Abstract
Formula SAER is a student design competition organized by SAE International (formerly Society of Automotive Engineers). The body shapes could have been developed by CFD, but the designs of under bodies have been underdeveloped. This research evaluates the aerodynamic performance of a under tray by CFD and a wind tunnel test using a scale model. The scale model was manufactured by a 3D printer. The aerodynamic performance was measured in a wind tunnel with setting the models in mirror images which considers a ground effect. As a result, the aerodynamic performance of the under body was able to be certainly evaluated compared with the conventional method.
