EFFECT OF THE 30° TIP WINDOW MODEL ON AIR MOVEMENT IN WEST AND EAST ORIENTED BUILDINGS

Abstract

This research is part of previous research. The aim of this research is to find the correct building orientation and consider aspects of speed and source of dominant wind direction as input, position and area of ventilation openings, air velocity and air movement patterns in interior spaces with a 30° tipping window model located at two envelope planes facing each other (cross ventilation).
The research object is a meeting room with an area of 54 m2 located in Kwadeware Village, Sentani City which will be modeled using the Ecotect Analysis 2011 CFD (Computational Fluid Dynamics) simulation program. The input data for running this simulation program uses primary data taken in the field, namely building orientation data. existing, average exterior wind speed (5 m/s) and exterior air temperature (28°C) and interior (32°C) as well as secondary data such as dominant wind direction and average exterior air temperature in one year from BMKG Jayapura Region V Center, as well as data on air viscosity (viscosity) 1.8e-05 and air pressure (1.2 kg/m3) from International Standards.
It was found that the building orientation was correct, the ventilation openings on the West side envelope were the most optimal areas to produce interior air flow movement and velocity (0.319 m/s). This is because the dominant wind direction is from the West, the ventilation openings on the West side casing are wider than the ventilation openings on the East side casing. It was felt that the interior air flow movement pattern was not optimal, this was because not all of the inlet holes were positioned directly opposite the outlet holes, only 12 of the 36 inlet ventilation holes were directly opposite the 4 outlet ventilation holes.