CFD Numerical Investigation of a New Solar Flat Air-Collector Having Different Obstacles with Various Configurations and Arrangements

Figure 11

Influence of relative roughness pitch (b/a) of the cubic obstacle on the turbulent intensity distribution (%) and on the air flow inside the SFAC air cavity. (a) Without cubic baffles inside the cavity, (b) relative roughness pitch: b/a = 2, (c) relative roughness pitch: b/a = 4, and (d) relative roughness pitch: b/a = 6.

(a)

(b)

(c)

(d)