Characteristics of Temperature Fields and Flow Fields in a Heated Street Canyon by Scale Modeling

Abstract

The street canyon phenomenon has a negative impact on air quality. Flow, temperature, and the concentration fields of pollutants affect street canyon. Many studies have focused on the concentration and flow fields; model experiments on the temperature field have been less examined. This experiment investigates the effect of model height and placement of flow and temperature fields. Temperature and flow fields are visualized using a smoke-wire method, one of the methods used to visualize a flow field. Visualization images were investigated in comparison to several other images. In turbulent flow conditions, temperature change of the street is verified when the turbulence parameter has changed. As a result of the experiment, data showing a high cooling effect was obtained. Furthermore, a trend was verified for cooling effects under turbulent flow conditions.