World's Best Scientists 2026 revealed!
Akihiro Hayakawa

Akihiro Hayakawa

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 36 2469 2311 57 52 135 10227

Akihiro Hayakawa publications per year

The chart shows the history of publications by Akihiro Hayakawa between 1967 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Akihiro Hayakawa published across 59 years, from 1967 to 2025, averaging 3.2 papers a year. Output peaked at 21 publications in 2019. 20 of the 188 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1967 to 2025. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2019. 1967: 1 publication 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 1 publication 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 1 publication 1986: 0 publications 1987: 0 publications 1988: 5 publications 1989: 3 publications 1990: 0 publications 1991: 1 publication 1992: 0 publications 1993: 3 publications 1994: 0 publications 1995: 1 publication 1996: 5 publications 1997: 2 publications 1998: 3 publications 1999: 2 publications 2000: 2 publications 2001: 2 publications 2002: 1 publication 2003: 0 publications 2004: 0 publications 2005: 1 publication 2006: 0 publications 2007: 0 publications 2008: 3 publications 2009: 5 publications 2010: 5 publications 2011: 6 publications 2012: 4 publications 2013: 6 publications 2014: 5 publications 2015: 5 publications 2016: 13 publications 2017: 11 publications 2018: 9 publications 2019: 21 publications 2020: 9 publications 2021: 15 publications 2022: 10 publications 2023: 7 publications 2024: 12 publications 2025: 8 publications
1967 2025

188 publications in total across all disciplines

View publications per year as a table
Akihiro Hayakawa: publications per year, 1967 to 2025
Year Publications
1967 1
1968 0
1969 0
1970 0
1971 1
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 1
1986 0
1987 0
1988 5
1989 3
1990 0
1991 1
1992 0
1993 3
1994 0
1995 1
1996 5
1997 2
1998 3
1999 2
2000 2
2001 2
2002 1
2003 0
2004 0
2005 1
2006 0
2007 0
2008 3
2009 5
2010 5
2011 6
2012 4
2013 6
2014 5
2015 5
2016 13
2017 11
2018 9
2019 21
2020 9
2021 15
2022 10
2023 7
2024 12
2025 8
Total 188
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Akihiro Hayakawa publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Akihiro Hayakawa sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 63 bars. Horizontal axis: publications, 47–56 to 659+. Vertical axis: number of scientists, 0 to 155. Most scientists, 155, have 147–156 publications. The last bar groups every scientist with 659 publications or more. The highlighted bar, 127–136 publications, is where this scientist sits. 47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47–56 publications 659+

This scientist: 135 publications — 18th percentile

18% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

View publications distribution as a table
Number of Mechanical and Aerospace Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
Publications Scientists This scientist
47–56 10
57–66 23
67–76 32
77–86 62
87–96 67
97–106 91
107–116 113
117–126 115
127–136 130 135
137–146 140
147–156 155
157–166 132
167–176 133
177–186 130
187–196 140
197–206 115
207–216 125
217–226 117
227–236 99
237–246 92
247–256 100
257–266 95
267–276 88
277–286 77
287–296 74
297–306 74
307–316 62
317–326 70
327–336 59
337–346 58
347–356 45
357–366 44
367–376 36
377–386 41
387–396 32
397–406 23
407–416 28
417–426 27
427–436 25
437–446 23
447–456 23
457–466 20
467–476 12
477–486 24
487–496 18
497–506 12
507–516 13
517–526 21
527–536 12
537–546 8
547–556 16
557–566 3
567–576 11
577–586 6
587–596 5
597–606 6
607–616 7
617–626 7
627–636 10
637–646 4
647–656 3
657–658 2
659+ 100
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Akihiro Hayakawa D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Akihiro Hayakawa sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 64 bars. Horizontal axis: D-Index, 30 to 93+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 34 D-Index. The last bar groups every scientist with 93 D-Index or more. The highlighted bar, 36 D-Index, is where this scientist sits. 30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 36 D-Index — 28th percentile

28% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

View D-Index distribution as a table
Number of Mechanical and Aerospace Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
D-Index Scientists This scientist
30 83
31 113
32 144
33 153
34 189
35 158
36 139 36
37 127
38 130
39 126
40 104
41 100
42 107
43 101
44 103
45 79
46 88
47 70
48 83
49 44
50 64
51 56
52 50
53 48
54 58
55 52
56 48
57 42
58 34
59 42
60 37
61 42
62 44
63 22
64 33
65 29
66 23
67 29
68 24
69 19
70 34
71 26
72 19
73 18
74 19
75 14
76 19
77 8
78 18
79 16
80 12
81 17
82 11
83 16
84 7
85 9
86 8
87 6
88 6
89 7
90 10
91 4
92 4
93+ 100
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Best Publications

