Poster - Finite Element Method Plasma Simulation of Ceramic Metal Halide Lamps
Sep 24, 2014
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0 min read
Abstract
The ceramic metal halide lamps belong to the most efficient high intensity light sources of these days. Presently it is the nitrogen contamination that causes the most significant problems during ignition. If this material gets into the lamp’s interior in high concentrations, it will make the lamp unable to ignite properly at lower voltages. A self-consistent fluid model was developed in COMSOL Multiphysics® Plasma Module for studying the discharge phenomena. The results show that the nitrogen dissociation reaction affects the electrons’ kinetic energy distribution mainly by electron energy dissipation. The critical nitrogen concentration is around 500 ppm. Higher concentrations create significant change in breakdown process. In this case the breakdown voltage has to be increased in order to achieve ignition.
Date
Sep 24, 2014 1:00 PM — 2:00 PM
Event
Location
University of Cambridge
The Old Schools, Cambridge, CB2 1TN
Authors
Quantitative Researcher
Quantitative researcher with a PhD in Mathematics, combining expertise in stochastic modeling, statistical inference, and machine learning with industrial experience in developing predictive systems.
Experienced in large-scale time-series analysis, uncertainty quantification, and rigorous model validation, with strong Python/C++ skills and a proven track record of translating research into production software.
Currently developing intraday electricity-price models and stochastic-control methods for optimal liquidation at Aarhus University, in collaboration with an energy trading firm.