A large-eddy simulation (LES) of a bluff-body-stabilized flame has been carried out using a new strategy for LES grid generation. The recursive filter-refinement procedure (RFRP) has been used to generate optimized clustering for variable density combustion simulations. A methane–hydrogen fuel-based bluff-body-stabilized experimental configuration has been simulated using state-of-the-art LES a...

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...

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.

The flow passing a circular cylinder can trigger flow-induced vibrations such as the vortex-induced vibration. In this paper, authors investigated an active method to control wake flow. scheme was achieved by blowing through structured porous surface that manufactured 3D printing precisely. momentum changed various mass rates so it defined different values of non-dimensional coefficient C ? . e...