Pengzhi Wang

ORCID: 0009-0009-0966-4931
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About
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Research Areas
  • Advanced Combustion Engine Technologies
  • Heat transfer and supercritical fluids
  • Combustion and flame dynamics
  • Chemical Thermodynamics and Molecular Structure
  • Catalytic Processes in Materials Science
  • Combustion and Detonation Processes
  • Thermal and Kinetic Analysis
  • Advanced Chemical Physics Studies
  • Biodiesel Production and Applications
  • Thermochemical Biomass Conversion Processes
  • Pickering emulsions and particle stabilization
  • Catalysis and Oxidation Reactions
  • Nuclear reactor physics and engineering
  • nanoparticles nucleation surface interactions
  • Free Radicals and Antioxidants
  • Atmospheric chemistry and aerosols
  • Rocket and propulsion systems research
  • Nuclear Materials and Properties
  • Analytical Chemistry and Chromatography
  • Micro and Nano Robotics
  • Field-Flow Fractionation Techniques

Ollscoil na Gaillimhe – University of Galway
2022-2024

North China University of Water Resources and Electric Power
2024

Dalian University of Technology
2019-2023

The core chemistry and thermodynamic data of large alkanes in NUIGMech1.3 were recently updated. In the present work, set rate rules for is optimized against experimental to improve predictive capability mechanism. As an initial step developing a consistent any larger alkane, we mechanism pentane isomers, whose mechanisms generated based on 185 24 reaction classes using MAMOX++ code. final combined contains 1427 species 6676 reactions. For efficient optimization such mechanism, Optima++ code...

10.1016/j.proci.2024.105408 article EN cc-by-nc-nd Proceedings of the Combustion Institute 2024-01-01

The helical cruciform fuel rod is a new design. Its advantages include large surface area–to-volume ratio, short thermal conductivity distance, and no need for grid spacers. This can effectively improve the hydraulic performance of nuclear reactors. To study assembly, subcooled boiling flow heat transfer characteristics this assembly are analyzed in present work based on computational fluid dynamics. results indicate that temperature distribution central wall circumferential direction has...

10.1080/00295450.2024.2385216 article EN Nuclear Technology 2024-08-13

Oxygenated fuels are usually employed as alternative or additive to gasoline and diesel in order reduce soot emissions. By involving the most recent reaction channels of polycyclic aromatic hydrocarbon (PAH) formation oxidation, a reduced PAH mechanism was developed using global sensitivity analysis for representative oxygenated including methanol, n-butanol, methyl butanoate, dimethyl ether. The new chemical constructed 140 species 448 reactions. characteristics different were reproduced by...

10.1021/acs.energyfuels.0c00300 article EN Energy & Fuels 2020-03-11

Due to the specific prediction requirements in combustion simulations, reduced chemical mechanism developed focusing on particular applications is usually needed. A systematic method for reduction orientated toward proposed this work. The process divided into two parts large-molecule fuels, including of fuel-specific sub-mechanism and C0–C4 sub-mechanisms. In first part, path sensitivity analysis global are used identify key reaction classes sub-mechanism, then rate production (ROP) genetic...

10.1080/13647830.2022.2035824 article EN Combustion Theory and Modelling 2022-02-14

As a promising alternative biofuel, 2,5-dimethylfuran (DMF) has caused great concern recently. In this research, new skeletal oxidation mechanism for DMF is built by merging the decoupling methodology with reaction class-based global sensitivity analysis. First, and path analyses are used to identify dominant classes in fuel-related submechanism of DMF. Then, important isomers chosen rate production addition, vertical lumping performed obtain reactions based on steady-state assumption...

10.1021/acs.energyfuels.0c03086 article EN Energy & Fuels 2020-11-26

A quantitative assessment method of reduced chemical mechanisms based on the similarity evaluation is proposed in this study with special focus inherent kinetic characteristics. Two mechanisms, model R1 and R2, are investigated regard to ignition delay times under engine-relevant conditions, which both derived from same detailed n-heptane mechanism, D. The uncertainty analysis global sensitivity first used investigate each C0–C7 submechanism species containing maximum carbon number. Then,...

10.1021/acs.energyfuels.0c04064 article EN Energy & Fuels 2021-02-15

The uncertainties existing in the parameters of chemical kinetic models have a non-negligible influence on model predictions. It is necessary to conduct quantitative uncertainty analysis explore each parameter mechanism To comprehensively consider effect reaction rate parameters, thermodynamic and transport predictions, local sensitivity analysis, local-sensitivity-based (LSUA), random-sampling high dimensional representation (RS-HDMR) method were coupled investigate propagation calculated...

10.1080/13647830.2023.2169637 article EN Combustion Theory and Modelling 2023-02-01
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