World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Engineering and Technology 56 2831 2706 863 786 276 11551
Earth Science 53 2851 2602 1175 1044 241 10752

Hari S. Viswanathan publications per year

The chart shows the history of publications by Hari S. Viswanathan between 1994 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hari S. Viswanathan published across 32 years, from 1994 to 2025, averaging 11.8 papers a year. Output peaked at 42 publications in 2024. 64 of the 377 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1994 to 2025. Vertical axis: number of publications, 0 to 42. Peak 42 publications in 2024. 1994: 1 publication 1995: 1 publication 1996: 1 publication 1997: 0 publications 1998: 1 publication 1999: 0 publications 2000: 1 publication 2001: 0 publications 2002: 0 publications 2003: 3 publications 2004: 1 publication 2005: 3 publications 2006: 4 publications 2007: 1 publication 2008: 6 publications 2009: 7 publications 2010: 4 publications 2011: 8 publications 2012: 6 publications 2013: 8 publications 2014: 15 publications 2015: 29 publications 2016: 23 publications 2017: 24 publications 2018: 24 publications 2019: 25 publications 2020: 33 publications 2021: 26 publications 2022: 29 publications 2023: 29 publications 2024: 42 publications 2025: 22 publications
1994 2025

377 publications in total across all disciplines

View publications per year as a table
Hari S. Viswanathan: publications per year, 1994 to 2025
Year Publications
1994 1
1995 1
1996 1
1997 0
1998 1
1999 0
2000 1
2001 0
2002 0
2003 3
2004 1
2005 3
2006 4
2007 1
2008 6
2009 7
2010 4
2011 8
2012 6
2013 8
2014 15
2015 29
2016 23
2017 24
2018 24
2019 25
2020 33
2021 26
2022 29
2023 29
2024 42
2025 22
Total 377
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Hari S. Viswanathan publications per year - data summary

  • Hari S. Viswanathan, a Engineering and Technology scholar from Los Alamos National Laboratory, has 377 publications recorded across 32 years, from 1994 to 2025.
  • The oldest publication on record dates to 1994 and the most recent to 2025.
  • The most productive year is 2024, with 42 publications.
  • The least productive years with any output are 1994, 1995, 1996, 1998 and others, with 1 publication each.
  • 4 of the 32 years in the span carry no publications at all (1997, 1999, 2001 and 2002).
  • The rate of publication averages 11.8 papers per year over the whole span, or 13.5 per year counting only the 28 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 148 publications, 39% of the career total.
  • Split into equal eras - 1994-2004: 9 publications (0.8 per year); 2005-2015: 91 publications (8.3 per year); 2016-2025: 277 publications (27.7 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Hari S. Viswanathan 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 Hari S. Viswanathan 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, 268–277 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: 276 publications — 71st percentile

71% 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
188–197 378
198–207 403
208–217 317
218–227 346
228–237 321
238–247 260
248–257 280
258–267 240
268–277 214 276
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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Hari S. Viswanathan publication distribution in Engineering and Technology in 2026 - data summary

  • The chart plots the publication count of all 9,796 Engineering and Technology scientists ranked by Research.com in 2026, grouped into 78 ranges running from 38–47 to 804+ publications.
  • Hari S. Viswanathan, a Engineering and Technology scholar from Los Alamos National Laboratory, records 276 publications - the 71st percentile of the discipline.
  • 71% of ranked Engineering and Technology scientists score the same or lower than Hari S. Viswanathan, and about 29% score higher.
  • The median of the discipline falls in the 198–207 publications range, and Hari S. Viswanathan ranks above the median.
  • The most crowded range is 148–157 publications, holding 457 scientists (5% of the field).
  • 61% of the field sits in the lowest quarter of the value range (up to 228–237 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 804 publications or more, 100 scientists in all (1% of the field).

