Research Output 1979 2019

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2019

Detection Improvement of Unburned Carbon Content in Fly Ash Flow Using LIBS with a Two-Stage Cyclone Measurement System

Wang, Z., Liu, R., Deguchi, Y., Tanaka, S., Tainaka, K., Tanno, K., Watanabe, H., Yan, J. & Liu, J., Aug 15 2019, In : Energy and Fuels. 33, 8, p. 7805-7812 8 p.

Research output: Contribution to journalArticle

Electromagnetic wave attenuation
Boiler control
Coal Ash
Atomic emission spectroscopy
Laser induced breakdown spectroscopy
Coal combustion
Fuel burners
Turbulent flow
Reaction rates
Computational fluid dynamics

Experimental and numerical analysis of turbulent pulverized coal flame in a coaxial burner

Ahn, S., Tainaka, K., Watanabe, H. & Kitagawa, T., Jul 15 2019, In : Energy. 179, p. 727-735 9 p.

Research output: Contribution to journalArticle

Fuel burners
Numerical analysis
Coal
Momentum transfer
Coal combustion

Flamelet Model for a Three-Feed Non-premixed Combustion System with a Diluent Stream: Analysis and Validation of Quasi-Two-Dimensional Flamelet (Q2DF) Models

Yu, P., Watanabe, H., Zhang, W., Kurose, R. & Kitagawa, T., May 16 2019, In : Energy and Fuels. 33, 5, p. 4640-4650 11 p.

Research output: Contribution to journalArticle

Direct numerical simulation
Temperature
1 Citation (Scopus)

Flame-spread limit from interactive burning droplets in microgravity

Yoshida, Y., Iwai, K., Nagata, K., Seo, T., Mikami, M., Moriue, O., Sakashita, T., Kikuchi, M., Suzuki, T. & Nokura, M., Jan 1 2019, In : Proceedings of the Combustion Institute. 37, 3, p. 3409-3416 8 p.

Research output: Contribution to journalArticle

Microgravity
microgravity
flames
life (durability)
fibers
Coal
Polycyclic Aromatic Hydrocarbons
Large eddy simulation
Polycyclic aromatic hydrocarbons
Anthracene

Prediction of soot formation characteristics in a pulverized-coal combustion field by large eddy simulations with the TDP model

Takahashi, H., Hashimoto, N., Watanabe, H., Kurose, R. & Fujita, O., Jan 1 2019, In : Proceedings of the Combustion Institute. 37, 3, p. 2883-2891 9 p.

Research output: Contribution to journalArticle

Soot
Coal combustion
Large eddy simulation
soot
large eddy simulation
1 Citation (Scopus)

Simultaneous imaging of Mie scattering, PAHs laser induced fluorescence and soot laser induced incandescence to a lab-scale turbulent jet pulverized coal flame

Hayashi, J., Hashimoto, N., Nakatsuka, N., Tainaka, K., Tsuji, H., Tanno, K., Watanabe, H., Makino, H. & Akamatsu, F., Jan 1 2019, In : Proceedings of the Combustion Institute. 37, 3, p. 3045-3052 8 p.

Research output: Contribution to journalArticle

incandescence
Soot
turbulent jets
Coal
Polycyclic Aromatic Hydrocarbons
1 Citation (Scopus)

Unburned carbon measurement in fly ash using laser-induced breakdown spectroscopy with short nanosecond pulse width laser

Liu, R., Deguchi, Y., Nan, W., Hu, R., Wang, Z., Fujita, Y., Tanaka, S., Tainaka, K., Tanno, K., Watanabe, H., Liu, J. & Yan, J., Jan 1 2019, In : Advanced Powder Technology.

Research output: Contribution to journalArticle

Coal Ash
Laser induced breakdown spectroscopy
Fly ash
Laser pulses
Carbon
2018
3 Citations (Scopus)

Experimental and numerical investigation of effects of particle shape and size distribution on particles’ dispersion in a coaxial jet flow

Zhang, W., Tainaka, K., Ahn, S., Watanabe, H. & Kitagawa, T., Oct 1 2018, In : Advanced Powder Technology. 29, 10, p. 2322-2330 9 p.

