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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Engineering and Technology 43 6263 6044 54 51 178 6371

Panagiotis Grammelis publications per year

The chart shows the history of publications by Panagiotis Grammelis between 2000 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Panagiotis Grammelis published across 27 years, from 2000 to 2026, averaging 8.3 papers a year. Output peaked at 19 publications in 2023. 13 of the 223 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 2000 to 2026. Vertical axis: number of publications, 0 to 19. Peak 19 publications in 2023. 2000: 1 publication 2001: 0 publications 2002: 4 publications 2003: 5 publications 2004: 3 publications 2005: 3 publications 2006: 6 publications 2007: 10 publications 2008: 2 publications 2009: 9 publications 2010: 9 publications 2011: 5 publications 2012: 11 publications 2013: 9 publications 2014: 11 publications 2015: 13 publications 2016: 13 publications 2017: 13 publications 2018: 12 publications 2019: 7 publications 2020: 11 publications 2021: 12 publications 2022: 12 publications 2023: 19 publications 2024: 10 publications 2025: 12 publications 2026: 1 publication
2000 2026

223 publications in total across all disciplines

View publications per year as a table
Panagiotis Grammelis: publications per year, 2000 to 2026
Year Publications
2000 1
2001 0
2002 4
2003 5
2004 3
2005 3
2006 6
2007 10
2008 2
2009 9
2010 9
2011 5
2012 11
2013 9
2014 11
2015 13
2016 13
2017 13
2018 12
2019 7
2020 11
2021 12
2022 12
2023 19
2024 10
2025 12
2026 1
Total 223
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Panagiotis Grammelis publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Panagiotis Grammelis sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: publications, 38–47 to 804+. Vertical axis: number of scientists, 0 to 457. Most scientists, 457, have 148–157 publications. The last bar groups every scientist with 804 publications or more. The highlighted bar, 178–187 publications, is where this scientist sits. 38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38–47 publications 804+

This scientist: 178 publications — 39th percentile

39% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

View publications distribution as a table
Number of Engineering and Technology scientists by publication count, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
Publications Scientists This scientist
38–47 20
48–57 35
58–67 96
68–77 135
78–87 190
88–97 259
98–107 283
108–117 369
118–127 341
128–137 386
138–147 372
148–157 457
158–167 415
168–177 407
178–187 421 178
188–197 378
198–207 403
208–217 317
218–227 346
228–237 321
238–247 260
248–257 280
258–267 240
268–277 214
278–287 242
288–297 203
298–307 166
308–317 154
318–327 175
328–337 159
338–347 99
348–357 131
358–367 106
368–377 118
378–387 97
388–397 108
398–407 82
408–417 71
418–427 64
428–437 55
438–447 54
448–457 60
458–467 47
468–477 40
478–487 30
488–497 29
498–507 38
508–517 40
518–527 32
528–537 23
538–547 28
548–557 23
558–567 19
568–577 16
578–587 17
588–597 18
598–607 22
608–617 15
618–627 9
628–637 11
638–647 21
648–657 12
658–667 9
668–677 11
678–687 9
688–697 6
698–707 14
708–717 7
718–727 8
728–737 10
738–747 9
748–757 5
758–767 5
768–777 11
778–787 7
788–797 2
798–803 4
804+ 100
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Panagiotis Grammelis D-index placement in Engineering and Technology in 2026

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

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: D-Index, 30 to 107+. Vertical axis: number of scientists, 0 to 426. Most scientists, 426, have 42 D-Index. The last bar groups every scientist with 107 D-Index or more. The highlighted bar, 43 D-Index, is where this scientist sits. 30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 43 D-Index — 39th percentile

39% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

View D-Index distribution as a table
Number of Engineering and Technology scientists by D-index, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
D-Index Scientists This scientist
30 59
31 114
32 129
33 189
34 200
35 262
36 311
37 312
38 350
39 385
40 348
41 362
42 426
43 380 43
44 310
45 341
46 301
47 306
48 271
49 246
50 210
51 253
52 213
53 221
54 195
55 186
56 170
57 167
58 166
59 144
60 152
61 141
62 138
63 131
64 118
65 114
66 119
67 95
68 87
69 77
70 89
71 69
72 54
73 46
74 55
75 54
76 49
77 53
78 46
79 28
80 39
81 36
82 24
83 26
84 36
85 18
86 25
87 19
88 26
89 27
90 23
91 15
92 12
93 9
94 15
95 10
96 13
97 13
98 9
99 7
100 7
101 8
102 7
103 7
104 9
105 6
106 9
107+ 99
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Overview

Panagiotis Grammelis is affiliated with the National Technical University of Athens in Greece, specializing in the field of Engineering with a concentrated focus on subfields including Biomedical Engineering, Mechanical Engineering, Environmental Engineering, Control and Systems Engineering, and Mechanics of Materials.

Their research work covers a range of scientific topics with emphasis on thermochemical biomass conversion processes, biofuel production and bioconversion, forest biomass utilization and management, catalysts for methane reforming, biodiesel production and applications, energy and environment impacts, and microgrid control and optimization.

Grammelis has authored multiple scientific papers, including:

  • "A Review on Management of End of Life Tires (ELTs) and Alternative Uses of Textile Fibers," 2021, published in Energies
  • "Recent Advances on Alternative Aviation Fuels/Pathways: A Critical Review," 2023, published in Energies
  • "Biomass Availability in Europe as an Alternative Fuel for Full Conversion of Lignite Power Plants: A Critical Review," 2020, published in Energies
  • "Energy management and techno-economic assessment of a predictive battery storage system applying a load levelling operational strategy in island systems," 2020, published in International Journal of Energy Research
  • "Renewable Power and Heat for the Decarbonisation of Energy-Intensive Industries," 2022, published in Processes

Frequent collaborators in Grammelis' research include Konstantinos Atsonios, Emmanouil Karampinis, Nikolaos Margaritis, Dimitrios-Sotirios Kourkoumpas, and Nikolaos Nikolopoulos.

