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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 54 983 903 26 26 159 8103

Ali Akbar Ranjbar publications per year

The chart shows the history of publications by Ali Akbar Ranjbar between 2005 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ali Akbar Ranjbar published across 17 years, from 2005 to 2021, averaging 9.1 papers a year. Output peaked at 25 publications in 2017. 20 of the 154 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 2005 to 2021. Vertical axis: number of publications, 0 to 25. Peak 25 publications in 2017. 2005: 1 publication 2006: 1 publication 2007: 1 publication 2008: 3 publications 2009: 6 publications 2010: 7 publications 2011: 3 publications 2012: 13 publications 2013: 10 publications 2014: 9 publications 2015: 9 publications 2016: 18 publications 2017: 25 publications 2018: 15 publications 2019: 13 publications 2020: 4 publications 2021: 16 publications
2005 2021

154 publications in total across all disciplines

View publications per year as a table
Ali Akbar Ranjbar: publications per year, 2005 to 2021
Year Publications
2005 1
2006 1
2007 1
2008 3
2009 6
2010 7
2011 3
2012 13
2013 10
2014 9
2015 9
2016 18
2017 25
2018 15
2019 13
2020 4
2021 16
Total 154
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Ali Akbar Ranjbar publications per year - data summary

  • Ali Akbar Ranjbar, a Mechanical and Aerospace Engineering scholar from Babol Noshirvani University of Technology, has 154 publications recorded across 17 years, from 2005 to 2021.
  • The oldest publication on record dates to 2005 and the most recent to 2021.
  • The most productive year is 2017, with 25 publications.
  • The least productive years with any output are 2005, 2006 and 2007, with 1 publication each.
  • The rate of publication averages 9.1 papers per year over the whole span, or 9.1 per year counting only the 17 years with at least one publication.
  • The last 5 years on the chart (2017-2021) hold 73 publications, 47% of the career total.
  • Split into equal eras - 2005-2010: 19 publications (3.2 per year); 2011-2016: 62 publications (10.3 per year); 2017-2021: 73 publications (14.6 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Ali Akbar Ranjbar 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 Ali Akbar Ranjbar 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, 157–166 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: 159 publications — 29th percentile

29% 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
157–166 132 159
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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Ali Akbar Ranjbar publication distribution in Mechanical and Aerospace Engineering in 2026 - data summary

  • The chart plots the publication count of all 3,445 Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026, grouped into 63 ranges running from 47–56 to 659+ publications.
  • Ali Akbar Ranjbar, a Mechanical and Aerospace Engineering scholar from Babol Noshirvani University of Technology, records 159 publications - the 29th percentile of the discipline.
  • 29% of ranked Mechanical and Aerospace Engineering scientists score the same or lower than Ali Akbar Ranjbar, and about 71% score higher.
  • The median of the discipline falls in the 217–226 publications range, and Ali Akbar Ranjbar ranks below the median.
  • The most crowded range is 147–156 publications, holding 155 scientists (4% of the field).
  • 46% of the field sits in the lowest quarter of the value range (up to 197–206 publications), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 659 publications or more, 100 scientists in all (3% of the field).

Ali Akbar Ranjbar 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 Ali Akbar Ranjbar 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, 54 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: 54 D-Index — 73rd percentile

73% 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 54
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
Download as CSV

Ali Akbar Ranjbar D-index placement in Mechanical and Aerospace Engineering in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 3,445 Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026, grouped into 64 ranges running from 30 to 93+ D-Index.
  • Ali Akbar Ranjbar, a Mechanical and Aerospace Engineering scholar from Babol Noshirvani University of Technology, records 54 D-Index - the 73rd percentile of the discipline.
  • 73% of ranked Mechanical and Aerospace Engineering scientists score the same or lower than Ali Akbar Ranjbar, and about 27% score higher.
  • The median of the discipline falls in the 43 D-Index range, and Ali Akbar Ranjbar ranks above the median.
  • The most crowded range is 34 D-Index, holding 189 scientists (5% of the field).
  • 57% of the field sits in the lowest quarter of the value range (up to 45 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 93 D-Index or more, 100 scientists in all (3% of the field).

