A5072303647- Combustion and Detonation Processes
- Energetic Materials and Combustion
- Computational Fluid Dynamics and Aerodynamics
- Gas Dynamics and Kinetic Theory
- Particle Dynamics in Fluid Flows
- Fire dynamics and safety research
- Rocket and propulsion systems research
- Granular flow and fluidized beds
- Laser-Plasma Interactions and Diagnostics
- Plasma and Flow Control in Aerodynamics
- High-Velocity Impact and Material Behavior
- Combustion and flame dynamics
- Planetary Science and Exploration
- Structural Response to Dynamic Loads
- Fluid Dynamics and Heat Transfer
- Risk and Safety Analysis
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- Laser-induced spectroscopy and plasma
- Fluid Dynamics and Turbulent Flows
- Spectroscopy and Laser Applications
- Atomic and Subatomic Physics Research
- earthquake and tectonic studies
- Heat transfer and supercritical fluids
University of Florida
2013-2025
University of Maryland, College Park
2014-2018
United States Naval Research Laboratory
2013
Pennsylvania State University
2005-2012
A model for predicting the behaviour of a compressible flow laden with shocks interacting granular material has been developed and tested. The consists two sets coupled Euler equations, one gas phase other phase. Drag, convective, heat transfer non-conservative terms couple governing equations. Intergranular stress acting on grains is modelled using kinetic theory in dilute regimes where particle collisions are dominant frictional–collisional pressure dense regions layers slide over another....
Flame acceleration and transition to detonation in submillimetre two-dimensional planar three-dimensional square channels were simulated by solving the compressible reactive Navier–Stokes equations. A simplified chemical–diffusive model was used describe diffusive transport chemical reaction of a highly mixture, such as stoichiometric ethylene oxygen 2D 3D channels. The walls modelled no-slip adiabatic. initial flame precursor shock formation consistent with earlier results. Viscous...
This paper explores a model for nonlinear one-degree of freedom passive vibration isolator system, known as smart engine mount. Nonlinearities are employed to analyze and possibly improve the behavior optimal linear Nonlinear damping stiffness rates have interacting effects on dynamic The frequency response system is obtained using averaging perturbation method, parametric analysis shows that effect rate opposite rate. Stability steady state periodic has also been analyzed. Jump avoidance...
This article presents methodological advances in the state-of-the-art for making time-dependent, thermochemical measurements within kilogram-scale explosive post-detonation fireballs utilizing tunable laser absorption spectroscopy. measurement capability is critical validating multi-scale, multi-physics models of dynamics. The technique based on hardened gauges built around rapidly-tunable lasers and custom post-processing algorithms that provide quantitative data interior to large opaque...
Plume hydrodynamics and plasma-gas intermixing drives chemical reactions in laser ablation plasmas, where molecular formation is shown to occur during early times (<100 ns) the presence of strong laser-induced shockwaves.
A multidimensional numerical study was performed to explore the ignition and combustion mechanisms of an annular aluminum particle shell surrounding a trinitrotoluene (TNT) charge. The model equations consist fully compressible reacting gas coupled kinetic-theory-based Eulerian granular multiphase model. parametric explored influence thickness Al layer, initial packing, diameter particles. computed results show flame structures that are consistent with both delayed prompt explosively...
A numerical simulation study was performed to examine the post-detonation reaction processes produced by detonation of a 12 mm diameter hemispherical pentaerythritol tetranitrate (PETN) explosive charge. The simulations used finite rate detailed chemical model consisting 59 species and 368 reactions capture including air dissociation from Mach 19+ shock waves that initially break out PETN charge, within products during expansion, afterburning when mix with heated air. multi-species...