World's Best Scientists 2026 revealed!
Hakan F. Oztop

Hakan F. Oztop

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Mechanical and Aerospace Engineering
Turkey
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 103 51 49 1 1 543 33827

Hakan F. Oztop publications per year

The chart shows the history of publications by Hakan F. Oztop between 2001 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hakan F. Oztop published across 26 years, from 2001 to 2026, averaging 30.7 papers a year. Output peaked at 86 publications in 2021. 73 of the 799 publications appeared in the last two years.

No. of publications
20 40 60 80
Bar chart. Horizontal axis: year, 2001 to 2026. Vertical axis: number of publications, 0 to 86. Peak 86 publications in 2021. 2001: 1 publication 2002: 1 publication 2003: 1 publication 2004: 3 publications 2005: 4 publications 2006: 8 publications 2007: 15 publications 2008: 26 publications 2009: 23 publications 2010: 8 publications 2011: 14 publications 2012: 27 publications 2013: 21 publications 2014: 32 publications 2015: 22 publications 2016: 38 publications 2017: 42 publications 2018: 37 publications 2019: 50 publications 2020: 56 publications 2021: 86 publications 2022: 66 publications 2023: 80 publications 2024: 65 publications 2025: 69 publications 2026: 4 publications
2001 2026

799 publications in total across all disciplines

View publications per year as a table
Hakan F. Oztop: publications per year, 2001 to 2026
Year Publications
2001 1
2002 1
2003 1
2004 3
2005 4
2006 8
2007 15
2008 26
2009 23
2010 8
2011 14
2012 27
2013 21
2014 32
2015 22
2016 38
2017 42
2018 37
2019 50
2020 56
2021 86
2022 66
2023 80
2024 65
2025 69
2026 4
Total 799
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Hakan F. Oztop 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 Hakan F. Oztop 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, 537–546 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: 543 publications — 95th percentile

95% 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
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 8 543
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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Hakan F. Oztop 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 Hakan F. Oztop 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, 93+ 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: 103 D-Index — 99th percentile

99% 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
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+ 100 103
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Research.com Recognitions

  • 2026 - Research.com Mechanical and Aerospace Engineering in Turkey Leader Award
  • 2025 - Research.com Mechanical and Aerospace Engineering in Turkey Leader Award
  • 2022 - Research.com Mechanical and Aerospace Engineering in Turkey Leader Award

Overview

Hakan F. Oztop is affiliated with Fırat University in Turkey and has contributed extensively to the field of engineering, with a particular emphasis on mechanical engineering and energy-related research. Their scholarly work spans 948 publications in engineering, including 438 in mechanical engineering, 263 in biomedical engineering, 165 in computational mechanics, 131 in renewable energy, sustainability and the environment, and 27 in electrical and electronic engineering.

The scientist's research focuses on several specialized topics. These include:

  • Nanofluid Flow and Heat Transfer
  • Heat Transfer Mechanisms
  • Heat Transfer and Optimization
  • Solar Thermal and Photovoltaic Systems
  • Phase Change Materials Research
  • Fluid Dynamics and Turbulent Flows
  • Heat and Mass Transfer in Porous Media

Among the recent research papers authored by the scientist are:

  • "A review of melting and freezing processes of PCM/nano-PCM and their application in energy storage" (2020), published in Energy
  • "Experimental study for the application of different cooling techniques in photovoltaic (PV) panels" (2020), published in Energy Conversion and Management
  • "Natural convection and entropy production in hybrid nanofluid filled-annular elliptical cavity with internal heat generation or absorption" (2020), published in Thermal Science and Engineering Progress
  • "Insight into the investigation of diamond (C) and Silica (SiO2) nanoparticles suspended in water-based hybrid nanofluid with application in solar collector" (2022), published in Journal of Molecular Liquids
  • "A Review on the Control Parameters of Natural Convection in Different Shaped Cavities with and without Nanofluid" (2020), published in Processes

The scientist has frequently collaborated with several co-authors, most notably Fatih Selımefendıgıl, with 170 joint works, followed by Nidal H. Abu-Hamdeh (40 publications), Hakan Coşanay (24), Mikhail А. Sheremet (17), and Muhammed Gür (16).

Publication venues where the scientist's work is frequently found include:

  • International Communications in Heat and Mass Transfer (31 publications)
  • International Journal of Numerical Methods for Heat & Fluid Flow (27 publications)
  • Journal of Thermal Analysis and Calorimetry (22 publications)
  • Thermal Science and Engineering Progress (21 publications)
  • Journal of Energy Storage (15 publications)

Regarding book contributions, the scientist has published works with Springer Nature, including "Advancements in Nanotechnology for Energy and Environment" in 2022, and with Trans Tech Publications Ltd. eBooks, having contributed to the "International Conference on Functional Materials for Energy and Manufacturing (ICFMEM)" scheduled for 2024.

