A SIMPLE 3-DIMENSIONAL URBAN ENERGY BALANCE MODEL AND OUTDOOR SCALE MODEL EXPERIMENTS

Abstract

A Simple 3-dimensional Urban canopy Model for Meso-scale simulation (SUMM) was proposed. The model predicts the energy balance of constituent faces (roof, floor and 4 vertical walls) without time-consuming iterations. In the model, complex 3-dimensional radiation processes (multi-reflection processes) are theoretically solved, resulting in a large reduction of computational time. As for the turbulent transfers, the network of resistance is adopted. We also conducted outdoor scale model experiments having the similar geometric structure with SUMM, to construct the databases (energy balances and surface temperatures) for model validation, and to examine unknown model parameters (e. g. turbulent transfer coefficients).