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ART Grand Prix has been engaged in the Formula 3 Euroseries Championship since 2003. The regulations allow teams to work intensively on external aerodynamics to improve the performance of their Formula 3 car. Therefore, many wind tunnel tests were performed to obtain experimental data which permitted to characterize the global aerodynamic performances of the ART F3 car and to lead to many developments. To bring more efficiency into the development process of external aerodynamic parts, the use of CFD, as a tool in the evaluation and understanding of aerodynamic performances, became more and...
This paper describes the prediction of environmental loads on a typical three-leg jack-up platform under freak wave conditions. Considered were cases where the air gap is small and the hull is subject to impact-related wave-in-deck loads. The technique to predict wave loads was based on the use of a validated CFD code that solves the Reynoldsaveraged Navier–Stokes equations. This code relies on the interface-capturing technique of the volume-of-fluid type to account for highly nonlinear wave effects. It computes the two-phase flow of water and air to describe the physics associated with...
The paper describes coupled CFD combustion simulations and CAE engine performance computations to describe the operation over the full range of load and speed of an always lean burn, Direct Injection Jet Ignition (DI–JI) hydrogen engine. Jet ignition pre-chambers and direct injection are enablers of high efficiencies and load control by quantity of fuel injected. Towards the end of the compression stroke, a small quantity of hydrogen is injected within the spark-less pre-chamber of the DI–JI engine, where it mixes with the air entering from the main chamber and auto-ignites because of the...
Computational Fluid Dynamics codes have been used in motorsports for decades, but have only recently become available to private and Formula Student teams. The use of “out of the box” codes by non-specialist personnel in the development of aerodynamic packages can produce poor results and lead to low quality designs. By comparing numerical results obtained using different basic settings with experimental tests of the same set-up, this project aims to determine whether commercial CFD packages can be used as a tool for race car aerodynamic design in a low-budget environment by relatively...
This paper supports a concerted effort towards validating an unstructured finite volume methodology for combined flow, thermal and stress analysis of turbine blades. In this part, CFD and conjugate heat transfer solutions are compared against measured surface pressure and heat transfer profiles on the C3X turbine. Sensitivities of the prediction to inlet turbulence levels and laminar-to-turbulent boundary layer transition are also presented. The general framework of the paper describes an integrated system incorporating three important analysis components with respect to CAE analysis of...
Ensuring the thermal comfort of passengers is a crucial concern for passenger vehicle cabins. Passenger comfort is influenced by factors including the performance of the HVAC system, exposure to solar and thermal radiation, the thermal conductivity of the materials used in the cabin and the humidity of the surrounding air. A reliable approximation of thermal comfort parameters requires accurate numerical representation of all of these physical phenomena. This can be achieved by utilising strongly coupled solution of radiation, conduction and thermal fluid dynamics. In the present study,...
Thermal fatigue is a degradation mechanism induced on the primary piping system of a nuclear power plant. Consequences of thermal fatigue are often critical, ranging from structural damage to a complete shut-down as happened with the French pressurized water reactor (PWR) Civaux in 1998. Thermal fatigue has been a very persistent problem and has also occurred in the Japanese PWR Tsuruga-2 in 1999, and the Japanese PWR Tomari-2 in 2003. Hence, it is considered to be a serious safety concern and is seen as one of the most influential parameters on the ageing and life management of nuclear power...

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