As an industrial PhD student Arun Kumar, employed by Volvo Cars Group, focuses on the Unsteady Aerodynamics and its Influence on Vehicle Stability. The flow around a passenger vehicle consists of 3-D unsteady structures that can influence separation prone regions. Such complex flows can have significant impact on the aerodynamics forces. The goal is to find out the parameters that significantly deviate the results between computational simulation, wind-tunnel simulation and on-road tests. Also to reliably detect and predict the aerodynamic instabilities for on-road conditions. This project involves computational simulation, wind tunnel simulation and on-road tests.