Research output: Contribution to journalArticle

Coal
Velocity measurement
Polymers
Turbulence
Experiments

Lesと拡張 CPD モデルを用いた高炉羽口部の微粉炭燃焼挙動の予測

Translated title of the contribution: Prediction of pulverized coal combustion behavior around tuyere by using LES and extended CPD modelKawashima, T., Murao, A., Yamamoto, N., Ando, M., Okada, J. & Watanabe, H., Dec 1 2018, In : Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan. 104, 12, p. 766-775 10 p.

Research output: Contribution to journalArticle

Open Access
Coal
Coal combustion
coal
predictions
Large eddy simulation
1 Citation (Scopus)

Numerical investigation of effects of particle shape on dispersion in an isotropic turbulent flow

Zhang, W., Watanabe, H. & Kitagawa, T., Sep 1 2018, In : Advanced Powder Technology. 29, 9, p. 2048-2060 13 p.

Research output: Contribution to journalArticle

Turbulent flow
Gases
Fluids
Flammability
Direct numerical simulation

Optical diagnostics for pulverized coal jet flame

Hayashi, J., Akamatsu, F., Nakatsuka, N., Hashimoto, N., Watanabe, H., Kurose, R., Tainaka, K., Tsuji, H. & Makino, H., Jan 1 2018, In : Journal of the Society of Powder Technology, Japan. 55, 3, p. 138-146 9 p.

Research output: Contribution to journalArticle

Coal
Lasers
3 Citations (Scopus)

Prediction of hot coke oven gas reforming by LES coupled with the extended flamelet/progress variable approach

Yu, P., Norinaga, K., Watanabe, H. & Kitagawa, T., Nov 1 2018, In : Fuel. 231, p. 234-243 10 p.

Research output: Contribution to journalArticle

Coke ovens
Large eddy simulation
Reforming reactions
Gases
Polycyclic Aromatic Hydrocarbons
2017
5 Citations (Scopus)

Direct numerical simulation of ignition of a single particle freely moving in a uniform flow

Zhang, W., Watanabe, H. & Kitagawa, T., Nov 1 2017, In : Advanced Powder Technology. 28, 11, p. 2893-2902 10 p.

Research output: Contribution to journalArticle

Direct numerical simulation
Ignition
Gases
Experiments
Methane
6 Citations (Scopus)

Effect of different fuel NO models on the prediction of NO formation/reduction characteristics in a pulverized coal combustion field

Hashimoto, N., Watanabe, H., Kurose, R. & Shirai, H., Jan 1 2017, In : Energy. 118, p. 47-59 13 p.

Research output: Contribution to journalArticle

Coal combustion
Bituminous coal
Furnaces
Moisture
Oxygen
8 Citations (Scopus)

Extension of the chemical percolation devolatilization model for predicting formation of tar compounds as soot precursor in coal gasification

Umemoto, S., Kajitani, S., Miura, K., Watanabe, H. & Kawase, M., Jan 1 2017, In : Fuel Processing Technology. 159, p. 256-265 10 p.

Research output: Contribution to journalArticle

Soot
Tars
Coal gasification
Tar
Coal
6 Citations (Scopus)

Flame spread of droplet-cloud elements with two-droplet interaction in microgravity

Mikami, M., Watari, H., Hirose, T., Seo, T., Saputro, H., Moriue, O. & Kikuchi, M., Jan 1 2017, In : Journal of Thermal Science and Technology. 12, 2, JTST0028.

Research output: Contribution to journalArticle

Microgravity
microgravity
flames
interactions
temperature distribution
13 Citations (Scopus)

Numerical analysis of particle dispersion and combustion characteristics on a piloted coaxial pulverized coal jet flame

Ahn, S., Tanno, K. & Watanabe, H., Jan 1 2017, In : Applied Thermal Engineering. 124, p. 1194-1202 9 p.

Research output: Contribution to journalArticle

Numerical analysis
Coal
Gases
Momentum transfer
Stream flow
10 Citations (Scopus)

Numerical investigation of effects of CO2recirculation in an oxy-fuel IGCC on gasification characteristics of a two-stage entrained flow coal gasifier

Watanabe, H., Ahn, S. & Tanno, K., Jan 1 2017, In : Energy. 118, p. 181-189 9 p.