Overview

What is he best known for?

The fields of study he is best known for:

  • Thermodynamics
  • Mechanics
  • Heat transfer

His scientific interests lie mostly in Thermodynamics, Nanofluid, Mechanics, Heat transfer and Shell and tube heat exchanger. His study in Phase-change material, Natural convection and Volume is carried out as part of his studies in Thermodynamics. The concepts of his Nanofluid study are interwoven with issues in Nanofluids in solar collectors, Absorption and Fluid dynamics.

His Mechanics research includes themes of Porosity, Numerical analysis and Fin. His studies in Heat transfer integrate themes in fields like Nusselt number and Parabolic trough. His Shell and tube heat exchanger research includes elements of Plate fin heat exchanger and Shell.

His most cited work include:

  • A combined experimental and computational study on the melting behavior of a medium temperature phase change storage material inside shell and tube heat exchanger (121 citations)
  • A review on optical properties and application of nanofluids in direct absorption solar collectors (DASCs) (120 citations)
  • A numerical method for PCM-based pin fin heat sinks optimization (114 citations)

What are the main themes of his work throughout his whole career to date?

Mechanics, Heat transfer, Thermodynamics, Nanofluid and Nusselt number are his primary areas of study. Ali Akbar Ranjbar works mostly in the field of Mechanics, limiting it down to topics relating to Thermal and, in certain cases, Optics and Mass flow rate. His Heat transfer research is multidisciplinary, incorporating perspectives in Thermal conduction and Streamlines, streaklines, and pathlines.

His study in Thermodynamics focuses on Heat transfer coefficient, Phase-change material, Natural convection, Heat sink and Thermal conductivity. His study in Nanofluid is interdisciplinary in nature, drawing from both Absorption, Nanofluids in solar collectors, Volume fraction, Convective heat transfer and Fluid dynamics. His Nusselt number research integrates issues from Microchannel, Pulsating flow and Parabolic trough.

He most often published in these fields:

  • Mechanics (48.36%)
  • Heat transfer (38.52%)
  • Thermodynamics (36.89%)

What were the highlights of his more recent work (between 2019-2021)?

  • Injector (1.64%)
  • Mechanics (48.36%)
  • Nuclear engineering (5.74%)

In recent papers he was focusing on the following fields of study:

His primary scientific interests are in Injector, Mechanics, Nuclear engineering, Heat sink and Phase-change material. His Injector study is concerned with Mechanical engineering in general. Mechanics is frequently linked to Fin in his study.

Ali Akbar Ranjbar interconnects Electrolyte and Flow in the investigation of issues within Nuclear engineering. His Heat sink research incorporates elements of Thermoelectric effect, Metal foam, Heat flux, Porous medium and Composite material. His Phase-change material research is multidisciplinary, relying on both Exergy, Exergy efficiency, Thermal energy storage, Heat exchanger and Thermoelectric generator.

Between 2019 and 2021, his most popular works were:

  • Evaluation of heat sink performance using PCM and vapor chamber/heat pipe (4 citations)
  • Performance enhancement of a thermoelectric harvester with a PCM/metal foam composite (1 citations)
  • Analysis of water management in PEM fuel cell stack at dead-end mode using direct visualization (1 citations)

Best Publications

  • A combined experimental and computational study on the melting behavior of a medium temperature phase change storage material inside shell and tube heat exchanger

    M.J. Hosseini;A.A. Ranjbar;K. Sedighi;M. Rahimi

  • A review on optical properties and application of nanofluids in direct absorption solar collectors (DASCs)

    Tahereh B. Gorji;Ali Akbar Ranjbar

  • Fuzzy fractional order sliding mode controller for nonlinear systems

    H. Delavari;R. Ghaderi;A. Ranjbar;S. Momani

  • Phase change in multi-tube heat exchangers

    M. Esapour;M.J. Hosseini;A.A. Ranjbar;Y. Pahamli

  • A numerical method for PCM-based pin fin heat sinks optimization

    R. Pakrouh;M.J. Hosseini;A.A. Ranjbar;R. Bahrampoury

  • Experimental and numerical evaluation of longitudinally finned latent heat thermal storage systems