Hari S. Viswanathan 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 Hari S. Viswanathan 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, 56 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: 56 D-Index — 72nd percentile

72% 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
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 56
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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Hari S. Viswanathan D-index placement in Engineering and Technology in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,796 Engineering and Technology scientists ranked by Research.com in 2026, grouped into 78 ranges running from 30 to 107+ D-Index.
  • Hari S. Viswanathan, a Engineering and Technology scholar from Los Alamos National Laboratory, records 56 D-Index - the 72nd percentile of the discipline.
  • 72% of ranked Engineering and Technology scientists score the same or lower than Hari S. Viswanathan, and about 28% score higher.
  • The median of the discipline falls in the 47 D-Index range, and Hari S. Viswanathan ranks above the median.
  • The most crowded range is 42 D-Index, holding 426 scientists (4% of the field).
  • 57% of the field sits in the lowest quarter of the value range (up to 49 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 107 D-Index or more, 99 scientists in all (1% of the field).

Research.com Recognitions

  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America

Overview

Hari S. Viswanathan is affiliated with Los Alamos National Laboratory in the United States. Their research spans multiple interconnected fields within engineering and environmental science, focusing notably on hydraulic fracturing, reservoir analysis, and geologic carbon sequestration.

The scientist's publication record includes significant contributions to a variety of journals and venues. Frequent publication outlets include arXiv (Cornell University), Scientific Reports, Geophysical Research Letters, SSRN Electronic Journal, and Energies.

Among recent papers, notable works include:

  • From Fluid Flow to Coupled Processes in Fractured Rock: Recent Advances and New Frontiers (2022, Reviews of Geophysics)
  • Reactive chemical transport simulations of geologic carbon sequestration: Methods and applications (2020, Earth-Science Reviews)
  • A framework for data-driven solution and parameter estimation of PDEs using conditional generative adversarial networks (2021, Nature Computational Science)
  • Computationally efficient multiscale neural networks applied to fluid flow in complex 3D porous media (2024, OSTI OAI)
  • Role of interaction between hydraulic and natural fractures on production (2020, Journal of Natural Gas Science and Engineering)

Their research topics cover a broad spectrum including:

  • Hydraulic Fracturing and Reservoir Analysis
  • Groundwater flow and contamination studies
  • Reservoir Engineering and Simulation Methods
  • Enhanced Oil Recovery Techniques
  • CO2 Sequestration and Geologic Interactions
  • Hydrocarbon exploration and reservoir analysis
  • Seismic Imaging and Inversion Techniques

Their main fields of study are identified as engineering and environmental science, with subfields including ocean engineering, mechanical engineering, environmental engineering, geophysics, and mechanics of materials.

Frequent collaborators contributing to their body of work include Daniel O'Malley, Jeffrey D. Hyman, Qinjun Kang, Javier E. Santos, and Mohamed Mehana. These coauthor relationships indicate sustained research partnerships in their areas of specialty.

Hari S. Viswanathan has received recognition as a Fellow of the Geological Society of America, highlighting their established presence within the geological and geophysical scientific communities.

Best Publications

  • Shale gas and non-aqueous fracturing fluids: Opportunities and challenges for supercritical CO2

    Richard S. Middleton;J. William Carey;Robert P. Currier;Jeffrey D. Hyman

  • dfnWorks: A discrete fracture network framework for modeling subsurface flow and transport

    Jeffrey D. Hyman;Satish Karra;Nataliia Makedonska;Carl W. Gable

  • An Integrated Framework for Optimizing CO2 Sequestration and Enhanced Oil Recovery

    Zhenxue Dai;Richard Middleton;Hari Viswanathan;Julianna Fessenden-Rahn

  • Nanoscale simulation of shale transport properties using the lattice Boltzmann method: permeability and diffusivity

    Li Chen;Lei Zhang;Qinjun Kang;Hari S. Viswanathan

  • The shale gas revolution: Barriers, sustainability, and emerging opportunities

    Richard S. Middleton;Rajan Gupta;Jeffrey D. Hyman;Hari S. Viswanathan

  • CO2 Accounting and Risk Analysis for CO2 Sequestration at Enhanced Oil Recovery Sites