Research output: Contribution to journalArticle

Gasification
Coal
Fuel systems
Air
Conversion efficiency
2016
23 Citations (Scopus)

Experimental and theoretical analysis of cellular instability in lean H2-CH4-air flames at elevated pressures

Okafor, E. C., Nagano, Y. & Kitagawa, T., Apr 27 2016, In : International Journal of Hydrogen Energy. 41, 15, p. 6581-6592 12 p.

Research output: Contribution to journalArticle

flames
Hydrogen
air
hydrogen
Air
1 Citation (Scopus)

Improved Measurement Characteristics of Elemental Compositions Using LaserInduced Breakdown Spectroscopy

Wang, Z., Deguchi, Y., Katsumori, S., Ikutomo, A., Yan, J., Liu, J., Tainaka, K., Tanno, K., Watanabe, H. & Kurose, R., Jan 1 2016, In : Spectroscopy (Santa Monica). 31, 1, p. 22-35 14 p.

Research output: Contribution to journalArticle

Coal Ash
Laser induced breakdown spectroscopy
laser-induced breakdown spectroscopy
gas spectroscopy
breakdown
17 Citations (Scopus)
Coal
Coal combustion
Numerical analysis
Furnaces
Heat transfer
2 Citations (Scopus)

Numerical investigation of reaction kinetics of coal volatiles with a detailed chemistry and its simplification

Ahn, S., Watanabe, H., Shoji, T. & Umemoto, S., May 26 2016, In : Journal of Thermal Science and Technology. 11, 1, JTST0014.

Research output: Contribution to journalArticle

Coal
Hydrocarbons
simplification
Reaction kinetics
coal
5 Citations (Scopus)

Primary soot particle distributions in a combustion field of 4 kw pulverized coal jet burner measured by time resolved laser induced incandescence (TiRe-LII)

Hashimoto, N., Hayashi, J., Nakatsuka, N., Tainaka, K., Umemoto, S., Tsuji, H., Akamatsu, F., Watanabe, H. & Makino, H., Jan 1 2016, In : Journal of Thermal Science and Technology. 11, 3, JTST0049.

Research output: Contribution to journalArticle

incandescence
Soot
Coal
burners
soot
2015
4 Citations (Scopus)

Effects of parcel modeling on particle dispersion and interphase transfers in a turbulent mixing layer

Watanabe, H., Uesugi, D. & Muto, M., Nov 1 2015, In : Advanced Powder Technology. 26, 6, p. 1719-1728 10 p.

Research output: Contribution to journalArticle

Momentum transfer
Mass transfer
Direct numerical simulation
Particle size analysis
11 Citations (Scopus)
Coke ovens
Carbon Monoxide
Gases
oxidation
Oxidation
1 Citation (Scopus)

Simultaneous Observation of Combustion in Optical Rotary Engine by Bottom View and Side View

Karatsu, Y., Minota, S., Hashimoto, H., Moriue, O., Murase, E., Yun, J. H. & Kagawa, R., Sep 1 2015, In : SAE Technical Papers. 2015-September, September

Research output: Contribution to journalArticle

Rotary engines
Rotors
Engines
High speed cameras
2014

A study on the direct control of the start of homogeneous charge compression ignition combustion by pulsed flame jet with rapid compression expansion machine

Murase, E., Moriue, O., Hashimoto, H., Nakashima, F. & Komai, Y., Jan 1 2014, In : International Journal of Engine Research. 15, 5, p. 549-556 8 p.

Research output: Contribution to journalArticle

Plant expansion
Ignition
Combustion chambers
Gases
41 Citations (Scopus)

Effects of hydrogen concentration on premixed laminar flames of hydrogen-methane-air

Okafor, E. C., Hayakawa, A., Nagano, Y. & Kitagawa, T., Feb 4 2014, In : International Journal of Hydrogen Energy. 39, 5, p. 2409-2417 9 p.

Research output: Contribution to journalArticle

premixed flames
equivalence
Methane
methane
Hydrogen
2013
1 Citation (Scopus)

A study on equivalence-ratio dependence of minimum ignition energy based on initial burning velocity

Murase, E., Moriue, O., Hashimoto, H. & Matsuzaki, I., Oct 14 2013, In : Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B. 79, 805, p. 1839-1847 9 p.

