Comprehensive Application of Computational Geometry Technology and Conservation Renovation in Wind Environment Adjustment of Traditional Residential Buildings

Abstract

In this paper, the wind environment adjustment problem of traditional residential buildings is deeply studied by integrating the computational geometry technology and the protective remodeling strategy. Through the computational fluid dynamics software CFX, combined with the SST k-ω turbulence physical model and unstructured grid technology, numerical simulations are carried out for the circular, square and heliostat buildings in traditional residential buildings. Based on BIM and building code standards, a reliability evaluation method based on residents’ comfort under building wind environment is established. Numerical simulations show that the wind pressure coefficient reaches its maximum value at a height of about 3 m for both round and square residential buildings, and the lowest wind pressure coefficient is -1.47 at the gap of the building.For the day-shaped residential buildings, the wind speed in the interior site is relatively low, especially at the height of the pedestrians, and the average wind speed is only 0.34.The percentage of the wind environment at the exterior measurement points is low in the warm season for the round, square, and day-shaped residential buildings, and the percentage of the wind environment at the exterior measurement points is low in the warm season. The percentage of wind environment was low for round, square, and day-shaped residential buildings, 5.1%, 4.9%, and 4.4%, respectively, and high for cold season exterior measurement points, 34.3%, 35.6%, and 34.4%, respectively. Strategies for the conservation and renovation of residential buildings are formulated, including optimization of the design of the external environment and ventilation of the building, optimization of the design of the building structure that guides the natural ventilation, and mechanically-assisted enhanced ventilation design.