Search Results - "Hong, G"

Estimation of time-varying reproduction numbers underlying epidemiological processes: A new statistical tool for the COVID-19 pandemic by Hong, Hyokyoung G, Li, Yi

“…The coronavirus pandemic has rapidly evolved into an unprecedented crisis. The susceptible-infectious-removed (SIR) model and its variants have been used for…”
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Numerical Investigation of the Free and Ducted Fuel Injections under Compression Ignition Conditions by Liu, Xinlei, Mohan, Balaji, Im, Hong G

“…A ducted fuel injection (DFI) strategy has been proposed as an efficient approach to reduce the soot emission in direct-injection compression ignition engines…”
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A consistent soot nucleation model for improved prediction of strain rate sensitivity in ethylene/air counterflow flames by Quadarella, Erica, Guo, Junjun, Im, Hong G.

“…An improved consistent soot nucleation model was proposed and tested on ethylene counterflow flames at different strain rates. The main objective of the…”
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Auto-ignitive deflagration speed of methane (CH4) blended dimethyl-ether (DME)/air mixtures at stratified conditions by Desai, Swapnil, Sankaran, Ramanan, Im, Hong G.

“…Front propagation speeds from fully resolved unsteady one dimensional simulations with dimethyl-ether (DME)/methane (CH4)/air mixtures under engine relevant…”
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Nutrient budgets for large Chinese estuaries by Liu, S. M., Hong, G.-H., Zhang, J., Ye, X. W., Jiang, X. L.

“…Chinese rivers deliver about 5–10% of global freshwater input and 15–20% of the global continental sediment to the world ocean. We report the riverine fluxes…”
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Computational comparison of the conventional diesel and hydrogen direct-injection compression-ignition combustion engines by Babayev, Rafig, Andersson, Arne, Serra Dalmau, Albert, Im, Hong G., Johansson, Bengt

“…[Display omitted] •Molar expansion accounts for 5–10% of the total work produced by a DICI H2 engine.•H2 pilot injections help with ignition and may eliminate…”
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Hydrogen double compression-expansion engine (H2DCEE): A sustainable internal combustion engine with 60%+ brake thermal efficiency potential at 45 bar BMEP by Babayev, Rafig, Im, Hong G., Andersson, Arne, Johansson, Bengt

“…•Hydrogen-fueled internal combustion engine may achieve 60% brake thermal efficiency.•The double compression-expansion concept may be necessary for such…”
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Effects of Radiation Model on Soot Modeling in Laminar Coflow Diffusion Flames at Elevated Pressure by Guo, Junjun, Im, Hong G.

“…Detailed numerical simulations of C 2 H 4 /Air coflow laminar sooting flames at atmospheric and elevated pressures are performed with fully coupled flow,…”
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Numerical investigation of pressure effects on soot formation in laminar coflow ethylene/air diffusion flames by Guo, Junjun, Tang, Yihao, Raman, Venkat, Im, Hong G.

“…•Fully-resolved simulations with detailed reaction mechanism and soot aerosol model.•Semi-empirical model and detailed moment-based soot model are…”
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Local flame displacement speeds of hydrogen-air premixed flames in moderate to intense turbulence by Yuvraj, Song, Wonsik, Dave, Himanshu, Im, Hong G., Chaudhuri, Swetaprovo

“…Comprehensive knowledge of local flame displacement speed, Sd, in turbulent premixed flames is crucial towards the design and development of hydrogen fuelled…”
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An adaptive time-integration scheme for stiff chemistry based on computational singular perturbation and artificial neural networks by Malpica Galassi, Riccardo, Ciottoli, Pietro Paolo, Valorani, Mauro, Im, Hong G.

“…We leverage the computational singular perturbation (CSP) theory to develop an adaptive time-integration scheme for stiff chemistry based on a local,…”
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Assessment of weighted-sum-of-gray-gases models for gas-soot mixture in jet diffusion flames by Guo, Junjun, Shen, Lingqi, He, Xiaoyi, Liu, Zhaohui, Im, Hong G.

“…•A WSGG model for arbitrary concentrations of CO2 and H2O is developed.•Two modeling methods (mixture modeling and superposition method) for WSGGM are…”
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Anisotropy of Reynolds Stresses and Their Dissipation Rates in Lean H2-Air Premixed Flames in Different Combustion Regimes by Chakraborty, Nilanjan, Ghai, Sanjeev Kumar, Im, Hong G.

“…The interrelation between Reynolds stresses and their dissipation rate tensors for different Karlovitz number values was analysed using a direct numerical…”
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The origin of CEMA and its relation to CSP by Goussis, Dimitris A., Im, Hong G., Najm, Habib N., Paolucci, Samuel, Valorani, Mauro

“…There currently exist two methods for analysing an explosive mode introduced by chemical kinetics in a reacting process: the Computational Singular…”
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Varying‐coefficients for regional quantile via KNN‐based LASSO with applications to health outcome study by Park, Seyoung, Lee, Eun Ryung, Hong, Hyokyoung G.

“…Health outcomes, such as body mass index and cholesterol levels, are known to be dependent on age and exhibit varying effects with their associated risk…”
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A Novel Method for Applying Reduced Graphene Oxide Directly to Electronic Textiles from Yarns to Fabrics by Yun, Yong Ju, Hong, Won G., Kim, Wan-Joong, Jun, Yongseok, Kim, Byung Hoon

“…Conductive, flexible, and durable reduced RGO textiles with a facile preparation method are presented. BSA proteins serve as universal adhesives for improving…”
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Numerical simulation of combustion and soot under partially premixed combustion of low-octane gasoline by An, Yanzhao, Jaasim, Mohammed, Vallinayagam, R., Vedharaj, S., Im, Hong G., Johansson, Bengt

“…•In-cylinder combustion and soot particle with PAHs as precursors is modeled and estimated.•The SOI is advanced to −30 CAD (aTDC) to achieve the partially…”
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Changing marine biosphere in the West Pacific Ocean by G, Hong, F, Zuo, K, Qin

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Experimental and computational studies of methanol and ethanol preignition behind reflected shock waves by Figueroa-Labastida, Miguel, Luong, Minh B., Badra, Jihad, Im, Hong G., Farooq, Aamir

“…Experimental and computational investigations are carried out to identify the generalized criterion to predict the preignition tendency of methanol and ethanol…”
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Experimental and numerical study of polycyclic aromatic hydrocarbon formation in ethylene laminar co-flow diffusion flames by Jin, Hanfeng, Guo, Junjun, Li, Tianyu, Zhou, Zhongyue, Im, Hong G., Farooq, Aamir

“…•Measurements of radicals and odd carbon number aromatics in co-flow ethylene flames.•Fully-resolved simulations with detailed PAH model.•Chemical kinetic…”
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