Raymond L. Speth

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The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Health benefits of reducing NOx emissions in the presence of epidemiological and atmospheric nonlinearities A J Pappin, A Hakami, P Blagden et al. Abstract In September 2015, the Volkswagen Group (VW) admitted the use of 'defeat devices'(More)
The author hereby grants to MIT permission to reproduce and to distribute publicly paper and electronic copies of this thesis document in whole or in part in any medium now known or hereafter created. Abstract A comprehensive membrane-electrode assembly (MEA) model of Solid Oxide Fuel Cell (SOFC)s is developed to investigate the effect of various design and(More)
In this paper, we experimentally investigate the combustion dynamics in lean premixed flames in a laboratory scale backward-facing step combustor in which flame-vortex driven dynamics are observed. A series of tests was conducted using propane/hydrogen/air mixtures for various mixture compositions at the inlet temperature ranging from 300 K to 500 K and at(More)
Hydrogen-rich alternative fuels are likely to play a significant role in future power generation systems. The emergence of the integrated gasification combined cycle (IGCC) as one of the favored technologies for incorporating carbon capture into coal-based power plants increases the need for gas turbine combustors which can operate on a range of fuels,(More)
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract The US Environmental Protection Agency (EPA) has alleged that Volkswagen Group of America (VW) violated the Clean Air Act (CAA) by developing and installing emissions control system 'defeat devices' (software) in model year(More)
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract This paper presents an experimental investigation into mode-transitions observed in a 50-kW, atmospheric pressure, backward-facing step combustor burning lean premixed C 3 H 8 /H 2 fuel mixtures over a range of equivalence ratios,(More)
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract. Many systems of equations fit naturally in the form du/dt = A(u) +(More)
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