CFD simulation in naturally ventilated multi-purpose sports hall: Effects to the basketball and badminton matches

Minimizing the operational cost of a building while maintaining the thermal comfort is one of the criteria required in a sport facility building. However, the standard to obtain this condition in Indonesia is not yet available. The thermal comfort condition of a multipurpose sport facility in a public university in Yogyakarta, Indonesia was investigated by observing the air movement through natural ventilation openings. Performance metrics for the thermal comfort are the temperature distribution, relative humidity, air flow rate, and outdoor climate. Simulation was done using SolidWorks 2013 and the thermal condition was known. The results were compared to the Indonesia National Standard (SNI) and Design Guidance Note from Sport England. The average temperature near the arena is 30.09°C with relative humidity of 67, which meets the category of a comfort warm condition. The spectator seats at the tribune are considered comfortably warm. The sport hall being observed has an air change rate (ACH) of 6.14 which exceeds the standard minimum of 1.5 and therefore, it is in no need of a mechanical ventilation system to support the air circulation.