The high-speed motion of a seaplane involves the coupled hydrodynamic and aerodynamic effects. suction force, pressure, free surface model were numerically investigated to understand characteristics seaplane's planing motion. study utilized SST-DDES turbulence analyse Overset mesh method rigid body employed simulate substantial seaplane. volume fluid (VOF) was used capture sharpen interface bet...

We complement the recently achieved status quo of a self-consistent asymptotic theory: incompressible-flow separation from the perfectly smooth surface of a bluff rigid obstacle that perturbs an otherwise uniform flow in an unbounded domain. Here the globally formed Reynolds number, Re, takes on arbitrarily large values, and we are concerned with a long-standing challenge in boundary layer theo...

Experimental studies of plasma-assisted combustion have shown that Nanosecond Repetitively Pulsed (NRP) discharges are a very efficient way to improve flame stability in lean regimes. These generate non-equilibrium plasma induces local heating and an important production active species sufficient enhance the combustion. The aim this article is understand physical chemical mechanisms involved tu...

Chrysopelea paradisi, also known as the flying snake, possesses one of the most unique forms of aerial locomotion found in nature, using its entire body as a dynamic lifting surface without the use of wings or membranes. Unlike other airborne creatures, this species lacks appendages to aid in controlling its flight trajectory and producing lift. The snake exhibits exception gliding and maneuver...

A numerical study on the response of a two-dimensional bluff body wake subjected to harmonic forcing imposed by two rear pitching flaps is performed. The generated rectangle at height-based Reynolds number $Re=100$ , characterised laminar vortex shedding. Two strategies are examined corresponding in-phase ‘snaking’ and out-of-phase ‘clapping.’ effects aspect ratio ( $AR=1,2,4$ ), flapping frequ...

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...