NUMERICAL SIMULATION OF INDOOR AERODYNAMICS IN BIG ENCLOSED SPACES

摘要

The technique of field modelling is applied to predict thernindoor air movement and convective heat transfer induced byrnthermal sources in big enclosures. This is achieved by solving arnsystem of partial differential equations describing the conservationrnof momentum, enthaply and mass. The k-E model is used torndescribe the turbulent effect. The equations are discretized usingrnfinite difference method and solved by thernSemi-Implict-Method-for Pressure-Linked-Equations-Revisedrn(SIMPLER) scheme. Examples taken to illustrate the capability ofrnthe model are the smoke movement pattern in an atrium fire, partrnof an air-conditioned atrium, the ventilation of a big cargo terminalrnand a fire compartment for validating the field model. Thernpredicted results are particularly useful for critizing the performancernof the mechanical system in those big spaces.