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Featured researches published by Xin Hui.


Energy & Fuels | 2017

Reduced Chemistry for Butanol Isomers at Engine-Relevant Conditions

Xin Hui; Kyle E. Niemeyer; Kyle B. Brady; Chih-Jen Sung

Butanol has received significant research attention as a second-generation biofuel in the past few years. In the present study, skeletal mechanisms for four butanol isomers were generated from two widely accepted, well-validated detailed chemical kinetic models for the butanol isomers. The detailed models were reduced using a two-stage approach consisting of the directed relation graph with error propagation and sensitivity analysis. During the reduction process, issues were encountered with pressure-dependent reactions formulated using the logarithmic pressure interpolation approach; these issues are discussed and recommendations are made to avoid ambiguity in its future implementation in mechanism development. The performance of the skeletal mechanisms generated here was compared with that of detailed mechanisms in simulations of autoignition delay times, laminar flame speeds, and perfectly stirred reactor temperature response curves and extinction residence times, over a wide range of pressures, temper...


49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition | 2011

Autoignition, Flame Propagation, and Extinction of Binary Fuel Blends of n-Decane/Ethylene and n-Decane/Methane

Kamal Kumar; Xin Hui; Apurba K. Das; Chih-Jen Sung

An experimental and computational investigation is carried out to understand the combustion response of binary blends of n-decane/ethylene and n-decane/methane. The experiments cover the phenomena of autoignition, flame propagation, and flame extinction. The reported results, for the various combustion responses, cover a pressure range of 1-7 bar and a temperature span of 750 K to 2200 K. Ignition delay measurements for ndecane/ethylene/air and n-decane/methane/air mixtures, corresponding to an overall equivalence ratio of 0.8, are conducted for a fixed compression ratio and for a post compression pressure of 7 bar, using a rapid compression machine. A parametric study is conducted by changing the relative amounts of n-decane:ethylene and n-decane:methane in the binary fuel blend to observe the influence of blending ratio on ignition delays. A similar parametric study for atmospheric flame propagation and extinction of preheated fuel blend/oxidizer mixtures is also conducted.


Combustion and Flame | 2012

The experimental evaluation of a methodology for surrogate fuel formulation to emulate gas phase combustion kinetic phenomena

Stephen Dooley; Sang Hee Won; Joshua S. Heyne; Tanvir Farouk; Yiguang Ju; Frederick L. Dryer; Kamal Kumar; Xin Hui; Chih-Jen Sung; Haowei Wang; Matthew A. Oehlschlaeger; Venkatesh Iyer; Thomas A. Litzinger; Robert J. Santoro; Tomasz Malewicki; K. Brezinsky


Fuel | 2012

Experimental studies on the combustion characteristics of alternative jet fuels

Xin Hui; Kamal Kumar; Chih-Jen Sung; Tim Edwards; Dylan Gardner


Fuel | 2011

Laminar flame speeds and extinction limits of conventional and alternative jet fuels

Kamal Kumar; Chih-Jen Sung; Xin Hui


Fuel | 2013

Laminar flame speeds of transportation-relevant hydrocarbons and jet fuels at elevated temperatures and pressures

Xin Hui; Chih-Jen Sung


Combustion and Flame | 2016

Soot formation in non-premixed counterflow flames of butane and butanol isomers

Pradeep Singh; Xin Hui; Chih-Jen Sung


Combustion and Flame | 2014

Effects of hydrogen addition on combustion characteristics of n-decane/air mixtures

Xin Hui; Chi Zhang; Meng Xia; Chih-Jen Sung


Combustion and Flame | 2015

Counterflow ignition of n-butanol at atmospheric and elevated pressures

Kyle B. Brady; Xin Hui; Chih-Jen Sung; Kyle E. Niemeyer


International Journal of Hydrogen Energy | 2015

Effect of hydrogen addition on the counterflow ignition of n-butanol at atmospheric and elevated pressures

Kyle B. Brady; Xin Hui; Chih-Jen Sung

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Chih-Jen Sung

University of Connecticut

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Kamal Kumar

University of Connecticut

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Kyle B. Brady

University of Connecticut

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Pradeep Singh

University of Connecticut

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