NEAR FIELD DISPERSION IN THE URBAN ENVIRONMENT- A HYDRAULIC FLUME STUDY

摘要

The dispersion of material released from a point source immediately upwind of an obstacle array has been examined in a hydraulic flume with a low level of background turbulence. The main purpose of the experiments was to examine the interaction of the plume and the internal Boundary layer(IBL)created over the obstacle array. The obstacle array consisted of 11 rows of Cubes at 16/100 packing density in a staggered arrangement. Plume dispersion was measured using Flow visualization with Rhodamine dye and also with a thermal tracer technique.