# Aerodynamics Made Easy - Car CFD Analysis Explained | Step-by-Step Guide

#### Aerodynamics Made Easy - Car CFD Analysis Explained | Step-by-Step Guide

Sample project: https://app.airshaper.com/simulations/car-aerodynamics-9aef87 More information: https://www.airshaper.com or info@airshaper.com In this video is a step by step explanation of how to use CFD simulations to analyze the aerodynamics of a sports car. We used the 3D model of the Aquilo concept car. ---Setup--- The AirShaper platform was used to set up the simulation. The car was oriented forward and a rotation was added to all of the wheels. ---Results--- - Pressure clouds (iso-surface for the total pressure coefficient of 0): These illustrate where energy losses are high. This highlights the drag caused by the front splitter, mirrors, internal air channels, exposed wheels, the tail, etc. - Pressure map: this one illustrates the pressure perpendicular to the surface. It clearly shows the pressure buildup at the front and on the exposed front wheels. It also shows the pressure reduction in locations where the air speeds up to move around a curvature. - Friction map: this one shows the magnitude of the friction force of the air flowing parallel to the surface. When low, this can indicate either stagnation of the flow (at the front of the car for example) or separation of the flow (behind the wheels, at the front splitter, ...). The surface streamlines indicate how the air moves across the surface. - 3D streamlines: these show how the air flows around the wind screen, underneath the car, through the internal channels, ... - Noise: this is an estimation of the sources of wind noise. As this is a steady stage RANS simulation, it is just an approximation based on the turbulent kinetic energy. - Elements: the flow through the radiator is visualized and the total flow rate is calculated. - Forces: the forces on each individual element are calculated.