Research output: Contribution to journalArticle

ignition
Ignition
equivalence
flames
energy
39 Citations (Scopus)

Two-dimensional direct numerical simulation of spray flames - Part 1: Effects of equivalence ratio, fuel droplet size and radiation, and validity of flamelet model

Fujita, A., Watanabe, H., Kurose, R. & Komori, S., Feb 1 2013, In : Fuel. 104, p. 515-525 11 p.

Research output: Contribution to journalArticle

Direct numerical simulation
Radiation
Heat transfer
Fluids
Radiation effects
2012
9 Citations (Scopus)

Analysis of turbulent burning velocity of spherically propagating premixed flame with effective turbulence intensity

Hayakawa, A., Miki, Y., Nagano, Y. & Kitagawa, T., Nov 21 2012, In : Journal of Thermal Science and Technology. 7, 4, p. 507-521 15 p.

Research output: Contribution to journalArticle

premixed flames
Turbulence
turbulence
flames
turbulent flames
2010
1 Citation (Scopus)

Effects of pressure on laminar and turbulent burning velocities of ethanol premixed flames

Ohara, K., Tsukikawa, M., Araki, Y., Hayakawa, A., Kobayashi, S., Nagano, Y. & Kitagawa, T., Dec 1 2010, In : Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy. 89, 11, p. 1088-1094 7 p.

Research output: Contribution to journalArticle

Ethanol
Turbulence
Internal combustion engines
Air
Experiments
flames
Turbulence
turbulence
Hydrogen
equivalence
2009
5 Citations (Scopus)

Ignition and combustion of rotary engine - Effect of spark-plug arrangement on flame propagation

Okui, N., Takahashi, Y., Kagawa, R., Tabata, M., Moriue, O. & Murase, E., Dec 1 2009, In : Review of Automotive Engineering. 30, 4, p. 379-385 7 p.

Research output: Contribution to journalArticle

Wankel engines
Rotary engines
Spark plugs
Ignition
Visualization
53 Citations (Scopus)

Numerical simulations of pulverized coal combustion

Kurose, R., Watanabe, H. & Makino, H., Jan 1 2009, In : KONA Powder and Particle Journal. 27, p. 144-156 13 p.

Research output: Contribution to journalArticle

Coal
Coal combustion
Ashes
Computer simulation
Computational fluid dynamics
flames
Hydrogen
equivalence
air
hydrogen
2008
77 Citations (Scopus)

Turbulent burning velocity of hydrogen-air premixed propagating flames at elevated pressures

Kitagawa, T., Nakahara, T., Maruyama, K., Kado, K., Hayakawa, A. & Kobayashi, S., Oct 2008, In : International Journal of Hydrogen Energy. 33, 20, p. 5842-5849 8 p.

Research output: Contribution to journalArticle

premixed flames
Lewis numbers
Hydrogen
air
hydrogen
2006
2 Citations (Scopus)
sprayers
equivalence
flames
Evaporation
dissipation
Chemiluminescence
chemiluminescence
Spectrum analysis
ignition
spectrum analysis
ignition
Ignition
Computer simulation
flames
cells
2005

Combustion characteristics of partially premixed n-Decane spray jets

Mikami, M., Yamamoto, K., Nakamoto, K., Moriue, O. & Kojima, N., Jan 1 2005, In : Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B. 71, 701, p. 344-350 7 p.

Research output: Contribution to journalArticle

sprayers
flames
Fuel burners
equivalence
premixed flames
16 Citations (Scopus)
Propane
premixed flames
propane
flames
air
4 Citations (Scopus)
Propane
propane
flames
air
Air
4 Citations (Scopus)

Flame inertia into lean region in stratified hydrogen mixture

Kitagawa, T., Kido, H., Nakamura, N. & Aishima, M., Oct 1 2005, In : International Journal of Hydrogen Energy. 30, 13-14, p. 1457-1464 8 p.

Research output: Contribution to journalArticle

inertia
flames
Hydrogen
hydrogen
hydrogen engines

OH fluorescence images of Pulsed Flame Jet in a swirl flow

Murase, E., Hanada, K. & Hotta, K., Jan 1 2005, In : Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B. 71, 701, p. 316-321 6 p.

Research output: Contribution to journalArticle

ignition systems
igniters
electric sparks
Fluorescence
Ignition systems
2004
flame propagation
Hydrogen
propagation
flames
hydrogen