This study examines how photovoltaic (PV) panel arrays in agrivoltaic systems modify the structure of the atmospheric surface layer under near-neutral conditions. Experiments were performed in a recirculating flume channel equipped with 60 scaled PV panel models. Bed roughness representative of the crop layer was reproduced by uniformly distributing gravel along the channel bottom. Similarity with the full-scale configuration was ensured through Reynolds-number dynamic similarity. A parametric campaign was carried out by varying panel inclination and flow rate. Three discharges were tested (0.035, 0.075, and 0.095 m³/s), while the water depth at the upstream edge of the panel array was kept constant at 0.5 m for all cases.