Publications

2025 April	Numerical and experimental analysis of a dual-channel electric motor housing cooling system. Chanyoung Kim, Woohyuk Sim, Jeongsub Yoon, Tonghun Lee, and Jihyung Yoo. Applied Thermal Engineering. [abstract] Thermal performance of a dual-channel water cooling system embedded in an electric motor housing was analyzed using numerical methods and verified experimentally. The cooling system was designed to reduce coolant pressure drops as well as allowed for flexible cooling strategies of temperature-sensitive interior permanent magnet synchronous motor components. The cooling scheme was analyzed against a comparable single-channel cooling scheme and optimal coolant flow rates were determined for all four conditions that were considered. A motor housing embedded with the dual-channel cooling scheme was then fabricated and the thermal responses of permanent magnets in the rotor and the coils in the stator were directly measured in-situ during motor operations. The results agreed well with those of numerical analyses with a maximum difference of 4.2 °C. Overall, the dual-channel scheme provided improved cooling performance with smaller hydraulic loss compared to the single-channel scheme in both transient and steady state operations.
2025 March	In-situ tailpipe soot emission monitoring for diesel engine exhaust using a quartz-enhanced photoacoustic spectroscopy sensor. Joonhyeok Hong, Jeongwoon Han, Tonghun Lee, and Jihyung Yoo. Measurement.
2025 January	State of health estimation of lithium-ion battery cell based on optical thermometry with physics-informed machine learning. Jeongwoo Jang, Junhyoung Jo, Jinsu Kim, Seungmin Lee, Tonghun Lee, and Jihyung Yoo. Engineering Applications of Artificial Intelligence.
2025 January	Direct motor rotor pyrometry using mid-infrared hollow waveguide. Woohyuk Sim, Chanyoung Kim, Young-Doo Yoon, Tonghun Lee, and Jihyung Yoo. Measurement.
2024 November	Thermal conductivity estimation using Physics-Informed Neural Networks with limited data. Junhyoung Jo, Yeonhwi Jeong, Jinsu Kim, and Jihyung Yoo. Engineering Applications of Artificial Intelligence.
2024 September	Nitric Oxide and Temperature Measurement Using Laser Absorption Spectroscopy in Arc-Heater Plenum. Isabella Gessman, Gyu Sub Lee, Nozomu Kato, Tonghun Lee, Shruti Ghanekar, Keunsoo Kim, and Jihyung Yoo. AIAA Journal.
2024 July	Combined analysis of thermofluids and electromagnetism using physics-informed neural networks. Yeonhwi Jeong, Junhyoung Jo, Tonghun Lee, and Jihyung Yoo. Engineering Applications of Artificial Intelligence.
2023 December	CuO-SnO2 nanocomposites: Efficient and cost-effective electrocatalysts for urea oxidation. TVM Sreekanth, K Prasad, Jihyung Yoo, Jonghoon Kim, and Kisoo Yoo. Materials Letters.
2023 November	A remote FBG-OFDR thermometry sensor for EV energy systems. Jin Su Kim, Seungmin Lee, Tonghun Lee, and Jihyung Yoo. Measurement.
2023 October	Carbon Dioxide Concentration Estimation in Nonuniform Temperature Fields Based on Single-Pass Tunable Diode Laser Absorption Spectroscopy. Junggon Choi, Cheolwoo Bong, Jihyung Yoo, and Moon Soo Bak. Applied Spectroscopy 77(10).
2023 August	CuWO4 as a cost-effective electrocatalyst for urea oxidation reaction. TVM Sreekanth, K Prasad, Jihyung Yoo, Jonghoon Kim, and Kisoo Yoo. Inorganic Chemistry Communications.
2023 July	Core @ shell nanorods for enhancing supercapacitor performance: ZnWO4 nanorods decorated with colloidal SnO2 quantum dots. Bathula Babu, Sunil Babu Eadi, Jihyung Yoo, Hi-Deok Lee, and Kisoo Yoo. Materials Letters.
