A new method for a numerical investigation of windproof performance of porous windbreaks for high-speed railways based on a physical model

Abstract

Following the fundamental characteristics of the porosity windbreak, this study suggests a new numerical investigation method for the wind field of the windbreak based on the porous medium physical model. This method can transform the reasonable matching problem of the porosity and windproof performance of the windbreak into a study of the relationship between the resistance coefficient of the porous medium and the aerodynamic load of the train. This study examines the influence of the hole type on the wind field behind the porosity windbreak. Then, the relationship between the resistance coefficient of the porous medium, the porosity of the windbreak, and the aerodynamic loads of the train is investigated. The results show that the porous media physical model can be used instead of the windbreak geometry to study the windbreak-train aerodynamic performance, and the process of using this method is suggested.

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Central South University