World's Best Scientists 2026 revealed!
Ramalingam Velraj

Ramalingam Velraj

D-Index & Metrics

Engineering and Technology

D-Index
64
Citations
14659
World Ranking
1656
National Ranking
31

Ramalingam Velraj 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 Ramalingam Velraj sits on this spectrum.

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 publications 804+

This scientist: 206 publications — 50th percentile

50% of scientists in this discipline score the same or lower.

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

Ramalingam Velraj 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 Ramalingam Velraj sits on this spectrum.

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: 64 D-Index — 84th percentile

84% of scientists in this discipline score the same or lower.

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

Overview

Ramalingam Velraj is affiliated with Anna University, Chennai in India. Their research spans multiple disciplines within engineering and energy, focusing primarily on mechanical engineering and renewable energy applications.

Their recent publications cover a range of topics related to thermal management, energy storage, and renewable energy systems. Notable papers include:

  • A state-of-the art review on advancing battery thermal management systems for fast-charging, 2023, Applied Thermal Engineering
  • Effective PCM, insulation, natural and/or night ventilation techniques to enhance the thermal performance of buildings located in various climates - A review, 2022, Energy and Buildings
  • Performance augmentation of solar photovoltaic panel through PCM integrated natural water circulation cooling technique, 2020, Renewable Energy
  • Sea-water desalination using a desalting unit integrated with a parabolic trough collector and activated carbon pellets as energy storage medium, 2021, Desalination
  • Review on numerical algorithms for melting and solidification studies and their implementation in general purpose computational fluid dynamic software, 2021, Journal of Energy Storage

Velraj collaborates frequently with several researchers including Pandiyarajan Vellaichamy, P. Ganesh Kumar, Amrit Kumar Thakur, Ravishankar Sathyamurthy, and G. Kumaresan. These coauthorships underline a consistent partnership in advancing research within their fields.

The scientist's work is often published in established specialized journals. Frequent publication venues include:

  • Journal of Energy Storage
  • Desalination
  • Thermal Science
  • Renewable Energy
  • Sustainable Cities and Society

Ramalingam Velraj's main fields of study include:

  • Engineering
  • Energy

Within these fields, the key subfields of study covered by Velraj's research are:

  • Mechanical Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Biomedical Engineering
  • Building and Construction

The scientist's research covers a broad spectrum of topics that are critical to sustainable energy and environmental engineering. Main topics of work include:

  • Solar Thermal and Photovoltaic Systems
  • Phase Change Materials Research
  • Solar-Powered Water Purification Methods
  • Adsorption and Cooling Systems
  • Building Energy and Comfort Optimization
  • Membrane Separation Technologies
  • Nanofluid Flow and Heat Transfer

Best Publications

  • Heat transfer enhancement in a latent heat storage system

    R. Velraj;R.V. Seeniraj;B. Hafner;C. Faber

  • Phase change material-based building architecture for thermal management in residential and commercial establishments

    A. Pasupathy;R. Velraj;R.V. Seeniraj

  • Experimental investigation on a combined sensible and latent heat storage system integrated with constant/varying (solar) heat sources

    N. Nallusamy;S. Sampath;R. Velraj

  • Performance and exhaust emission characteristics of a CI engine fueled with Pongamia pinnata methyl ester (PPME) and its blends with diesel

    K. Sureshkumar;R. Velraj;R. Ganesan

  • Experimental investigation on heat recovery from diesel engine exhaust using finned shell and tube heat exchanger and thermal storage system

    V. Pandiyarajan;M. Chinna Pandian;E. Malan;R. Velraj

  • Influence of alumina nanoparticles, ethanol and isopropanol blend as additive with diesel–soybean biodiesel blend fuel: Combustion, engine performance and emissions

    T. Shaafi;R. Velraj

  • Effect of double layer phase change material in building roof for year round thermal management

    A. Pasupathy;R. Velraj

  • A review on compressed air energy storage – A pathway for smart grid and polygeneration

    Gayathri Venkataramani;Prasanna Parankusam;Velraj Ramalingam;Jihong Wang

  • Thermal management of electronics: A review of literature

    Sundaram Shanmuga Anandan;Velraj Ramalingam

  • Experimental investigation and numerical simulation analysis on the thermal performance of a building roof incorporating phase change material (PCM) for thermal management

    A. Pasupathy;L. Athanasius;R. Velraj;R.V. Seeniraj

  • Experimental analysis and numerical modelling of inward solidification on a finned vertical tube for a latent heat storage unit

    R. Velraj;R.V. Seeniraj;B. Hafner;C. Faber

  • Review of solar cooling methods and thermal storage options

    L.A. Chidambaram;A.S. Ramana;G. Kamaraj;R. Velraj

  • Solar cookers with and without thermal storage—A review

    R.M. Muthusivagami;R. Velraj;R. Sethumadhavan

  • Review on free cooling of buildings using phase change materials

    V. Antony Aroul Raj;R. Velraj

  • Mitigation of NOx emissions from a jatropha biodiesel fuelled DI diesel engine using antioxidant additives

    K. Varatharajan;M. Cheralathan;R. Velraj

  • Effect of dispersion of various nanoadditives on the performance and emission characteristics of a CI engine fuelled with diesel, biodiesel and blends—A review

    T. Shaafi;K. Sairam;A. Gopinath;G. Kumaresan

  • Experimental investigation of the thermo-physical properties of water–ethylene glycol mixture based CNT nanofluids

    V. Kumaresan;R. Velraj

  • Optimization of biodiesel production from Manilkara zapota (L.) seed oil using Taguchi method

    R. Sathish Kumar;K. Sureshkumar;R. Velraj

  • Augmenting the productivity of solar still using multiple PCMs as heat energy storage

    Unknown

  • Experimental investigation on phase change material based thermal storage system for solar air heating applications

    S. Esakkimuthu;Abdel Hakim Hassabou;C. Palaniappan;Markus Spinnler

  • The effect of carbon nanotubes in enhancing the thermal transport properties of PCM during solidification

    Vellaisamy Kumaresan;Ramalingam Velraj;Sarit K. Das

Frequent Co-Authors

Ravishankar Sathyamurthy
Ravishankar Sathyamurthy King Fahd University of Petroleum and Minerals
Amimul Ahsan
Amimul Ahsan Universiti Putra Malaysia
S. Iniyan
S. Iniyan Anna University, Chennai
Yulong Ding
Yulong Ding University of Birmingham
Omid Mahian
Omid Mahian Ningbo University

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