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Natural Ventilation of a department store.

The undertray is known to be the most aerodynamically efficient downforce generating device. Theoretically, almost 50-60 percentage of the downforce generated by the aerodynamic package of an F1 car is generated by the undertray. Moreover, the undertray produces a very minimal amount of drag force owing to its reduced frontal area hence the lift(here downforce) to drag ratio is very high. Therefore, optimizing the undertray design is of great significance to the overall downforce generated by a car.

Simulation of an aerodynamics package of a student-designed FSAE car.

This project  involves meshing externally an F1 type Front Wing, and then simulating its' operation when facing a horizontal airflow of 20 m/s. Nowadays it is very common to witness F1 type cars using this type of leaf-like wings, called cascades, acting to generate vortices behind them that spiral upwards and outwards in channels controlled to the millimeter and shaped around the front wheels, towards the underfloor, through and around radiator inlets and between suspension components, and lately , it has been introduced by some Formula Student teams as well.  For this case a Symmetry plane was added midst the Part, and half the part was used for meshing and simulation for simplification. A steady state incompressible flow simulation is executed to visualize the air flow around the bodywork and wings of the part, as well as the pressure distribution, the outwash effect of the cascade and endplate, as well as the vortices of the footplate.

CFD simulation on a designed wing to obtain the acting forces on it.

External flow simulation for the reference SAE notchback model

external aerodynamics | SimScale Project Library | Page 4