World

Top 100 Scientists

World Top 100 Scientists 2026

The Top 100 scientists are ranked based on total H-index scores at the global, regional, national, and institutional levels. Rankings cover 10 regions, 13 main fields, and 221 subfields. Subject field rankings (at world, region, country, and university levels) are currently in Beta version and updated in near real-time.
Note: Researchers classified as "others" (currently 1,122,060 profiles whose fields are undetermined or unedited) are excluded from subject and regional rankings. These rankings will dynamically evolve as the “others” profiles are reviewed and properly categorized.

Country

* Total H Index Rankings

Rankings

210,408

World Rank

2,296

Country Rank

University

Ranking Based On Selection:

Mahmood Norouzi

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Non-Newtonian Fluid Mechanics | Fluid Dynamics and Heat Transfer | Composite Material

H-Index Metrics

H-Index

34
i10 Index

86
Citation Counts

3,160

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* Total H Index Rankings

Rankings

248,775

World Rank

2,911

Country Rank

University

Ranking Based On Selection:

Mohsen Nazari

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Micro & Nanofluidics | Multiphase & Particulate Flow | Porous Media | Thermo-Flo

H-Index Metrics

H-Index

31
i10 Index

63
Citation Counts

2,977

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* Total H Index Rankings

Rankings

313,636

World Rank

4,104

Country Rank

University

Ranking Based On Selection:

Mahmood Mehregan (Chahartaghi)

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Thermodynamics | Energy | Refrigeration and Air Conditioning | CCHP | Combustion Engine

H-Index Metrics

H-Index

27
i10 Index

43
Citation Counts

1,951

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* Total H Index Rankings

Rankings

386,069

World Rank

5,739

Country Rank

University

Ranking Based On Selection:

Mohammad Hassan Kayhani

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Heat Transfer | Combustio

H-Index Metrics

H-Index

24
i10 Index

43
Citation Counts

2,107

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* Total H Index Rankings

Rankings

435,474

World Rank

6,867

Country Rank

University

Ranking Based On Selection:

Mohammad Mohsen Shahmardan

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Viscoelastic Fluid-Heat Transfer- Boger Fluid-CF

H-Index Metrics

H-Index

22
i10 Index

34
Citation Counts

1,380

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* Total H Index Rankings

Rankings

488,471

World Rank

8,037

Country Rank

University

Ranking Based On Selection:

Mohammad Jafari

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Solid Mechanics | Fracture Mechanics | Composite structure

H-Index Metrics

H-Index

20
i10 Index

33
Citation Counts

1,379

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* Total H Index Rankings

Rankings

502,947

World Rank

8,484

Country Rank

University

Ranking Based On Selection:

Ardeshir Karami Mohammadi

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
mechanical Eng. | vibration | nonlinear dynamics | contro

H-Index Metrics

H-Index

20
i10 Index

54
Citation Counts

1,603

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* Total H Index Rankings

Rankings

593,425

World Rank

10,693

Country Rank

University

Ranking Based On Selection:

Mohammad Zamen

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Thermodynamic | Heat and Mass Transfer | Solar Energy | Thermal Desalinatio

H-Index Metrics

H-Index

17
i10 Index

24
Citation Counts

1,231

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* Total H Index Rankings

Rankings

729,729

World Rank

14,103

Country Rank

University

Ranking Based On Selection:

S Mojtaba Varedi Koulaei

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Robotics | Mechanism Design | Optimizatio

H-Index Metrics

H-Index

14
i10 Index

17
Citation Counts

749

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* Total H Index Rankings

Rankings

812,783

World Rank

15,972

Country Rank

University

Ranking Based On Selection:

Esmail Mahmoodi

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Wind Energy | Wind Turbine Aerodynamics | Wind Farm Optimizatio

H-Index Metrics

H-Index

13
i10 Index

15
Citation Counts

410

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* Total H Index Rankings

Rankings

853,790

World Rank

16,624

Country Rank

University

Ranking Based On Selection:

Ali Abbas Nejad

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Renewable Energy | Solar Energy | Heat Pipes | CFD | Photovoltaic

H-Index Metrics

H-Index

12
i10 Index

12
Citation Counts

529

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* Total H Index Rankings

Rankings

899,490

World Rank

17,527

Country Rank

University

Ranking Based On Selection:

Mohammad Sheykhi

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Internal Combustion engines | Stirling engines | Energy economics | CCHP | Refrigeratio

H-Index Metrics

H-Index

11
i10 Index

12
Citation Counts

555

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* Total H Index Rankings

Rankings

927,984

World Rank

18,087

Country Rank

University

Ranking Based On Selection:

Seyed Vahid Hosseini

Shahrood University of Technology Shahrood, Iran

Engineering & Technology / Mechanical Engineering
Nano-Manufacturing and Tribology | Engine Validation | Mechanics of Material | FEM and Atomistic Simulatio