• 1499 Citations
  • 21 h-Index
19952019
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Research Output 1995 2019

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Conference contribution
2017

High-speed visualization of fuel spray impingement in the near-wall region using a DISI injector

Kawahara, N., Kintaka, K. & Tomita, E., 2017, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics. SPIE, Vol. 10328. 1032817

Research output: Chapter in Book/Report/Conference proceedingConference contribution

fuel sprays
Injector
impingement
Spray
splashing

Multidimensional CFD simulation of diesel spray combustion using chemical kinetics

Kawahara, N., Takeda, N. & Tomita, E., 2017, COMODIA 2017 - 9th International Conference on Modeling and Diagnostics for Advanved Engine Systems. Japan Society of Mechanical Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Reaction kinetics
Computational fluid dynamics
Drop breakup
Velocimeters
Ignition
2015
1 Citation (Scopus)

Experimental study on combustion characteristics of wet ethanol ignited by Laser-induced breakdown

Rahman, K. M., Kawahara, N., Tsuboi, K. & Tomita, E., Apr 20 2015, Laser Ignition Conference, LIC 2015. OSA - The Optical Society

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ethanol
ethyl alcohol
breakdown
ignition
Ignition
2013

In-cylinder observations of chemiluminescence in turbulent premixed flames using a spark plug sensor with an optical fiber

Kawahara, N., Inoue, A. & Tomita, E., 2013, SAE Technical Papers. Vol. 11.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spark plugs
Chemiluminescence
Engine cylinders
Optical fibers
Internal combustion engines
2 Citations (Scopus)

Mixing process of direct injection hydrogen jet in a constant volume vessel by using spark-induced breakdown spectroscopy

Bin Abdul Rahman, M. T., Kawahara, N. & Tomita, E., 2013, SAE Technical Papers. Vol. 11.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Direct injection
Electric sparks
Spectroscopy
Hydrogen
Spark plugs
2012

Spectrum analysis of chemiluminescence of a low sooting PCCI diesel engine operating with moderately early injection timing

Kiplimo, R., Tomita, E., Kawahara, N. & Yokobe, S., 2012, Proceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012. p. 410-415 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spectrum Analysis
Diesel Engine
Chemiluminescence
Combustion
Spectrum analysis
2008
1 Citation (Scopus)

Effect of nozzle geometry on atomization of transient spray from port fuel injector

Esmail, M., Kawahara, N., Tomita, E. & Sumida, M., 2008, Proceedings of the 7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008. p. 429-436 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Atomization
Injector
Spray
Nozzle
Nozzles

Spray behavior near the nozzle of a DISI Multi-hole injector using phase doppler anemometer

Ahmed, F., Kawahara, N., Tomita, E. & Sumida, M., 2008, Proceedings of the 7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008. p. 445-452 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Injector
Anemometers
Personal digital assistants
Direct injection
Spray
2007

In situ measurement of water temperature with a sensor using interferometry

Tomita, E., Kawahara, N. & Toda, Y., 2007, 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007. Vol. 3. p. 727-733 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

water temperature
in situ measurement
Interferometry
interferometry
sensors
2006

An aerosol nozzle that improves the spray agglomerative characteristics for optimal insecticide delivery to the target

Ikeda, Y., Kim, S. M., Horibe, Y., Takaki, S. & Kawahara, N., 2006, 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Insecticides
Aerosols
Nozzles
Propellants
Agglomeration
10 Citations (Scopus)

Local equivalence ratio measurement of CH4/air and C 3H8/air laminar flames by laser-induced breakdown spectroscopy

Ikeda, Y., Nishiyama, A., Kawahara, N., Tomita, E. & Nakayama, T., 2006, Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. Vol. 16. p. 11586-11598 13 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Laser induced breakdown spectroscopy
laser-induced breakdown spectroscopy
equivalence
laser
spectroscopy
2 Citations (Scopus)

PDA measurement of transient spray formed by a disi multi-hole injector

Kawahara, N., Tomita, E., Nakasuji, H. & Sumida, M., 2006, 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Personal digital assistants
Volume measurement
Vortex flow
Lasers
Anemometers
4 Citations (Scopus)

Spatial and temporal characteristics of laser-induced air plasma

Kawahara, N., Tomita, E., Nakayama, T., Ikeda, Y. & Nishiyama, A., 2006, Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. Vol. 23. p. 17586-17595 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

breakdown
laser
Cassegrain optics
Plasmas
plasma
2004
5 Citations (Scopus)

Fuel breakup near nozzle exit of high-pressure swirl injector for gasoline direct injection engine

Kawahara, N., Tomita, E., Kasahara, D., Nakayama, T. & Sumida, M., Jan 1 2004, 2004 SAE World Congress. SAE International

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Direct injection
Gasoline
Nozzles
Engines
Liquids
9 Citations (Scopus)

In-situ fuel concentration measurement near spark plug by 3.392 μm infrared absorption method-application to a port injected lean-burn engine

Nishiyama, A., Kawahara, N., Tomita, E., Fujiwara, M., Ishikawa, N., Kamei, K. & Nagashima, K., Jan 1 2004, 2004 SAE World Congress. SAE International

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spark plugs
Infrared absorption
Engines
Fuel injection
Intake systems
2002

Fiber-optic heterodyne interferometry temperature measurement of unburned gas in a HCCI engine fueled with DME

Kawahara, N., Tomita, E. & Ichimiya, M., 2002, International Symposium on Combustion Abstracts of Works-in-Progress Posters. p. 170 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Interferometry
Temperature measurement
Fiber optics
Ignition
Engines

Flame propagation and combustion characteristics of stratified charge propane-air mixture with swirling flow in a constant-volume vessel

Nishiyama, A., Tomita, E., Kawahara, N., Yoshiyama, S. & Hamamoto, Y., 2002, International Symposium on Combustion Abstracts of Works-in-Progress Posters. p. 207 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Swirling flow
Propane
Air
Turbulence
Laser Doppler velocimeters

In-situ fuel concentration measurement near spark plug by 3.39 MM infrared absorption method (development of a double-pass optical sensor)

Nishiyama, A., Kawahara, N. & Tomita, E., 2002, International Symposium on Combustion Abstracts of Works-in-Progress Posters. p. 169 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spark plugs
Optical sensors
Infrared absorption
Sapphire
Light sources
1 Citation (Scopus)

In-situ fuel concentration measurement near spark plug in spark-ignition engines by 3.39 μM infrared laser absorption method

Tomita, E., Kawahara, N., Yoshiyama, S., Kakuho, A., Itoh, T. & Hamamoto, Y., 2002, International Symposium on Combustion Abstracts of Accepted Papers. p. 10 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spark plugs
Infrared lasers
Internal combustion engines
Optical sensors
Electric sparks
1999
2 Citations (Scopus)

Measurements of the combustion characteristics of compound clusters in pressure-atomized spray flame

Kawahara, N., Ikeda, Y. & Nakajima, T., 1999, 37th Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA 99-0210

Research output: Chapter in Book/Report/Conference proceedingConference contribution

spray
droplet
sprayers
chemiluminescence
flames
1997
2 Citations (Scopus)

Droplet dispersion and turbulent structure in a pressure-atomized spray flame

Kawahara, N., Ikeda, Y. & Nakajima, T., 1997, 35th Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA Paper 97-0125

Research output: Chapter in Book/Report/Conference proceedingConference contribution

spray
droplet
sprayers
flames
turbulent mixing