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My name is John Axerio-Cilies, and I am a student at Stanford University. I work in the FPCE division of Mechanical Engineering. My current research is in aerodynamic numerical simulations of vehicles in ground contact. I am currently involved in uncertainty quantification related to using RANS turbulence modeling for investigating the fluid dynamics of Formula 1 tires. This includes dealing with both epistemic (model) uncertainty as well as aleatory (geometry, inflow conditions) uncertainty using stochastic collocation as well as response surface construction and sampling approaches. In order to validate and verify our models I perform high-fidelity LES simulations and compare the results to in-house experimental data. A specific focus of my research is to determine sensitivities in wake characteristics due to uncertainties in tire geometry and to the choice of turbulence model. In the past I have worked in collaboration with the aerodynamics department at Toyota Formula 1, using CFD to identify wake structures behind rotating wheels.