A5006563491- Computational Fluid Dynamics and Aerodynamics
- Advanced Numerical Methods in Computational Mathematics
- Magnetic confinement fusion research
- Gas Dynamics and Kinetic Theory
- Electromagnetic Simulation and Numerical Methods
- Numerical methods for differential equations
- Laser-Plasma Interactions and Diagnostics
- Lattice Boltzmann Simulation Studies
- Dust and Plasma Wave Phenomena
- Fluid Dynamics and Turbulent Flows
- Fluid Dynamics Simulations and Interactions
- Laser-induced spectroscopy and plasma
- Electromagnetic Scattering and Analysis
- Ionosphere and magnetosphere dynamics
- Fluid Dynamics and Vibration Analysis
- Differential Equations and Numerical Methods
- Plasma Diagnostics and Applications
- Numerical methods in engineering
- Nonlinear Photonic Systems
- Parallel Computing and Optimization Techniques
- High-pressure geophysics and materials
- Advanced Fiber Laser Technologies
- Advanced Mathematical Modeling in Engineering
- Plasma and Flow Control in Aerodynamics
- Lightning and Electromagnetic Phenomena
Rensselaer Polytechnic Institute
2015-2024
Lawrence Livermore National Laboratory
2010-2023
University of California, Los Angeles
2021
Culham Science Centre
2017
Sandia National Laboratories California
2008
The 2014–2016 JET results are reviewed in the light of their significance for optimising ITER research plan active and non-active operation. More than 60 h plasma operation with first wall materials successfully took place since its installation 2011. New multi-machine scaling type I-ELM divertor energy flux density to is supported by principle modelling. relevant disruption experiments modelling reported a set three mitigation valves mimicking setup. Insights L–H power threshold Deuterium...
Methods for the numerical discretization of Vlasov equation should efficiently use phase-space and introduce only enough dissipation to promote stability control oscillations. A new high-order nonlinear finite-volume algorithm that discretely conserves particle number controls oscillations is presented. The method fourth order in space time well-resolved regions but smoothly reduces a third-order upwind scheme as features become poorly resolved. applied several standard problems...
Two-dimensional Vlasov simulations of nonlinear electron plasma waves are presented, in which the interplay linear and kinetic effects is evident. The wave created with an external traveling potential a transverse envelope width Δy such that thermal electrons transit “sideloss” time, tsl~Δy/ve. Here, ve velocity. quasisteady distribution trapped its self-consistent studied after field turned off. In cases particular interest, bounce frequency, ωbe=keϕ/me, satisfies trapping condition...
Previous computational studies of diffracting detonations with the ignition-and-growth (IG) model demonstrated that, contrary to experimental observations, computed solution did not exhibit dead zones. For a rigidly confined explosive it was found that while diffraction past sharp corner lead temporary separation shock from reaction zone, detonation re-established itself in due course and no pockets unreacted material remained. The present investigation continues focus on potential for...
The concentration of ions, or osmolarity, in the tear film is a key variable understanding dry eye symptoms and disease.In this manuscript, we derive mathematical model that couples osmolarity (treated as single solute) fluid dynamics within on 2D eye-shaped domain.The includes physical effects evaporation, surface tension, viscosity, ocular wettability, osmosis supply drainage.The governing system coupled non-linear partial differential equations solved using Overture computational...
The decay of a single-frequency, propagating ion acoustic wave (IAW) via two-ion to continuum IAW modes is found result in highly turbulent plasma, soliton production, and rapid heating. Instability growth rates, thresholds, sensitivities plasma conditions are studied fully kinetic Vlasov simulations. rate IAWs scale linearly with the fundamental potential amplitude ϕ1 for ZTe/Ti≲20, beyond which instability shown higher power ϕ1, where Z charge number Te (Ti) electron (ion) thermal...
Simulations of inertial confinement fusion (ICF) experiments require high-fidelity models for laser beam propagation in a nonuniform plasma with varying index refraction. We describe new numerical wave solver that is applicable to centimeter-scale length plasmas encountered indirect drive ICF applications. The one-way Helmholtz equation (OHE) generalizes the time-harmonic paraxial large angles. Here, we present methodology numerically evaluate exact solution OHE. This computed by...