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Mechanical and Aerospace Engineering
Pakistan
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 53 51 1 1 337 30123

Rahmat Ellahi publications per year

The chart shows the history of publications by Rahmat Ellahi between 2003 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Rahmat Ellahi published across 24 years, from 2003 to 2026, averaging 14.9 papers a year. Output peaked at 34 publications in 2014. 21 of the 357 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 2003 to 2026. Vertical axis: number of publications, 0 to 34. Peak 34 publications in 2014. 2003: 1 publication 2004: 2 publications 2005: 0 publications 2006: 1 publication 2007: 5 publications 2008: 5 publications 2009: 8 publications 2010: 10 publications 2011: 6 publications 2012: 7 publications 2013: 11 publications 2014: 34 publications 2015: 23 publications 2016: 30 publications 2017: 33 publications 2018: 30 publications 2019: 25 publications 2020: 28 publications 2021: 32 publications 2022: 16 publications 2023: 13 publications 2024: 16 publications 2025: 18 publications 2026: 3 publications
2003 2026

357 publications in total across all disciplines

View publications per year as a table
Rahmat Ellahi: publications per year, 2003 to 2026
Year Publications
2003 1
2004 2
2005 0
2006 1
2007 5
2008 5
2009 8
2010 10
2011 6
2012 7
2013 11
2014 34
2015 23
2016 30
2017 33
2018 30
2019 25
2020 28
2021 32
2022 16
2023 13
2024 16
2025 18
2026 3
Total 357
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Rahmat Ellahi 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 Rahmat Ellahi 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, 337–346 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: 337 publications — 79th percentile

79% 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 58 337
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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Rahmat Ellahi 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 Rahmat Ellahi 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 Pakistan Leader Award
  • 2025 - Research.com Mechanical and Aerospace Engineering in Pakistan Leader Award
  • 2022 - Research.com Mechanical and Aerospace Engineering in Pakistan Leader Award

Overview

Rahmat Ellahi is affiliated with the International Islamic University, Islamabad in Pakistan. Their research primarily focuses on the field of Engineering, with a particular concentration on Biomedical Engineering, Computational Mechanics, and Mechanical Engineering within the broader discipline.

The scientist's contributions span several key subfields including Biomedical Engineering, Computational Mechanics, Mechanical Engineering, Modeling and Simulation, and Mechanics of Materials. Their main topics of research include:

  • Nanofluid Flow and Heat Transfer
  • Heat Transfer Mechanisms
  • Fluid Dynamics and Turbulent Flows
  • Heat Transfer and Optimization
  • Lattice Boltzmann Simulation Studies
  • Heat and Mass Transfer in Porous Media
  • Fractional Differential Equations Solutions

Rahmat Ellahi has published extensively in frequent venues such as:

  • International Journal of Numerical Methods for Heat & Fluid Flow
  • Journal of Thermal Analysis and Calorimetry
  • Symmetry
  • Mathematics
  • Coatings

Their collaboration network includes several frequent co-authors, notably:

  • Sadiq M. Sait
  • M. M. Bhatti
  • A. Zeeshan
  • Ambreen Afsar Khan
  • Taseer Muhammad

Some recently published papers by Rahmat Ellahi include:

  • Swimming of Gyrotactic Microorganism in MHD Williamson nanofluid flow between rotating circular plates embedded in porous medium: Application of thermal energy storage, 2021, Journal of Energy Storage
  • Significance of nonlinear thermal radiation in 3D Eyring-Powell nanofluid flow with Arrhenius activation energy, 2020, Journal of Thermal Analysis and Calorimetry
  • Swimming of Motile Gyrotactic Microorganisms and Nanoparticles in Blood Flow Through Anisotropically Tapered Arteries, 2020, Frontiers in Physics
  • Bioconvection flow of magnetized Carreau nanofluid under the influence of slip over a wedge with motile microorganisms, 2020, Journal of Thermal Analysis and Calorimetry
  • Insight into the investigation of diamond (C) and Silica (SiO2) nanoparticles suspended in water-based hybrid nanofluid with application in solar collector, 2022, Journal of Molecular Liquids

Best Publications

  • Effect of thermal radiation on magnetohydrodynamics nanofluid flow and heat transfer by means of two phase model

    Mohsen Sheikholeslami;Davood Domiri Ganji;M. Younus Javed;R. Ellahi;R. Ellahi

  • The effects of MHD and temperature dependent viscosity on the flow of non-Newtonian nanofluid in a pipe: Analytical solutions

    R. Ellahi;R. Ellahi

  • Three dimensional mesoscopic simulation of magnetic field effect on natural convection of nanofluid

    M. Sheikholeslami;R. Ellahi;R. Ellahi

  • Simulation of MHD CuO–water nanofluid flow and convective heat transfer considering Lorentz forces

