An Analytical Procedure for Calculating the Aerodynamic Performance of Vehicles Traveling in Tunnels.

摘要

A numerical method is presented for determining aerodynamic drag and power requirements of a vehicle operating in a tunnel. The theory and numerical techniques used are discussed in detail. Low vehicle speed (<100 m.p.h.) results are presented and shown to compare favorably with experimental and other theoretical data. High speed results for operation in long tunnels over a range of tunnel/vehicle geometries are also given. These results can be used for preliminary design applications.