Using FEA based simulation to find the drag coefficient of products that experience forces due to relative motion of fluid flow is a reliable method to cut down on the design time and cost as this helps to visualize the fluid flow around the product and provides an idea about different pressure zones, fluid vectors, and ways to streamline the flow through design of product contours.

Images shows the drag forces experienced by an ac unit mounted on the roof top of a vehicle at relative wind force unto 130 Kmph.