2023 May	Integration of binary Ta2O5 nanoparticles on ternary MnWO4 nanorods as novel electrocatalysts with enhanced activity toward methanol oxidation reaction. TVM Sreekanth, E Praveen Kumar, R Sindhu, J Yoo, J Kim, and K Yoo. International Journal of Hydrogen Energy.
2023 May	ZIF-8 @ CoFe2O4 as a highly efficient bifunctional electrocatalyst for the methanol oxidation and oxygen evolution reactions. TVM Sreekanth, K Prasad, J Yoo, J Kim, and K Yoo. Catalysis Science & Technology 13(11).
2023 April	Recent Progress in the Use of SnO2 Quantum Dots: From Synthesis to Photocatalytic Applications. Babu Bathula, Thirumala Rao Gurugubelli, Jihyung Yoo, and Kisoo Yoo. Catalysts 13(4).
2023 April	Quantification of Elevated Hydrogen Cyanide (HCN) Concentration Typical in a Residential Fire Environment Using Mid-IR Tunable Diode Laser. Shruti Ghanekar, Gavin P Horn, Richard M Kesler, Rajavasanth Rajasegar, Jihyung Yoo, and Tonghun Lee. Applied Spectroscopy 77(4).
2023 January	A numerical study of enhanced lithium-ion battery cooling using a module insert. Jeonggwan Han, Wonjin Ko, Myung-Seop Lim, Tonghun Lee, and Jihyung Yoo. Case Studies in Thermal Engineering.
2022 September	Development of a distributed optical thermometry technique for battery cells. Seong-O Yang, Seungmin Lee, Seok Ho Song, and Jihyung Yoo. International Journal of Heat and Mass Transfer.
2022 May	Modal Decomposition Analysis of Combustion Instability Due to External Perturbation in a Mesoscale Burner Array. Jeongan Choi, Rajavasanth Rajasegar, Qili Liu, Tonghun Lee, and Jihyung Yoo. Journal of Engineering for Gas Turbines and Power 144(5).
2022 January	Torque Ripple Reduction of BLDC Traction Motor of Electric Wheelchair for Ride Comfort Improvement. Dae-Kee Kim, Dong-Min Kim, Jin-Cheol Park, Soo-Gyung Lee, Jihyung Yoo, and Myung-Seop Lim. Journal of Electrical Engineering \& Technology 17(1).
2021 October	Effects of hydrogen enhancement on mesoscale burner array flame stability under acoustic perturbations. Jeongan Choi, Wooyoung Lee, Rajavasanth Rajasegar, Tonghun Lee, and Jihyung Yoo. International Journal of Hydrogen Energy 46(74).
2021 July	Jet A Combustion in a Mesoscale Swirl-Stabilized Combustor Array. Jeongan Choi, Rajavasanth Rajasegar, Qili Liu, Tonghun Lee, and Jihyung Yoo. Energy and Fuels.
2021 July	Hydrogen enhancement on a mesoscale swirl stabilized burner array. Jeongan Choi, Rajavasanth Rajasegar, Wooyoung Lee, Tonghun Lee, and Jihyung Yoo. International Journal of Hydrogen Energy 46(46).
2021 June	High-speed supercontinuum laser absorption spectroscopy of light hydrocarbons in elevated pressures and temperatures. Michael Halloran, Jeongan Choi, Tonghun Lee, and Jihyung Yoo. Measurement Science and Technology 32(9).
2021 March	TDLAS measurements of temperature and water vapor concentration in a flameless MILD combustor. Cheolwoo Bong, Jungwun Lee, Hojoong Sun, Jihyung Yoo, and Moon Soo Bak. Measurement Science and Technology 32(5).
2020 July	Combined use of TDLAS and LIBS for reconstruction of temperature and concentration fields. Jungwun Lee, Cheolwoo Bong, Jihyung Yoo, and Moon Soo Bak. Optics Express 28(14).
