Optimization of outlet style for a new carriage duct;

The velocity distribution of air flow around a train was measured by using the ultrasonic anemometer-thermometer and digital three-cup anemometers.

Using the ground and vehicular test systems,many parameters such as pressure change,wind caused by train,micro-pressure wave and vibration acceleration of the wall of tunnel were tested.

Based on the characteristics of flow field around a train,the aerodynamic force on human body due to train induced air flow is divided into two parts:the pressure gradient force and the drag of a uniform flow past human body.

The data Acquisition and wireless transportation system of the rear air pressure based on GPRS network communication is introduced,which is used on train air testing in railway station.

Analysis of flow characteristics around train-bridge system under cross wind and train induced wind;

Three-dimensional flow will be appeared near the front and rear of the high-speed train when it is running on the bridge under the cross wind and train induced wind, also the flowfield near the middle part of the train will be affected at some degree.