    Zhenxue Dai;Hari Viswanathan;Richard Middleton;Feng Pan

  • Pore Scale Modeling of Reactive Transport Involved in Geologic CO2 Sequestration

    Qinjun Kang;Peter C. Lichtner;Hari S. Viswanathan;Amr I. Abdel-Fattah

  • Why Fracking Works

    Zdeněk P. Bažant;Marco Salviato;Viet T. Chau;Hari Viswanathan

  • The cross-scale science of CO2 capture and storage: from pore scale to regional scale

    Richard S. Middleton;Gordon N. Keating;Philip H. Stauffer;Amy B. Jordan

  • Development of a hybrid process and system model for the assessment of wellbore leakage at a geologic CO2 sequestration site.

    Hari S. Viswanathan;Rajesh J. Pawar;Philip H. Stauffer;John P. Kaszuba

  • Pore-scale study of dissolution-induced changes in permeability and porosity of porous media

    Qinjun Kang;Li Chen;Albert J. Valocchi;Hari S. Viswanathan

  • CO2 as a fracturing fluid: Potential for commercial-scale shale gas production and CO2 sequestration☆

    Richard Middleton;Hari Viswanathan;Robert Currier;Rajan Gupta

  • Hydraulic fracturing fluid migration in the subsurface: A review and expanded modeling results

    Daniel T. Birdsell;Harihar Rajaram;David Dempsey;David Dempsey;Hari S. Viswanathan

  • Effectiveness of supercritical-CO2 and N2 huff-and-puff methods of enhanced oil recovery in shale fracture networks using microfluidic experiments

    Phong Nguyen;J. William Carey;Hari S. Viswanathan;Mark Porter

  • Fracture-permeability behavior of shale

    J. William Carey;Zhou Lei;Esteban Rougier;Hiroko Mori

  • A system model for geologic sequestration of carbon dioxide.

    Philip H. Stauffer;Hari S. Viswanathan;Rajesh J. Pawar;George D. Guthrie

  • The Effect of Wettability Heterogeneity on Relative Permeability of Two-Phase Flow in Porous Media: A Lattice Boltzmann Study

    Jianlin Zhao;Qinjun Kang;Jun Yao;Hari Viswanathan

  • Understanding hydraulic fracturing: a multi-scale problem.

    J. D. Hyman;J. Jiménez-Martínez;H. S. Viswanathan;J. W. Carey

  • Reactive chemical transport simulations of geologic carbon sequestration: Methods and applications

    Zhenxue Dai;Lulu Xu;Ting Xiao;Brian McPherson

  • Generalized lattice Boltzmann model for flow through tight porous media with Klinkenberg's effect.

    Li Chen;Li Chen;Wenzhen Fang;Qinjun Kang;Jeffrey De'Haven Hyman

  • Greening coal: breakthroughs and challenges in carbon capture and storage.

    Philip H. Stauffer;Gordon N. Keating;Richard S. Middleton;Hari S. Viswanathan

Frequent Co-Authors

Jeffrey D. Hyman
Jeffrey D. Hyman Los Alamos National Laboratory
Qinjun Kang
Qinjun Kang Los Alamos National Laboratory
Rajesh J. Pawar
Rajesh J. Pawar United States Department of Energy
Philip H. Stauffer
Philip H. Stauffer Los Alamos National Laboratory
Zhenxue Dai
Zhenxue Dai Los Alamos National Laboratory
J. William Carey
J. William Carey Los Alamos National Laboratory
Li Chen
Li Chen Xi'an Jiaotong University
Brian McPherson
Brian McPherson University of Utah
Harihar Rajaram
Harihar Rajaram Johns Hopkins University
Scott L. Painter
Scott L. Painter Oak Ridge National Laboratory

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