Hiroaki Watanabe &ndash; Research Output

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 journal › Article

Coal Ash

Laser induced breakdown spectroscopy

Fly ash

Carbon

Plasmas

Effect of devolatilization model on flame structure of pulverized coal combustion in a jet-burner system

Ahn, S., Watanabe, H. & Kitagawa, T., Apr 1 2019, In : Journal of Mechanical Science and Technology. 33, 4, p. 1973-1979 7 p.

Research output: Contribution to journal › Article

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 journal › Article

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 journal › Article

Direct numerical simulation

Temperature

Large eddy simulation of pulverized coal combustion in multi-burner system–effect of in-furnace blending method on NO emission

Muto, M., Watanabe, H. & Kurose, R., Dec 2019, In : Advanced Powder Technology. 30, 12, p. 3153-3162 10 p.

Research output: Contribution to journal › Article

Open Access

Coal

Coal combustion

Large eddy simulation

Fuel burners

Furnaces

Numerical Investigation on the Detailed Structure of a Coaxial Coal Jet Flame Using Large-Eddy Simulation with Elementary Reactions

Ahn, S., Watanabe, H. & Kitagawa, T., May 16 2019, In : Energy and Fuels. 33, 5, p. 4621-4631 11 p.

Research output: Contribution to journal › Article

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 journal › Article

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 journal › Article

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 journal › Article

Coal Ash

Laser induced breakdown spectroscopy

Fly ash

Laser pulses

Carbon

2018

4 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 journal › Article

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 journal › Article

Open Access

Coal

Coal combustion

coal

predictions

Large eddy simulation

2 Citations (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 journal › Article

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 journal › Article

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 journal › Article

Coke ovens

Large eddy simulation

Reforming reactions

Gases

Polycyclic Aromatic Hydrocarbons

2017

7 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 journal › Article

Direct numerical simulation

Ignition

Gases

Experiments

Methane

7 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 journal › Article

Coal combustion

Bituminous coal

Furnaces

Moisture

Oxygen

9 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 journal › Article

Soot

Tars

Coal gasification

Tar

Coal

14 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 journal › Article

Numerical analysis

Coal

Gases

Momentum transfer

Stream flow

12 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 journal › Article

Gasification

Coal

Fuel systems

Air

Conversion efficiency

2016

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 journal › Article

Coal Ash

Laser induced breakdown spectroscopy

laser-induced breakdown spectroscopy

gas spectroscopy

breakdown

17 Citations (Scopus)

Numerical analysis on effect of furnace scale on heat transfer mechanism of coal particles in pulverized coal combustion field

Hashimoto, N. & Watanabe, H., May 1 2016, In : Fuel Processing Technology. 145, p. 20-30 11 p.

Research output: Contribution to journal › Article

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 journal › Article

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 journal › Article

incandescence

Soot

Coal

burners

soot

2015

9 Citations (Scopus)

A CFD study on the reacting flow of partially combusting hot coke oven gas in a bench-scale reformer

Li, C., Appari, S., Tanaka, R., Hanao, K., Lee, Y., Kudo, S., Hayashi, J. I., Janardhanan, V. M., Watanabe, H. & Norinaga, K., Jul 21 2015, In : Fuel. 159, p. 590-598 9 p., 9428.

Research output: Contribution to journal › Article

Coke ovens

Computational fluid dynamics

Gases

Kinetics

Carbon Monoxide

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 journal › Article

Momentum transfer

Mass transfer

Direct numerical simulation

Particle size analysis

48 Citations (Scopus)

Large-eddy simulation of pulverized coal jet flame - Effect of oxygen concentration on NO_x formation

Muto, M., Watanabe, H., Kurose, R., Komori, S., Balusamy, S. & Hochgreb, S., Feb 15 2015, In : Fuel. 142, p. 152-163 12 p.

Research output: Contribution to journal › Article

Coal

Large eddy simulation

Oxygen

Oxidation

Gases

19 Citations (Scopus)

Modeling and simulation of coal gasification on an entrained flow coal gasifier with a recycled CO₂ injection

Watanabe, H., Tanno, K., Umetsu, H. & Umemoto, S., Feb 15 2015, In : Fuel. 142, p. 250-259 10 p.

