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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 44 1591 1473 115 101 287 9033

John H. Merkin publications per year

The chart shows the history of publications by John H. Merkin between 1967 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John H. Merkin published across 59 years, from 1967 to 2025, averaging 5.3 papers a year. Output peaked at 19 publications in 1996. 6 of the 313 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1967 to 2025. Vertical axis: number of publications, 0 to 19. Peak 19 publications in 1996. 1967: 1 publication 1968: 0 publications 1969: 1 publication 1970: 0 publications 1971: 0 publications 1972: 1 publication 1973: 1 publication 1974: 0 publications 1975: 1 publication 1976: 0 publications 1977: 2 publications 1978: 2 publications 1979: 2 publications 1980: 2 publications 1981: 2 publications 1982: 4 publications 1983: 5 publications 1984: 7 publications 1985: 6 publications 1986: 10 publications 1987: 9 publications 1988: 8 publications 1989: 10 publications 1990: 9 publications 1991: 8 publications 1992: 6 publications 1993: 8 publications 1994: 10 publications 1995: 15 publications 1996: 19 publications 1997: 4 publications 1998: 12 publications 1999: 4 publications 2000: 13 publications 2001: 6 publications 2002: 12 publications 2003: 8 publications 2004: 5 publications 2005: 9 publications 2006: 2 publications 2007: 5 publications 2008: 3 publications 2009: 9 publications 2010: 2 publications 2011: 4 publications 2012: 9 publications 2013: 8 publications 2014: 3 publications 2015: 5 publications 2016: 3 publications 2017: 6 publications 2018: 4 publications 2019: 5 publications 2020: 3 publications 2021: 2 publications 2022: 11 publications 2023: 1 publication 2024: 3 publications 2025: 3 publications
1967 2025

313 publications in total across all disciplines

View publications per year as a table
John H. Merkin: publications per year, 1967 to 2025
Year Publications
1967 1
1968 0
1969 1
1970 0
1971 0
1972 1
1973 1
1974 0
1975 1
1976 0
1977 2
1978 2
1979 2
1980 2
1981 2
1982 4
1983 5
1984 7
1985 6
1986 10
1987 9
1988 8
1989 10
1990 9
1991 8
1992 6
1993 8
1994 10
1995 15
1996 19
1997 4
1998 12
1999 4
2000 13
2001 6
2002 12
2003 8
2004 5
2005 9
2006 2
2007 5
2008 3
2009 9
2010 2
2011 4
2012 9
2013 8
2014 3
2015 5
2016 3
2017 6
2018 4
2019 5
2020 3
2021 2
2022 11
2023 1
2024 3
2025 3
Total 313
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John H. Merkin 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 John H. Merkin 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, 287–296 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: 287 publications — 69th percentile

69% 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 74 287
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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John H. Merkin 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 John H. Merkin 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, 44 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: 44 D-Index — 54th percentile

54% 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 44
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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Overview

John H. Merkin is affiliated with the University of Leeds in the United Kingdom. Their research primarily spans the fields of Engineering and Chemical Engineering, with a strong focus on Computational Mechanics, Biomedical Engineering, Fluid Flow and Transfer Processes, Mechanical Engineering, and Numerical Analysis.

The scientist's work covers several interconnected topics, including:

  • Nanofluid Flow and Heat Transfer
  • Fluid Dynamics and Turbulent Flows
  • Rheology and Fluid Dynamics Studies
  • Heat and Mass Transfer in Porous Media
  • Heat Transfer Mechanisms
  • Fluid Dynamics and Thin Films
  • Lattice Boltzmann Simulation Studies

Merkin's publication record includes papers in journals specializing in heat, fluid flow, and transport phenomena. Frequent publication venues include:

  • International Journal of Numerical Methods for Heat & Fluid Flow
  • Meccanica
  • Transport in Porous Media
  • International Communications in Heat and Mass Transfer
  • Journal of Engineering Mathematics

Among recent papers authored or co-authored by Merkin are:

  • "Mixed convective stagnation point flow of a hybrid nanofluid toward a vertical cylinder" (2021), published in International Journal of Numerical Methods for Heat & Fluid Flow
  • "Flow and heat transfer for MHD wall jet of hybrid nanofluids: theoretical and numerical solutions" (2023), International Journal of Numerical Methods for Heat & Fluid Flow
  • "A note on the asymptotic behaviour of axisymmetric stagnation-point flow and heat transfer of a viscous fluid past a permeable stretching/shrinking cylinder" (2022), International Communications in Heat and Mass Transfer
  • "MHD Mixed Convection Flow Over a Permeable Vertical Flat Plate Embedded in a Darcy-Forchheimer Porous Medium" (2024), Transport in Porous Media
  • "On an equation arising in the boundary-layer flow of stretching/shrinking permeable surfaces" (2020), Journal of Engineering Mathematics