    Mohsen Sheikholeslami;Mofid Gorji Bandpy;R. Ellahi;R. Ellahi;A. Zeeshan

  • Shape effects of nanosize particles in Cu-H2O nanofluid on entropy generation

    R. Ellahi;R. Ellahi;M. Hassan;A. Zeeshan

  • Effect of magnetic dipole on viscous ferro-fluid past a stretching surface with thermal radiation

    A. Zeeshan;A. Majeed;R. Ellahi;R. Ellahi

  • Volume of fluid model to simulate the nanofluid flow and entropy generation in a single slope solar still

    Saman Rashidi;Shima Akar;Masoud Bovand;Rahmat Ellahi

  • Effects of MHD on Cu–water nanofluid flow and heat transfer by means of CVFEM

    M. Sheikholeslami;M. Gorji Bandpy;R. Ellahi;R. Ellahi;Mohsan Hassan

  • Effects of Heat Transfer in Flow of Nanofluids Over a Permeable Stretching Wall in a Porous Medium

    M. Sheikholeslami;R. Ellahi;H. R. Ashorynejad;G. Domairry

  • Series solutions of non-Newtonian nanofluids with Reynolds' model and Vogel's model by means of the homotopy analysis method

    Rahmat Ellahi;Mohsin Raza;Kambiz Vafai

  • Effects of mass transfer on MHD second grade fluid towards stretching cylinder: A novel perspective of Cattaneo–Christov heat flux model

    Sultan Z. Alamri;Ambreen A. Khan;Mariam Azeez;R. Ellahi;R. Ellahi

  • Numerical investigation of heat exchanger effectiveness in a double pipe heat exchanger filled with nanofluid: A sensitivity analysis by response surface methodology

    Kamel Milani Shirvan;Mojtaba Mamourian;Soroush Mirzakhanlari;Rahmat Ellahi

  • Enhancement of heat transfer and heat exchanger effectiveness in a double pipe heat exchanger filled with porous media: Numerical simulation and sensitivity analysis of turbulent fluid flow

    Kamel Milani Shirvan;Rahmat Ellahi;Rahmat Ellahi;Soroush Mirzakhanlari;Mojtaba Mamourian

  • Effects of MHD and slip on heat transfer boundary layer flow over a moving plate based on specific entropy generation

    R. Ellahi;Sultan Z Alamri;Abdul Basit;A. Majeed

  • Influences of wavy wall and nanoparticles on entropy generation over heat exchanger plat

    J.A. Esfahani;M. Akbarzadeh;S. Rashidi;M.A. Rosen

  • Convective radiative plane Poiseuille flow of nanofluid through porous medium with slip: An application of Stefan blowing

    Sultan Z. Alamri;R. Ellahi;R. Ellahi;N. Shehzad;A. Zeeshan

  • Study of Natural Convection MHD Nanofluid by Means of Single and Multi-Walled Carbon Nanotubes Suspended in a Salt-Water Solution

    Rahmat Ellahi;Mohsin Hassan;Ahmad Zeeshan

  • Simultaneous effects of coagulation and variable magnetic field on peristaltically induced motion of Jeffrey nanofluid containing gyrotactic microorganism.

    M.M. Bhatti;A. Zeeshan;R. Ellahi

  • On boundary layer nano-ferroliquid flow under the influence of low oscillating stretchable rotating disk

    R. Ellahi;R. Ellahi;M.H. Tariq;M. Hassan;K. Vafai

  • Convective heat transfer flow of nanofluid in a porous medium over wavy surface

    M. Hassan;M. Marin;Abdullah Alsharif;R. Ellahi

  • A study of natural convection heat transfer in a nanofluid filled enclosure with elliptic inner cylinder

    M. Sheikholeslami;R. Ellahi;Mohsan Hassan;Soheil Soleimani

Frequent Co-Authors

Tasawar Hayat
Tasawar Hayat Quaid-i-Azam University
Ahmed Zeeshan
Ahmed Zeeshan International Islamic University, Islamabad
Sohail Nadeem
Sohail Nadeem Quaid-i-Azam University
M.M. Bhatti
M.M. Bhatti Shandong University of Science and Technology
Noreen Sher Akbar
Noreen Sher Akbar National University of Sciences and Technology
Kambiz Vafai
Kambiz Vafai University of California, Riverside
Sadiq M. Sait
Sadiq M. Sait King Fahd University of Petroleum and Minerals
Mohsen Sheikholeslami
Mohsen Sheikholeslami Babol Noshirvani University of Technology
Taseer Muhammad
Taseer Muhammad King Khalid University
Saleem Asghar
Saleem Asghar COMSATS University Islamabad

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