Research output: Contribution to journal › Article

Coal

Coal gasification

Gasification

Gases

Water gas shift

11 Citations (Scopus)

Predicting the temperature and reactant concentration profiles of reacting flow in the partial oxidation of hot coke oven gas using detailed chemistry and a one-dimensional flow model

Appari, S., Tanaka, R., Li, C., Kudo, S., Hayashi, J. I., Janardhanan, V. M., Watanabe, H. & Norinaga, K., Apr 5 2015, In : Chemical Engineering Journal. 266, p. 82-90 9 p.

Research output: Contribution to journal › Article

Coke ovens

Carbon Monoxide

Gases

oxidation

Oxidation

2014

6 Citations (Scopus)

Analysis and modeling of char particle combustion with heat and multicomponent mass transfer

Umetsu, H., Watanabe, H., Kajitani, S. & Umemoto, S., Jan 1 2014, In : Combustion and Flame. 161, 8, p. 2177-2191 15 p.

Research output: Contribution to journal › Article

mass transfer

Mass transfer

heat

Boundary conditions

Maxwell equations

20 Citations (Scopus)

Applications of laser diagnostics to thermal power plants and engines

Deguchi, Y., Kamimoto, T., Wang, Z. Z., Yan, J. J., Liu, J. P., Watanabe, H. & Kurose, R., Dec 22 2014, In : Applied Thermal Engineering. 73, 2, p. 1453-1464 12 p.

Research output: Contribution to journal › Article

Laser diagnostics

Laser induced breakdown spectroscopy

Exhaust systems (engine)

Power plants

Engines

10 Citations (Scopus)

Effects of ambient pressure and precursors on soot formation in spray flames

Watanabe, H., Kurose, R., Hayashi, M., Kitano, T. & Komori, S., Jan 1 2014, In : Advanced Powder Technology. 25, 4, p. 1376-1387 12 p.

Research output: Contribution to journal › Article

Soot

Acetylene

Polycyclic Aromatic Hydrocarbons

Polycyclic aromatic hydrocarbons

Liquid fuels

45 Citations (Scopus)

Large-eddy simulation of an inclined round jet issuing into a crossflow

Sakai, E., Takahashi, T. & Watanabe, H., Jan 1 2014, In : International Journal of Heat and Mass Transfer. 69, p. 300-311 12 p.

Research output: Contribution to journal › Article

Large eddy simulation

large eddy simulation

Vortex flow

vortices

horseshoe vortices

2013

30 Citations (Scopus)

Large-eddy simulation of turbulent spray combustion in a subscale aircraft jet engine combustor-predictions of no and soot concentrations

Moriai, H., Kurose, R., Watanabe, H., Yano, Y., Akamatsu, F. & Komori, S., Aug 14 2013, In : Journal of Engineering for Gas Turbines and Power. 135, 9, 091503.

Research output: Contribution to journal › Article

Jet engines

Large eddy simulation

Soot

Combustors

Aircraft

30 Citations (Scopus)

Quantitative elemental detection of size-segregated particles using laser-induced breakdown spectroscopy

Wang, Z. Z., Deguchi, Y., Kuwahara, M., Taira, T., Zhang, X. B., Yan, J. J., Liu, J. P., Watanabe, H. & Kurose, R., Sep 1 2013, In : Spectrochimica Acta - Part B Atomic Spectroscopy. 87, p. 130-138 9 p.

Research output: Contribution to journal › Article

Coal Ash

Laser induced breakdown spectroscopy

laser-induced breakdown spectroscopy

Coal combustion

Particle size

33 Citations (Scopus)

Soot formation characteristics in a lab-scale turbulent pulverized coal flame with simultaneous planar measurements of laser induced incandescence of soot and Mie scattering of pulverized coal

Hayashi, J., Hashimoto, N., Nakatsuka, N., Tsuji, H., Watanabe, H., Makino, H. & Akamatsu, F., Jan 11 2013, In : Proceedings of the Combustion Institute. 34, 2, p. 2435-2443 9 p.

Research output: Contribution to journal › Article

incandescence

Soot

Coal

Mie scattering

soot

41 Citations (Scopus)