Numerical study on impacts of solar chimney structure on ventilation effects

Numerically simulates the flow and temperature fields inside solar chimney by Realizable K-ε turbulent model and DO radiation model, and the numerical results agree well with experimental data from related papers. Simulates and analyses the influence of chimney height and width on ventilation effects. The results show that the induced flow rate increases with the increase of the height, while it first increases and then decreases with the increase of the width; Grashof number plays an important role in determining the optimal chimney height; Recirculating flow in the chimney could be prevented by adopting the shrinking cross section.