Bridging relations are frequently used to provide engineering aerodynamic predictions in the transitional regime between free-molecular and continuum ows. Such predictions are important for mission studies of high-speed planetary entry vehicles to provide accurate analysis of trajectory dynamics, vehicle stability, and landing footprint. However, empirical parameters in these bridging relations...

In this study, we present a global Fourier mode decomposition framework for unsteady fluid–structure interaction. We apply the to isolate and extract aeroelastic modes arising from coupled three-dimensional fluid–membrane system. investigate frequency synchronization between vortex shedding structural vibration via analysis. explore role of flexibility in selection perform systematic comparison...

This article describes key issues which have to be addressed apply Computational Fluid Dynamics Naval Hydrodynamics. The specific aspects of Hydrodynamics are discussed and illustrated by recent simulations comparisons with available experiments. Free-surface flows or without waves even violent phenomena such as ventilation cavitation can modelled mixture-fluid surface capturing. Turbulence mod...

A numerical study of the wake dynamics and stability of the flow around bluff rings placed normal to the flow direction at low Reynolds number is presented. An attractive feature of this bluff body geometry is that it effectively behaves locally like a circular cylinder at high aspect ratio while, as the aspect ratio is reduced to zero, the body is transformed to a sphere. Thus, it covers a ric...

A turbulent axisymmetric bluff body wake is investigated using large eddy simulation to uncover key flow dynamics and structures. The effect of low-frequency high-frequency pulsed jet forcing at the point separation studied reveal underlying mechanisms involved in base pressure changes, which provide a reference for drag reduction active control.