Domain Decomposition Technique for Predicting Cross-Ventilation of Buildings

Domain decomposition technique is a methodfor CFD simulation, which can handle internalairflow of cross-ventilation of dwellingsseparately from extemal domain. Boundaryconditions for internal airflow simulation werepicked from calculated result of extemaldomain. Cross-ventilation flow rate waspredicted by applying Local dynamic similaritymodel for large openings. Simulated resultswere compared with experimental results andgood correspondence was observed with respectto cross-ventilation flow rate. Furthermore,general flow pattern predicted by domaindecomposition technique was correspondedwell to hll flow field simulation.