A computational tool is used to predict forces and moments acting on objects moving through air or other fluids. These tools, ranging from simple online utilities to complex software suites, employ principles of fluid dynamics to estimate quantities like lift, drag, and pressure distribution. For instance, a simple tool might calculate the drag on a sphere given its diameter, velocity, and air properties. More sophisticated tools can simulate airflow around complex shapes like aircraft or automobiles.
Predicting aerodynamic characteristics plays a crucial role in numerous fields, including aerospace engineering, automotive design, and wind turbine development. Accurate predictions allow engineers to optimize designs for improved fuel efficiency, enhanced stability, and minimized noise. Historically, estimations relied on wind tunnel experiments, which are costly and time-consuming. Computational methods offer a faster and more cost-effective alternative, enabling rapid iterations and exploration of a wider range of design parameters. This capability has significantly accelerated technological advancement in fields dependent on understanding airflow behavior.