodynamics plays an important role inimproving automobile fuel econonw and vehicular motion, and wind tunnel tests are performedwith high frequency to quantitatively evaluate the aerodynamic characteristics of automobiles.This review describes the trendof the aerodynamic dragreduction with tiThe correlation testsof the full-scale wind ttmnelsand the coast-dorm testsinwindyme.environments are discussed in order to predict correctly the aerodynamic drag coefficients. The recent research work on cross-vdnd hazards to automobiles, especially cross-wind characteristics and dynamic behavior of automobiles, are also reviewed.With the rent increaseincomputer speed and capacity, computational fluid dynamics, developed mainlyecin thefieldsofaeronautical and aerospace engineerings, is gradually finding applications inaerodynamics. Several examples of computer simulations by the panel method and the k-e.automotiveturbulence model are shown for the complex flow around a vehicle.
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