Numerical simulation of indoor environment in large indoor spaces with natural ventilation. Part I: Development of a simultaneous simulation technique for inside and outside airflow of large indoor stadiums.

A purpose of this research work is to study the environmental control in large indoor stadiums which utilize the natural ventilation. In these problems, effects by the airflow in and around the stadium should be analyzed. In this research work, a numerical analysis technique which enables simultaneous simulation of indoor airflow and the airflow around buildings was developed adopting composite grid coordinate calculation technique. In this paper, an outline of this technique is described.