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Yiguang Ju
Princeton University
376Publications
54H-index
9,180Citations
Publications 376
Newest
#1Tianhan Zhang (Princeton University)H-Index: 1
#2Yiguang Ju (Princeton University)H-Index: 54
Abstract The laminar flame speeds and structures of near-limit autoignition-assisted cool and warm n-heptane/air flames at different ignition Damkӧhler numbers which are the ratios between flow residence time and the ignition delay time, elevated temperatures and pressures are studied computationally and analytically over a broad range of equivalence ratios. The primary objective of this work is to understand the effects of the ignition Damkӧhler number, mixture temperature, equivalence ratio, a...
#1Xiaofang Yang (Princeton University)H-Index: 12
#2Fang Zhao (Princeton University)
Last.Bruce E. Koel (Princeton University)H-Index: 52
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Development of earth-abundant electrocatalysts for hydrogen evolution and oxidation reactions in strong acids represents a great challenge for developing high efficiency, durable, and cost effective electrolyzers and fuel cells. We report herein that hafnium oxyhydroxide with incorporated nitrogen by treatment using an atmospheric nitrogen plasma demonstrates high catalytic activity and stability for both hydrogen evolution and oxidation reactions in strong acidic media using earth-abundant mate...
#1Alex G. Novoselov (Princeton University)
#2Christopher B. Reuter (Princeton University)H-Index: 7
Last.Michael E. Mueller (Princeton University)H-Index: 15
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Abstract Turbulence, low-temperature chemistry, and their interactions in the form of turbulent cool flames are critical to understanding and improving advanced engines. Design of such engines requires tractable simulations which in turn necessitate turbulent combustion models that can account for cool flames. While manifold-based turbulent combustion models are an attractive option for hot flames, their applicability to cool flames is not yet fully understood. This is partially due to the lack ...
#1Yiguang Ju (Princeton University)H-Index: 54
#2Christopher B. Reuter (Princeton University)H-Index: 7
Last.Sang Hee Won (USC: University of South Carolina)H-Index: 3
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Abstract Cool flames play a critical role in ignition timing, burning rate, burning limits, engine knocking, and emissions in conventional and advanced combustion engines. This paper provides an overview of the recent progress in experimental and computational studies of cool flames. First, a brief review of low-temperature chemistry and classical studies of cool flames is presented. Next, the recent experimental and computational findings of cool flames in microchannels, microgravity droplet co...
#1Ning Du (CAS: Chinese Academy of Sciences)H-Index: 1
#2Wenjun Kong (Beihang University)
Last.Yiguang Ju (Princeton University)H-Index: 54
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#1Omar R. Yehia (Princeton University)H-Index: 2
#2Christopher B. Reuter (Princeton University)H-Index: 7
Last.Yiguang Ju (Princeton University)H-Index: 54
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Abstract The development of alternative drop-in fuels and fuel blends with petroleum-derived fuels necessitate an understanding of the kinetic interactions between aromatics and alkanes for the development of advanced low-temperature combustion engines. In the present study, the role of aromatic chemistry on n -alkane low-temperature chemistry is investigated by using nitrogen-diluted nonpremixed cool flames of n -dodecane/ n -propylbenzene blends in an atmospheric counterflow burner. Effects of...
#1Xingqian Mao (Beijing Jiaotong University)
#2Qi Chen (Beijing Jiaotong University)H-Index: 2
Last.Yiguang Ju (Princeton University)H-Index: 54
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Abstract The present work reports on the effects of controlled non-equilibrium excitation of reactant molecules on low temperature H 2 /O 2 /He ignition by numerically modeling a hybrid repetitive nanosecond (NSD) and DC discharge at atmospheric pressure. At first, a detailed plasma-combustion kinetic model of H 2 /O 2 /He, including non-equilibrium excitation, is developed and validated by experimental data of a repetitively-pulsed nanosecond discharge. Then, the effects of ignition enhancement...
#2Yunhua GanH-Index: 10
Last.Yi Zhou
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Abstract The spray and combustion characteristics of biodiesel-ethanol blends were experimentally investigated by using electrospray atomization in a meso-scale combustor. Phase Doppler anemometry measurements were employed to obtain droplet size distribution. Optical measurements were carried out to quantify the electrospray structures. With the addition of ethanol, the spray angle increased and the droplet size decreased from 128 μm to 12 μm. The polydisperse spray of the biodiesel-ethanol ble...
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