Increase in high-rise residential building has changed the envelope of residential building to aluminumcurtain wall which requires the use of the single-sided ventilation to be used instead of the crossventilation. It causes dissatisfaction mainly with indoor air velocity and ventilation volume. Therefore,the objective of this study is to improve the natural ventilation performance of high-rise residentialbuilding by opening design. To improve the natural ventilation performance in single skin faade, theeffect of different types of window will be evaluated. Furthermore, evaluation will be performed toevaluate the improvement when double skin faade is applied. This evaluation will be continued toknow how to plan openings of double skin faade, such as inlets, outlets and outside faade windows.The evaluations will be carried out using a computational fluid dynamics (CFD) simulation program.