Front Wheel Induced Self-Contamination

I am a postdoctoral fellow and responsible for a large two-year industrial project that is carried out in collaboration with the Swedish automotive industry.

Purpose and goal

The objective of this project is to create the prerequisites to, in early phases of a vehicle development project, by means of simulations, be able to virtually assess suitable placements of sensors for autonomous drive and active safety systems on the exterior body of a vehicle when the vehicle is used in a realistic user environment, i.e. in rain or on wet roads. If exterior sensors become wet or contaminated, the automated systems relying on the sensor input will be impaired, or in a worst-case scenario, fail to work altogether.

Expected results and effects

The project will result in the following: 1. Numerical models describing water movement on a rotating front wheel, taking into account wheel modelling technique and water dynamics 2. Robustness and sensitivity analysis of the numerical models to ensure that the models are valid under real-life conditions. 3. Detailed information on spray characteristics in the vicinity of the front wheel. 4. Numerical models replicating the spray characteristics. 5. Choice of a phase-coupling formulation that is needed to capture the interaction between water and air.

Planned approach and implementation

The project will be conducted using a combination of experimental work, numerical modelling and numerical simulations. The first part of the project will be focused on experimental work, as these activities will build a foundation for development of numerical models, simulations and validation of the numerical models. In all phases of the project, full scale production vehicles and/or wheels will be used.

Brief facts

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Co-workers at the division Applied Thermodynamics and Fluid Mechanics