Best Publications

  • Numerical study of natural convection in partially heated rectangular enclosures filled with nanofluids

    Hakan F. Oztop;Eiyad Abu-Nada

  • Effects of inclination angle on natural convection in enclosures filled with Cu–water nanofluid

    Eiyad Abu-Nada;Hakan F. Oztop

  • Mixed convection in two-sided lid-driven differentially heated square cavity

    Hakan F. Oztop;Ihsan Dagtekin

  • Effect of nanofluid variable properties on natural convection in enclosures

    Eiyad Abu-Nada;Eiyad Abu-Nada;Ziyad N. Masoud;Hakan F. Öztop;Antonio Campo

  • A review of melting and freezing processes of PCM/nano-PCM and their application in energy storage

    Sara Rostami;Masoud Afrand;Amin Shahsavar;M. Sheikholeslami

  • A review on how the researchers prepare their nanofluids

    Zoubida Haddad;Zoubida Haddad;Chérifa Abid;Hakan F. Oztop;Amina Mataoui

  • Energy and exergy analysis of a latent heat storage system with phase change material for a solar collector

    Ahmet Koca;Hakan F. Oztop;Tansel Koyun;Yasin Varol

  • A review on entropy generation in natural and mixed convection heat transfer for energy systems

    Hakan F. Oztop;Hakan F. Oztop;Khaled Al-Salem

  • A review on natural convective heat transfer of nanofluids

    Zoubida Haddad;Zoubida Haddad;Hakan F. Oztop;Eiyad Abu-Nada;Amina Mataoui

  • Natural convection in nanofluids: Are the thermophoresis and Brownian motion effects significant in nanofluid heat transfer enhancement?

    Zoubida Haddad;Zoubida Haddad;Eiyad Abu-Nada;Hakan F. Oztop;Amina Mataoui

  • Numerical study of MHD mixed convection in a nanofluid filled lid driven square enclosure with a rotating cylinder

    Fatih Selimefendigil;Hakan F. Öztop

  • Natural convection heat transfer in partially open inclined square cavities

    E. Bilgen;H. Oztop

  • Corrugated conductive partition effects on MHD free convection of CNT-water nanofluid in a cavity

    Fatih Selimefendigil;Hakan F. Öztop

  • MHD mixed convection and entropy generation of nanofluid filled lid driven cavity under the influence of inclined magnetic fields imposed to its upper and lower diagonal triangular domains

    Fatih Selimefendigil;Hakan F. Öztop;Ali J. Chamkha

  • Experimental study for the application of different cooling techniques in photovoltaic (PV) panels

    Fatih Bayrak;Hakan F. Oztop;Fatih Selimefendigil

  • MHD mixed convection in a lid-driven cavity with corner heater

    Hakan F. Oztop;Hakan F. Oztop;Khaled Al-Salem;Ioan Pop

  • MHD natural convection in an inclined wavy cavity with corner heater filled with a nanofluid

    Mikhail Alexandrovich Sheremet;Mikhail Alexandrovich Sheremet;H. F. Oztop;I. Pop

  • A brief review of natural convection in enclosures under localized heating with and without nanofluids

    Hakan F. Öztop;Patrice Estellé;Wei-Mon Yan;Khaled Al-Salem

  • Conjugate natural convection in a cavity with a conductive partition and filled with different nanofluids on different sides of the partition

    Fatih Selimefendigil;Hakan F. Öztop

  • MHD natural convection and entropy generation of ferrofluid in an open trapezoidal cavity partially filled with a porous medium

    Marina S. Astanina;Mikhail A. Sheremet;Hakan F. Oztop;Nidal Abu-Hamdeh

  • Effects of different fin parameters on temperature and efficiency for cooling of photovoltaic panels under natural convection

    Fatih Bayrak;Hakan F. Oztop;Fatih Selimefendigil

Frequent Co-Authors

Fatih Selimefendigil
Fatih Selimefendigil Celal Bayar University
Yasin Varol
Yasin Varol Fırat University
Nidal Abu-Hamdeh
Nidal Abu-Hamdeh King Abdulaziz University
Khaled Al-Salem
Khaled Al-Salem King Saud University
Mikhail A. Sheremet
Mikhail A. Sheremet National Research Tomsk State University
Ioan Pop
Ioan Pop Karlsruhe Institute of Technology
Ali J. Chamkha
Ali J. Chamkha Kuwait College of Science and Technology
Lioua Kolsi
Lioua Kolsi University of Hail
Eiyad Abu-Nada
Eiyad Abu-Nada Khalifa University
Rahman Saidur
Rahman Saidur Sunway University

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