Their works have been published mainly in the journal Energies, with additional contributions to Sustainability, SSRN Electronic Journal, Renewable Energy, and Fuel.

Best Publications

  • Pyrolysis characteristics and kinetics of biomass residuals mixtures with lignite

    D. Vamvuka;E. Kakaras;E. Kastanaki;P. Grammelis

  • Pyrolysis kinetics and combustion characteristics of waste recovered fuels

    P. Grammelis;P. Basinas;A. Malliopoulou;G. Sakellaropoulos

  • Thermogravimetric studies of the behavior of lignite–biomass blends during devolatilization

    E Kastanaki;D Vamvuka;P Grammelis;E Kakaras

  • Smart energy management algorithm for load smoothing and peak shaving based on load forecasting of an island’s power system

    Spyridon Chapaloglou;Athanasios Nesiadis;Petros Iliadis;Konstantinos Atsonios

  • Particulate removal via electrostatic precipitators — CFD simulation

    George Skodras;S.P. Kaldis;D. Sofialidis;O. Faltsi

  • Pyrolysis and Combustion Characteristics of Biomass and Waste-Derived Feedstock

    George Skodras;Panagiotis Grammelis;Panagiotis Basinas;Emmanuel Kakaras

  • Numerical investigation of the oxy-fuel combustion in large scale boilers adopting the ECO-Scrub technology

    Nikos Nikolopoulos;Aristeidis Nikolopoulos;Emmanouil Karampinis;Panagiotis Grammelis

  • Report on comparison among current industrial scale lignite drying technologies (A critical review of current technologies)

    Nikolaos Nikolopoulos;Ioannis Violidakis;Emmanouil Karampinis;Michalis Agraniotis

  • Integration of calcium looping technology in existing cement plant for CO2 capture: Process modeling and technical considerations

    K. Atsonios;P. Grammelis;S.K. Antiohos;N. Nikolopoulos

  • Cultivation and characterization of Cynara Cardunculus for solid biofuels production in the Mediterranean region.

    Panagiotis Grammelis;Anastasia Malliopoulou;Panagiotis Basinas;Nicholas G Danalatos

  • High-resolution 3-D full-loop simulation of a CFB carbonator cold model

    A. Nikolopoulos;N. Nikolopoulos;A. Charitos;P. Grammelis

  • A review of key environmental and energy performance indicators for the case of renewable energy systems when integrated with storage solutions

    Dimitrios-Sotirios Kourkoumpas;Georgios Benekos;Nikolaos Nikolopoulos;Sotirios Karellas

  • Numerical investigation Greek lignite/cardoon co-firing in a tangentially fired furnace

    E. Karampinis;N. Nikolopoulos;A. Nikolopoulos;P. Grammelis

  • Calcium looping for CO2 capture from a lignite fired power plant

    Ilias Vorrias;Konstantinos Atsonios;Aristeidis Nikolopoulos;Nikos Nikolopoulos

  • An advanced EMMS scheme for the prediction of drag coefficient under a 1.2 MWth CFBC isothermal flow—Part II: Numerical implementation

    A. Nikolopoulos;K. Atsonios;N. Nikolopoulos;P. Grammelis

  • Effects of biomass co-firing with coal on ash properties. Part I: Characterisation and PSD

    P. Grammelis;G. Skodras;E. Kakaras

  • Pyrolysis and combustion behaviour of coal-MBM blends.

    G. Skodras;P. Grammelis;P. Basinas

  • A Review on Management of End of Life Tires (ELTs) and Alternative Uses of Textile Fibers

    Panagiotis Grammelis;Nikolaos Margaritis;Petros Dallas;Dimitrios Rakopoulos

  • Implementation of the Power to Methanol concept by using CO2 from lignite power plants: Techno-economic investigation

    D.S. Kourkoumpas;E. Papadimou;K. Atsonios;S. Karellas

  • Experimental and economic study of a gasification plant fuelled with olive industry wastes

    David Vera;Francisco Jurado;Nikolaos K. Margaritis;Panagiotis Grammelis

  • Advantages and Possibilities of Solid Recovered Fuel Cocombustion in the European Energy Sector

    Thomas Hilber;Jörg Maier;Günter Scheffknecht;Michalis Agraniotis

  • Emissions monitoring during coal waste wood co-combustion in an industrial steam boiler

    G. Skodras;P. Grammelis;P. Samaras;P. Vourliotis

Frequent Co-Authors

Emmanuel Kakaras
Emmanuel Kakaras National Technical University of Athens
Nikos Nikolopoulos
Nikos Nikolopoulos Centre for Research and Technology Hellas
Sotirios Karellas
Sotirios Karellas National Technical University of Athens
Dimitrios C. Rakopoulos
Dimitrios C. Rakopoulos National Technical University of Athens
Antonio Castro
Antonio Castro Spanish National Research Council
Piero Salatino
Piero Salatino University of Naples Federico II
Fabrizio Scala
Fabrizio Scala University of Naples Federico II
John R. Grace
John R. Grace University of British Columbia
Günter Scheffknecht
Günter Scheffknecht University of Stuttgart
Mercedes Ballesteros
Mercedes Ballesteros University of Technology Sydney

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