Thermal and fluid Dynamic Performance of wavy Wall Systems applied for architectural Design of Building in Saudi Arabia

摘要

For the purposes of thermal comfort in buildings, a new innovation architectural design using wavy wall systems applied for thermal insulation in building in Saudi Arabia has been developed. In the present paper, numerical investigations of the thermal and dynamic performance of such wavy wall system are carried out. The numerical simulation is carried out using CFD code developed by the present authors. The system of the governing equations being solved consists of the set of Navier-Stokes equations and energy equation in its primitive forms. The governing equations are descretized over a regular grid system using the control volume approach. The performance of the wavy wall system is investigated by considering different wave ratios and different Reynolds number and showing the effects of such geometrical parameters and inlet flow conditions on the thermal behavior of the wavy wall system. The numerical results obtained showed that the proposed architectural building design, in general, improves the thermal characteristics of the building by reducing the air temperature flowing over it. This can lead to saving energy consumption without using any of traditional insulation materials. Moreover, the effect of wave ratio is clearly obtained in such a way that by decreasing the wave ratio the temperature in the wave trough is decreased. However, the separation zone of the flow can be increased by increasing the wave ratio.