jismart2024043: Study on The Impact of Sky-Garden Setting on Indoor Wind Environment of Qingdao's Fourth-Generation Apartment Based on CFD Simulation

Abstract

The fourth-generation residential buildings are one of the main development directions in China's real estate industry. Existing research shows that the energy consumption of HVAC equipment accounts for 40% of the total building energy consumption. Proper platform design can effectively enhance natural ventilation and air circulation within buildings. Therefore, optimizing indoor natural ventilation to reduce the need for mechanical ventilation is an effective approach to achieving zero-energy buildings. This study uses Butterfly to simulate the wind environment of a typical unit in a fourth-generation residential building in Qingdao, investigating the impact of the geometry, railing height, and location of the sky garden on the indoor wind environment. The study finds that under vertical wind conditions (0°), the presence of a sky garden significantly increases the indoor airflow velocity compared to a unit without a sky garden. The location and depth of the terrace are the main factors influencing this change. When the terrace depth ranges between 3 and 5 meters, the impact on the uniformity of the indoor airflow distribution is particularly notable. Additionally, excessively high railings negatively affect the indoor wind environment. This research provides scientific reference for the future design of sky gardens in fourth-generation residential buildings and offers new design ideas for reducing building energy consumption.