World's Best Scientists 2026 revealed!

D-Index & Metrics

Engineering and Technology

D-Index
54
Citations
10203
World Ranking
3230
National Ranking
43

Ryozo Ooka 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 Ryozo Ooka 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: 358 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

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

Ryozo Ooka 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 Ryozo Ooka 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: 54 D-Index — 68th percentile

68% of scientists in this discipline score the same or lower.

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

Overview

Ryozo Ooka is affiliated with the University of Tokyo in Japan and has contributed extensively to the fields of Engineering and Environmental Science through research in Environmental Engineering and related subfields. Their publications reflect a focus on building and construction, aerospace engineering, computational mechanics, and pulmonary and respiratory medicine.

Their research covers a broad array of topics, including:

  • Wind and Air Flow Studies
  • Building Energy and Comfort Optimization
  • Aerodynamics and Fluid Dynamics Research
  • Infection Control and Ventilation
  • Urban Heat Island Mitigation
  • Fluid Dynamics and Vibration Analysis
  • Fluid Dynamics and Turbulent Flows

Ryozo Ooka has published in a number of scientific venues, with frequent contributions to:

  • Building and Environment
  • Journal of Wind Engineering and Industrial Aerodynamics
  • SSRN Electronic Journal
  • Sustainable Cities and Society
  • Journal of Environmental Engineering (Transactions of AIJ)

Recent papers authored or co-authored by Ooka include:

  • Multi-scale solar radiation and photovoltaic power forecasting with machine learning algorithms in urban environment: A state-of-the-art review, 2023, Journal of Cleaner Production
  • Model predictive control of building energy systems with thermal energy storage in response to occupancy variations and time-variant electricity prices, 2020, Energy and Buildings
  • Smart design and control of thermal energy storage in low-temperature heating and high-temperature cooling systems: A comprehensive review, 2022, Renewable and Sustainable Energy Reviews
  • Comparison of different deep neural network architectures for isothermal indoor airflow prediction, 2020, Building Simulation
  • Recent research on expiratory particles in respiratory viral infection and control strategies: A review, 2021, Sustainable Cities and Society

Frequent collaborators in their research include Hideki Kikumoto, Wonseok Oh, Chao Lin, Mengtao Han, and Bingchao Zhang. These partnerships indicate ongoing work across various domains related to energy systems, environmental dynamics, and computational modeling.

Best Publications

  • Initial results from Phase 2 of the international urban energy balance model comparison

    C.S.B. Grimmond;M. Blackett;M.J. Best;J.J. Baik

  • Development of the ASHRAE Global Thermal Comfort Database II

    Veronika Földváry Ličina;Toby Cheung;Hui Zhang;Richard de Dear

  • Adaptive model of thermal comfort for offices in hot and humid climates of India

    Madhavi Indraganti;Madhavi Indraganti;Ryozo Ooka;Hom B. Rijal;Gail S. Brager

  • Development of a numerical model to predict heat exchange rates for a ground-source heat pump system

    Yujin Nam;Ryozo Ooka;Suckho Hwang

  • Comparison of various k-ε models and DSM applied to flow around a high-rise building - Report on AIJ cooperative project for CFD prediction of wind environment

    A. Mochida;Y. Tominaga;S. Murakami;R. Yoshie

  • Study on mitigation measures for outdoor thermal environment on present urban blocks in Tokyo using coupled simulation

    Hong Chen;Ryozo Ooka;Hong Huang;Takashi Tsuchiya

  • Thermal comfort in offices in India: Behavioral adaptation and the effect of age and gender

    Madhavi Indraganti;Ryozo Ooka;Hom B. Rijal

  • Predictive Control Strategies based on Weather Forecast in Buildings with Energy Storage System: A Review of the State-of-the Art

    Hélène Thieblemont;Fariborz Haghighat;Ryozo Ooka;Alain Moreau

  • Thermal comfort in offices in summer: Findings from a field study under the ‘setsuden’ conditions in Tokyo, Japan

    Madhavi Indraganti;Ryozo Ooka;Hom B. Rijal

  • CFD analysis of wind climate from human scale to urban scale

    Shuzo Murakami;Ryozo Ooka;Akashi Mochida;Shinji Yoshida

  • Progress in thermal comfort studies in classrooms over last 50 years and way forward

    Manoj Kumar Singh;Manoj Kumar Singh;Ryozo Ooka;Hom B Rijal;Sanjay Kumar

  • Numerical simulation of ground heat and water transfer for groundwater heat pump system based on real-scale experiment

    Yujin Nam;Ryozo Ooka

  • Optimal design method for building energy systems using genetic algorithms

    Ryozo Ooka;Kazuhiko Komamura

  • Urban thermal environment measurements and numerical simulation for an actual complex urban area covering a large district heating and cooling system in summer

    Hong Huang;Ryozo Ooka;Shinsuke Kato

  • Study on outdoor thermal environment of apartment block in Shenzhen, China with coupled simulation of convection, radiation and conduction

    Hong Chen;Ryozo Ooka;Kazuya Harayama;Shinsuke Kato

  • Studies on critical Reynolds number indices for wind-tunnel experiments on flow within urban areas

    Kiyoshi Uehara;Shinji Wakamatsu;Ryozo Ooka

  • Thermal comfort, skin temperature distribution, and sensible heat loss distribution in the sitting posture in various asymmetric radiant fields

    Tomonori Sakoi;Kazuyo Tsuzuki;Shinsuke Kato;Ryozo Ooka

  • CFD analysis of pollutant dispersion around buildings: Effect of cell geometry

    Mohamed M. Hefny;Ryozo Ooka

  • Study on optimum design method for pleasant outdoor thermal environment using genetic algorithms (GA) and coupled simulation of convection, radiation and conduction

    Hong Chen;Ryozo Ooka;Shinsuke Kato

  • Status of thermal comfort in naturally ventilated classrooms during the summer season in the composite climate of India

    Manoj Kumar Singh;Sanjay Kumar;Ryozo Ooka;Hom B. Rijal

Frequent Co-Authors

Shinsuke Kato
Shinsuke Kato University of Tokyo
Akashi Mochida
Akashi Mochida Tohoku University
Hom Bahadur Rijal
Hom Bahadur Rijal Tokyo City University
Bjarne W. Olesen
Bjarne W. Olesen Technical University of Denmark
Yingxin Zhu
Yingxin Zhu Tsinghua University
Yoshihide Tominaga
Yoshihide Tominaga Niigata Institute of Technology
Stefano Schiavon
Stefano Schiavon University of California, Berkeley
Fariborz Haghighat
Fariborz Haghighat Concordia University
Xiaohua Liu
Xiaohua Liu Tsinghua University
Jørn Toftum
Jørn Toftum Technical University of Denmark

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