2020 April	Development and characterization of swirl-stabilized diffusion mesoscale burner array. Jeongan Choi, Rajavasanth Rajasegar, Tonghun Lee, and Jihyung Yoo. Applied Thermal Engineering 175(115373).
2020 March	Simultaneous Measurements of Light Hydrocarbons Using Supercontinuum Laser Absorption Spectroscopy. Michael Halloran, Nicholas Traina, Jeongan Choi, Tonghun Lee, and Jihyung Yoo. Energy & Fuels 34(3).
2020 February	Effect of flame interaction on swirl-stabilized mesoscale burner array performance. Jeongan Choi, Rajavasanth Rajasegar, Constandinos M Mitsingas, Qili Liu, Tonghun Lee, and Jihyung Yoo. Energy 192(116661).
2019 January	Mesoscale burner array performance analysis. Rajavasanth Rajasegar, Jeongan Choi, Brendan McGann, Anna Oldani, Tonghun Lee, Stephen D Hammack, Campbell D Carter, and Jihyung Yoo. Combustion and Flame.
2018 August	Comprehensive combustion stability analysis using dynamic mode decomposition. Rajavasanth Rajasegar, Jeongan Choi, Brendan McGann, Anna Oldani, Tonghun Lee, Stephen D Hammack, Campbell D Carter, and Jihyung Yoo. Energy & Fuels 32(9).
2018 June	Development and characterization of additive-manufactured mesoscale combustor array. Rajavasanth Rajasegar, Constandinos M Mitsingas, Eric K Mayhew, Qili Liu, Tonghun Lee, and Jihyung Yoo. Journal of Energy Engineering 144(3).
2016 November	Proper orthogonal decomposition for analysis of plasma-assisted premixed swirl-stabilized flame dynamics. Rajavasanth Rajasegar, Constandinos M Mitsingas, Eric K Mayhew, Jihyung Yoo, and Tonghun Lee. IEEE Transactions on Plasma Science 44(12).
2016 June	Minute concentration measurements of simple hydrocarbon species using supercontinuum laser absorption spectroscopy. Jihyung Yoo, Nicholas Traina, Michael Halloran, and Tonghun Lee. Applied Spectroscopy 70(6).
2016 April	High-speed multiplexed spatiotemporally resolved measurements of exhaust gas recirculation dynamics in a multi-cylinder engine using laser absorption spectroscopy. Jihyung Yoo, Vitaly Prikhodko, James E Parks, Anthony Perfetto, Sam Geckler, and William P Partridge. Applied spectroscopy 70(4).
2015 September	Fast Spatially-Resolved EGR Distrubution Measurements in an Internal Combustion Engine using Absorption Spectroscopy. Jihyung Yoo, Vitaly Prikhodko, James E Parks, Anthony Perfetto, Sam Geckler, and William P Partridge. Applied Spectroscopy 69(9).
2013 December	JP-5 and HRJ-5 autoignition characteristics and surrogate modeling. Casey Allen, Daniel Valco, Elisa Toulson, Jihyung Yoo, and Tonghun Lee. Energy & fuels 27(12).
2011 November	Near-wall imaging using toluene-based planar laser-induced fluorescence in shock tube flow. Jihyung Yoo, D Mitchell, DF Davidson, and RK Hanson. Shock Waves 21(6).
2010 October	Planar laser-induced fluorescence imaging in shock tube flows. Jihyung Yoo, Daniel Mitchell, DF Davidson, and RK Hanson. Experiments in fluids 49(4).
2008 November	Fluorescence quantum yield of carbon dioxide for quantitative UV laser-induced fluorescence in high-pressure flames. Tonghun Lee, WG Bessler, Jihyung Yoo, C Schulz, JB Jeffries, and RK Hanson. Applied Physics B 93(2-3).
2008 June	Detection of trace nitric oxide concentrations using 1-D laser-induced fluorescence imaging. Jihyung Yoo, T Lee, JB Jeffries, and RK Hanson. Applied Physics B 91(3-4).