Fan flow test

thingiverse

Experimenting with Internal Fins to Optimize Air Flow from a 40mm Fan The goal is to reduce the swirling air caused by the fan, which leads to rapid dispersal of airflow. Instead, a more laminar flow could be achieved. Initial results show a significant impact - the internal fins dramatically narrow the cone of air without reducing airflow noticeably. To visualize this effect, I directed the air flow over a wet towel and took a thermal photo. Any area with airflow cools below ambient temperature. Although the test doesn't fully capture the effect, a considerable change is evident, despite some reflected air hitting the towel, which may make it appear wider than it truly is. Future testing might reveal that adding internal fins to air duct cooling nozzles can improve airflow, but further investigation is necessary.