Jimmy-John Hoste

• Aerothermodynamics and Combustion Engineer at Destinus SA

Hypersonic flight involves a variety of complex flow phenomena that directly impact the aerothermodynamic loading of high-speed vehicles. The turbulence encountered during a typical flight trajectory influences and interacts with the shock waves on and around the surface of a vehicle and its propulsion system, affecting both aerodynamic and power p...

This work assesses the status of Reynolds-averaged Navier–Stokes' (RANS) predictive capability for axi-symmetric hypersonic geometries. An in-depth literature review on the topic is provided including relevant developments in the field of RANS for these types of setups. Furthermore, as part of the Applied Vehicle Technology-352 on hypersonic turbul...

This paper presents an overview of the use of CFD to help in the design of various aspects of the Destinus hyperplanes. CFD is not only relied upon in the aerodynamic shape definition but also in engine related design tasks including intakes, compressors, turbines, nozzles as well as feeding components. The different tasks are complementary to rapi...

Within the context of supersonic combustion modeling in air-breathing propulsion, the turbulent Prandtl and turbulent Schmidt numbers have a profound effect on the resulting predictions. This work considers a Scalar Fluctuation Model (SFM) introducing two extra transport equations in order to specify variable values for turbulent Prandtl and turbul...

The eddy dissipation model (EDM) is analysed with respect to the ability to address the turbulence–combustion interaction process inside hydrogen-fuelled scramjet engines designed to operate at high Mach numbers (≈7–12). The aim is to identify the most appropriate strategy for the use of the model and the calibration of the modelling constants for...

This paper considers the Eddy Dissipation Model to address the combustion process inside scramjet engines designed to operate at high flight Mach numbers. The aim is to demonstrate the most appropriate use of the model for design purposes. To this end, two hydrogen-fueled experimental scramjet configurations with different fuel injection approaches...

Scramjet technology has gained considerable interest in multi-stage to orbit design concepts due to its reusability and high specific impulse at high-Mach regimes. The aim of the present work is to introduce Reynolds Averaged Navier-Stokes CFD calculations in the design phase of scramjet vehicles and increase the fidelity of engine performance asse...