  • Science and technology of ammonia combustion

    Hideaki Kobayashi;Akihiro Hayakawa;K.D. Kunkuma A. Somarathne;Ekenechukwu C. Okafor

  • Experimental and numerical study of the laminar burning velocity of CH4–NH3–air premixed flames

    Ekenechukwu C. Okafor;Yuji Naito;Sophie Colson;Akinori Ichikawa

  • Laminar burning velocity and Markstein length of ammonia/air premixed flames at various pressures

    Akihiro Hayakawa;Takashi Goto;Rentaro Mimoto;Yoshiyuki Arakawa

  • Performances and emission characteristics of NH3–air and NH3CH4–air combustion gas-turbine power generations

    Osamu Kurata;Norihiko Iki;Takayuki Matsunuma;Takahiro Inoue

  • Measurement and modelling of the laminar burning velocity of methane-ammonia-air flames at high pressures using a reduced reaction mechanism

    Ekenechukwu Chijioke Okafor;Yuji Naito;Sophie Colson;Akinori Ichikawa

  • Laminar burning velocity and Markstein length of ammonia/hydrogen/air premixed flames at elevated pressures

    Akinori Ichikawa;Akihiro Hayakawa;Yuichi Kitagawa;K.D. Kunkuma Amila Somarathne

  • Towards the development of an efficient low-NOx ammonia combustor for a micro gas turbine

    Ekenechukwu C. Okafor;K.D. Kunkuma A. Somarathne;Akihiro Hayakawa;Taku Kudo

  • Control of NOx and other emissions in micro gas turbine combustors fuelled with mixtures of methane and ammonia

    Ekenechukwu C. Okafor;K.D. Kunkuma A. Somarathne;Rattanasupapornsak Ratthanan;Akihiro Hayakawa

  • Experimental investigation of stabilization and emission characteristics of ammonia/air premixed flames in a swirl combustor

    Akihiro Hayakawa;Yoshiyuki Arakawa;Rentaro Mimoto;K.D. Kunkuma A. Somarathne

  • Numerical study of a low emission gas turbine like combustor for turbulent ammonia/air premixed swirl flames with a secondary air injection at high pressure

    Kapuruge Don Kunkuma Amila Somarathne;Sotaro Hatakeyama;Akihiro Hayakawa;Hideaki Kobayashi

  • NO formation/reduction mechanisms of ammonia/air premixed flames at various equivalence ratios and pressures

    Akihiro Hayakawa;Takashi Goto;Rentaro Mimoto;Taku Kudo

  • Development of a wide range-operable, rich-lean low-NOx combustor for NH3 fuel gas-turbine power generation

    Osamu Kurata;Norihiko Iki;Takahiro Inoue;Takayuki Matsunuma

  • Measurement of the laminar burning velocity and kinetics study of the importance of the hydrogen recovery mechanism of ammonia/hydrogen/air premixed flames

    Gabriel J. Gotama;Gabriel J. Gotama;Gabriel J. Gotama;Akihiro Hayakawa;Ekenechukwu C. Okafor;Ryuhei Kanoshima

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

    Unknown

  • Emission characteristics of turbulent non-premixed ammonia/air and methane/air swirl flames through a rich-lean combustor under various wall thermal boundary conditions at high pressure

    Kapuruge Don Kunkuma Amila Somarathne;Ekenechukwu C. Okafor;Akihiro Hayakawa;Taku Kudo

  • Flame stability and emissions characteristics of liquid ammonia spray co-fired with methane in a single stage swirl combustor

    Ekenechukwu C. Okafor;Hirofumi Yamashita;Akihiro Hayakawa;K.D. Kunkuma A. Somarathne

  • Effects of hydrogen concentration on premixed laminar flames of hydrogen–methane–air

    Unknown

  • Nitrogen oxide emissions analyses in ammonia/hydrogen/air premixed swirling flames

    Unknown

  • Evolution of N2O production at lean combustion condition in NH3/H2/air premixed swirling flames

    Unknown

Frequent Co-Authors

Hideaki Kobayashi
Hideaki Kobayashi Tohoku University
Simone Hochgreb
Simone Hochgreb University of Cambridge
Takashi Goto
Takashi Goto Tohoku University
Cheng Tung Chong
Cheng Tung Chong Shanghai Jiao Tong University
Tadahiro Fujitani
Tadahiro Fujitani National Institute of Advanced Industrial Science and Technology
Agustin Valera-Medina
Agustin Valera-Medina Cardiff University

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