## 4 Results  
Analyzing graphical representations of temperature in the XY plane, a clear dependence of the temperature profile on the cavity width can be observed. The curves indicate a general tendency for the central temperature within the cavity to decrease as its width increases. This phenomenon suggests an influence of the air gap size on the thermal transfer capacity and on the internal convective regime. A non-uniform horizontal temperature distribution (along the X+ axis) is noticeable, with higher values near the boundary layers (X+ \(\approx\) 0 and X+ \(\approx\) 1) and lower values in the central region (X+ \(\approx\) 0.5). This pattern is typical of natural convection phenomena, where heated air near warm surfaces (assuming the extremities correspond to zones of significant thermal transfer) tends to rise, generating convective currents that influence the thermal distribution inside the cavity. The formation of thermal boundary layers near the walls is likely the cause of the elevated temperatures observed in these areas. Evaluating the graphical representations presented of the temperature contours in the ZY plane reveals a general trend in increasing temperature along the horizontal direction of the outlet section (from Y+ = 0 to Y+ = 1). This increase suggests thermal energy \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multicolumn{6}{c}{**Ansys Fluent 17 Values**} \\ \hline \multirow{2}{*}{**Channel Width**} & **Inlet** & **Outlet** & \multirow{2}{*}{**Mass Flow**} & \multirow{2}{*}{**Heat Flux**} \\  & **Temperature** & **Temperature** & & & \\ \hline
**cm** & **K** & **K** & **kg/s** & **kW** & **W** \\ \hline
4 & 255 & 273.77 & 6.32 \(\times\) 10\({}^{-12}\) & 1.1923 \(\times\) 10\({}^{-7}\) & 0.0001192 \\ \hline
6 & 255 & 274.74 & 2.43 \(\times\) 10\({}^{-11}\) & 4.8280 \(\times\) 10\({}^{-7}\) & 0.0004828 \\ \hline
8 & 255 & 275.53 & 1.42 \(\times\) 10\({}^{-10}\) & 2.9202 \(\times\) 10\({}^{-6}\) & 0.0029202 \\ \hline
10 & 255 & 276.21 & 2.04 \(\times\) 10\({}^{-10}\) & 4.3587 \(\times\) 10\({}^{-6}\) & 0.0043587 \\ \hline
12 & 255 & 276.82 & 2.39 \(\times\) 10\({}^{-10}\) & 5.2304 \(\times\) 10\({}^{-6}\) & 0.0052305 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Values determined by ANSYS Fluent 17. Figure 15: Velocity chart in the ZY plane for the outlet section plane. accumulation as the fluid traverses the cavity and interacts with its surfaces. Significant thermal stratification is observed depending on the cavity width. For larger cavity widths, higher temperatures are recorded throughout the outlet section profile. This finding indicates a direct influence of the cavity size on its capacity to retain and transfer heat. A wider cavity may allow for more extensive development of convective currents or reduce thermal losses to the exterior, resulting in elevated outlet temperatures. Analyzing the presented graphs, which illustrate the velocity profile in the XY plane for the mid-section, a significant variation in velocity magnitude is observed as a function of the channel width. As the channel width increases, a general trend of higher maximum velocities attained in the mid-section becomes evident. This positive correlation suggests a direct influence of the channel geometry on the internal fluid flow regime within the facade. Wider channels may facilitate more vigorous air circulation, possibly due to reduced flow resistance or changes in buoyancy forces that drive natural convection. The velocity profiles for all five channel widths exhibit a shape characteristic of flow within a channel, with reduced velocities near the walls (at X+ \(\approx\) 0 and X+ \(\approx\) 1) due to viscous effects, and a peak velocity in the central region (around X+ \(\approx\) 0.5). This parabolic or quasi-parabolic distribution is typical for laminar flows or for the central region of weakly turbulent flows in channels.