Frequent co-authors collaborating with Merkin include:

  • Ioan Pop
  • Yian Yian Lok
  • Teodor Groșan
  • Natalia C. Roșca
  • Emad H. Aly

Best Publications

  • On dual solutions occurring in mixed convection in a porous medium

    J. H. Merkin

  • A simple isothermal model for homogeneous-heterogeneous reactions in boundary-layer flow. I Equal diffusivities

    M A Chaudhary;J H Merkin

  • A model for isothermal homogeneous-heterogeneous reactions in boundary-layer flow

    J. H. Merkin

  • Natural-convection boundary-layer flow on a vertical surface with Newtonian heating

    J.H. Merkin

  • Mixed convection boundary layer flow on a vertical surface in a saturated porous medium

    J. H. Merkin

  • Mixed convection from a horizontal circular cylinder

    J.H. Merkin

  • Mechanism reduction for the oscillatory oxidation of hydrogen; Sensitivity and quasi-steady-state analyses

    Alison S. Tomlin;Michael J. Pilling;Tamás Turányi;John H. Merkin

  • On roll waves down an open inclined channel

    D. J. Needham;J. H. Merkin

  • The effect of buoyancy forces on the boundary-layer flow over a semi-infinite vertical flat plate in a uniform free stream

    Unknown

  • Free Convection Boundary Layers on Cylinders of Elliptic Cross Section

    Unknown

  • A SIMPLE ISOTHERMAL MODEL FOR HOMOGENEOUS-HETEROGENEOUS REACTIONS IN BOUNDARY-LAYER FLOW. II: DIFFERENT DIFFUSIVITIES FOR REACTANT AND AUTOCATALYST

    M A Chaudhary;J H Merkin

  • Free convection boundary layers on axi-symmetric and two-dimensional bodies of arbitrary shape in a saturated porous medium

    Unknown

  • Mixed convection boundary layer similarity solutions: prescribed wall heat flux

    J. H. Merkin;T. Mahmood

  • Conjugate free convection on a vertical surface

    J.H. Merkin;I. Pop

  • Free convection with blowing and suction

    J.H Merkin

  • Propagating reaction-diffusion waves in a simple isothermal quadratic autocatalytic chemical system

    J. H. Merkin;D. J. Needham

  • The propagation of a voidage disturbance in a uniformly fluidized bed

    D. J. Needham;J. H. Merkin

  • Free convection boundary layers in a saturated porous medium with lateral mass flux

    J.H. Merkin

  • Oscillatory chemical reactions in closed vessels

    J. H. Merkin;D. J. Needham;Stephen K. Scott

  • Similarity solutions in free convection boundary-layer flows adjacent to vertical permeable surfaces in porous media: II prescribed surface heat flux

    M. A. Chaudhary;J. H. Merkin;I. Pop

  • Mixed convection boundary layer flow over a permeable vertical surface with prescribed wall heat flux

    A. Ishak;J. H. Merkin;R. Nazar;I. Pop

  • Similarity solutions in axisymmetric mixed convection boundary-layer flow

    T. Mahmood;J. H. Merkin

  • Wave-induced chemical chaos.

    John H. Merkin;Valery Petrov;Stephen K. Scott;Kenneth Showalter

Frequent Co-Authors

Ioan Pop
Ioan Pop Karlsruhe Institute of Technology
Serafim Kalliadasis
Serafim Kalliadasis Imperial College London
Derek B. Ingham
Derek B. Ingham University of Sheffield
Michael J. Pilling
Michael J. Pilling University of Leeds
Roslinda Mohd. Nazar
Roslinda Mohd. Nazar National University of Malaysia
Miloš Marek
Miloš Marek University of Chemistry and Technology
Anuar Mohd Ishak
Anuar Mohd Ishak National University of Malaysia
Alison S. Tomlin
Alison S. Tomlin University of Leeds
Norfifah Bachok
Norfifah Bachok Universiti Putra Malaysia
Teodor Grosan
Teodor Grosan Babeș-Bolyai University

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