Preliminary Wave Analysis of Unsteady Subway Vehicle Aerodynamics.

摘要

The report was prepared under the Institute for Rapid Transit (IRT) project, 'Ventilation and Environmental Control in Subway Rapid Transit Systems,'and is one of many such reports leading to the final product--a 'Subway Environmental Desing Handbook.' Trains moving in tubes experience drag forces which are orders of magnitude higher than when in free air. The report studies such forces and their dependent parameters to determine the tube optimal ventilation design as well as the moving and braking powers. The solutions obtained in this work are to be considered only as a first approximation to the unsteady confined vehicle problem. (Author)