Solar Building Considering Wavelength Bands CFD Simulation, ANSYS Fluent Training

Wavelength bands are considered while designing solar buildings to maximize energy efficiency by utilizing solar radiation throughout the spectrum. These structures use cutting-edge materials and technology that selectively absorb, reflect and transmit sunlight in particular wavelength bands. This time, based on the reference paper “ Assessment of Various Trombe Wall Geometries with CFD Study, ” a CFD study is conducted, focusing on simulating different wavelength bands. Its major application is in Trombe walls.

Simulation Process

The solar building domain specifications are given in the reference paper. Based on it, the geometry model is erected using Design Modeler. Then, with a focus on a dense grid near trombe walls, meshing is done. 4 different radiative wavelength Bands are included in our study. It requires skillfully usage of Discrete Ordinates (DO) radiation module.

Post-processing

Recirculation regions exist in the back part of the building, primarily in the rear of the space. For instance, places where the warm current emerges from the Trombe gap do not alter air circulation. The temperature contour also reveals a warm stream of hot air rising to the top region, which gradually decreases as it moves downstream. Surely, change in the gaps can make slight alteration in air circulation pattern and temperature field. Further, the radiation received by each of four wavelength bands are calculatable.