In forced convection scenarios, the direction of the wind significantly influences the convective heat transfer coefficient. If the air velocity is uniform at 5 m/s with a convective coefficient of 30, it may not be accurate to apply this value to all faces of the channel. The front face, where the wind directly impacts, will experience the full convective coefficient, while other faces may have different values due to reduced airflow. It's essential to consider the flow characteristics and potential variations in velocity across the channel. Therefore, the assumption of a uniform convective coefficient for all faces may not hold true.