    M.J. Hosseini;A.A. Ranjbar;M. Rahimi;R. Bahrampoury

  • Poisoning of proton exchange membrane fuel cells by contaminants and impurities: Review of mechanisms, effects, and mitigation strategies

    B. Shabani;M. Hafttananian;Sh. Khamani;A. Ramiar

  • Thermal performance analysis of solar parabolic trough collector using nanofluid as working fluid: A CFD modelling study

    Seyed Ebrahim Ghasemi;Ali Akbar Ranjbar

  • Numerical thermal study on effect of porous rings on performance of solar parabolic trough collector

    Seyed Ebrahim Ghasemi;Ali Akbar Ranjbar

  • A numerical and experimental investigation on the performance of a low-flux direct absorption solar collector (DASC) using graphite, magnetite and silver nanofluids

    Tahereh B. Gorji;A.A. Ranjbar

  • Analysis of geometrical and operational parameters of PCM in a fin and tube heat exchanger

    M. Rahimi;A.A. Ranjbar;D.D. Ganji;K. Sedighi

  • Investigation of MHD Eyring–Powell fluid flow over a rotating disk under effect of homogeneous–heterogeneous reactions

    M. Gholinia;Kh. Hosseinzadeh;H. Mehrzadi;D.D. Ganji

  • Improvement of longitudinal fins configuration in latent heat storage systems

    M. Kazemi;M.J. Hosseini;A.A. Ranjbar;R. Bahrampoury

  • Analysis of the effect of eccentricity and operational parameters in PCM-filled single-pass shell and tube heat exchangers

    Younes Pahamli;Mohammad J. Hosseini;Ali A. Ranjbar;Rasool Bahrampoury

  • Thermal investigation of a PEM fuel cell with cooling flow field

    S.M. Rahgoshay;A.A. Ranjbar;A. Ramiar;E. Alizadeh

  • Solidification of nano-enhanced phase change material (NEPCM) in a wavy cavity

    S. Kashani;A. A. Ranjbar;M. Abdollahzadeh;S. Sebti

  • Effect of using nanofluids on efficiency of parabolic trough collectors in solar thermal electric power plants

    Seyed Ebrahim Ghasemi;Ali Akbar Ranjbar

  • Numerical heat transfer studies of a latent heat storage system containing nano-enhanced phase change material

    Ali Akbar Ranjbar;Sina Kashani;Seyed Farid Hosseinizadeh;Morteza Ghanbarpour

  • Thermal and exergy optimization of a nanofluid-based direct absorption solar collector

    Tahereh B. Gorji;A.A. Ranjbar

  • Improving PEM fuel cell performance and effective water removal by using a novel gas flow field

    M. Rahimi-Esbo;A.A. Ranjbar;A. Ramiar;E. Alizadeh

  • Mittag-Leffler Stability Theorem for Fractional Nonlinear Systems with Delay

    S. J. Sadati;D. Baleanu;A. Ranjbar;R. Ghaderi

Frequent Co-Authors

Mohammad Hosseini
Mohammad Hosseini Golestan University
Kurosh Sedighi
Kurosh Sedighi Babol Noshirvani University of Technology
Davood Domiri Ganji
Davood Domiri Ganji Babol Noshirvani University of Technology
Thabet Abdeljawad
Thabet Abdeljawad Prince Sultan University
Dumitru Baleanu
Dumitru Baleanu Lebanese American University
Shaher Momani
Shaher Momani University of Jordan
Bahman Shabani
Bahman Shabani RMIT University
Lasse Rosendahl
Lasse Rosendahl Aarhus University
Majid Ebrahimi Warkiani
Majid Ebrahimi Warkiani University of Technology Sydney
Kh. Hosseinzadeh
Kh. Hosseinzadeh University of Mazandaran

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