Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,864 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection :1
James A Miller
combustion
combustion chemistry
chemical kinetics
chemical vapor deposition
Metrics
H-Index
i10 Index
Citation
111
376
58,236
* Rankings
Ranking Based On Selection :2
Branko Ruscic
thermochemistry
photoionization
enthalpies of formation
partition functions
quantum chemistry
Metrics
H-Index
i10 Index
Citation
64
146
17,559
Alan Kastengren
fluid mechanics
x-ray diagnostics
multiphase flows
combustion
Metrics
H-Index
i10 Index
Citation
34
114
4,269
Yan Feng
Aerosol
aerosol-cloud interaction
radiation
climate modeling
Metrics
H-Index
i10 Index
Citation
33
50
6,327
Elia Merzari
Computational Fluid Dynamics
Thermal-hydraulics
Advanced Nuclear Reactors
Multiphysics
Fluid Structure Interaction
Metrics
H-Index
i10 Index
Citation
31
91
3,694
Pallab Barai
Mechanical analysis of Electrochemical Systems
Transport Phenomena
Modeling Synthesis Processes: Coprecipitation and Sintering
Metrics
H-Index
i10 Index
Citation
27
40
2,458
Robert Erck
tribology
friction
wear wind turbines
thin film
high vacuum
Metrics
H-Index
i10 Index
Citation
27
59
2,748
Nicholaos Demas
Tribology
Materials
Piston-cylinder Testing
Nano-indentation
Instrumentation
Metrics
H-Index
i10 Index
Citation
22
29
1,179
Aditya V Ayyagari
Tribology
Materials Science
Corrosion
Wear
Metallic Glass
Metrics
H-Index
i10 Index
Citation
21
30
1,290
Aleksandr Obabko
Computational Fluid Dynamics (CFD)
Applied Math and Physics
Magneto-hydrodynamics (MHD)
Thermal hydraulics
Metrics
H-Index
i10 Index
Citation
21
37
1,404
Kiran Sasikumar
Heat transfer
Nanotechnology
Molecular dynamics
FEM
Machine learning
Metrics
H-Index
i10 Index
Citation
18
24
1,090
Muhsin Ameen
Combustion Modeling
Large Eddy Simulation
Cyclic Variability
Internal Combustion Engines
Direct Numerical Simulation
Metrics
H-Index
i10 Index
Citation
17
23
987
Ji-Woong Park
Combustion
Chemical kinetics
Internal Combustion Engine
Model Reduction
Fire Safety
Metrics
H-Index
i10 Index
Citation
13
16
660
Steven Lottes
Computational Fluid Dynamics
multi-phase flows
reacting flows
hydraulics
Metrics
H-Index
i10 Index
Citation
11
14
555
Joohan Kim
Internal Combustion Engine
Ignition
Combustion
Soot
CFD Simulation
Metrics
H-Index
i10 Index
Citation
9
8
227
Tarak Nath Nandi
Computational Fluid Dynamics
Materials Science
Genomics
Cancer
Machine Learning
Metrics
H-Index
i10 Index
Citation
9
7
185
Ya Gao
Internal Combustion Engine
Fuel spray
Synchrotron X-ray imaging
Metrics
H-Index
i10 Index
Citation
8
8
429
Essam M Elhannouny
Combustion
Fuel and Emission
Internal Combustion Engine
Fuel Injection Systems and Sprays
Metrics
H-Index
i10 Index
Citation
7
5
448
Saurabh Chawdhary
Computational fluid dynamics
geological flows
renewable energy
biofluids
high performance computing
Metrics
H-Index
i10 Index
Citation
6
5
210
Lander Ibarra
Multiphase Flow
Heat Transfer
CFD
Numerical Methods
Uncertainty Quantification
Metrics
H-Index
i10 Index
Citation
6
0
73
Severin Kamguia Simeu
Automobile
Hybrid Powertrain
Power Electronic
System Modeling
Testings
Metrics
H-Index
i10 Index
Citation
2
1
29
Rankings
Ranking Based On Selection: 1
James A Miller
Metrics
H-Index
i10 Index
Citation Counts
111
376
58,236
combustion
combustion chemistry
chemical kinetics
chemical vapor deposition
Rankings
Ranking Based On Selection: 2
Branko Ruscic
Metrics
H-Index
i10 Index
Citation Counts
64
146
17,559
thermochemistry
photoionization
enthalpies of formation
partition functions
quantum chemistry
Rankings
Ranking Based On Selection: 3
Alan Kastengren
Metrics
H-Index
i10 Index
Citation Counts
34
114
4,269
fluid mechanics
x-ray diagnostics
multiphase flows
combustion
Rankings
Ranking Based On Selection: 4
Yan Feng
Metrics
H-Index
i10 Index
Citation Counts
33
50
6,327
Aerosol
aerosol-cloud interaction
radiation
climate modeling
Rankings
Ranking Based On Selection: 5
Elia Merzari
Metrics
H-Index
i10 Index
Citation Counts
31
91
3,694
Computational Fluid Dynamics
Thermal-hydraulics
Advanced Nuclear Reactors
Multiphysics
Fluid Structure Interaction
Rankings
Ranking Based On Selection: 6
Pallab Barai
Metrics
H-Index
i10 Index
Citation Counts
27
40
2,458
Mechanical analysis of Electrochemical Systems
Transport Phenomena
Modeling Synthesis Processes: Coprecipitation and Sintering
Rankings
Ranking Based On Selection: 7
Robert Erck
Metrics
H-Index
i10 Index
Citation Counts
27
59
2,748
tribology
friction
wear wind turbines
thin film
high vacuum
Rankings
Ranking Based On Selection: 8
Aaron Greco
Metrics
H-Index
i10 Index
Citation Counts
24
31
2,051
Rankings
Ranking Based On Selection: 9
Nicholaos Demas
Metrics
H-Index
i10 Index
Citation Counts
22
29
1,179
Tribology
Materials
Piston-cylinder Testing
Nano-indentation
Instrumentation
Rankings
Ranking Based On Selection: 10
Aditya V Ayyagari
Metrics
H-Index
i10 Index
Citation Counts
21
30
1,290
Tribology
Materials Science
Corrosion
Wear
Metallic Glass
Rankings
Ranking Based On Selection: 11
Aleksandr Obabko
Metrics
H-Index
i10 Index
Citation Counts
21
37
1,404
Computational Fluid Dynamics (CFD)
Applied Math and Physics
Magneto-hydrodynamics (MHD)
Thermal hydraulics
Rankings
Ranking Based On Selection: 12
Kiran Sasikumar
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,090
Heat transfer
Nanotechnology
Molecular dynamics
FEM
Machine learning
Rankings
Ranking Based On Selection: 13
Muhsin Ameen
Metrics
H-Index
i10 Index
Citation Counts
17
23
987
Combustion Modeling
Large Eddy Simulation
Cyclic Variability
Internal Combustion Engines
Direct Numerical Simulation
Rankings
Ranking Based On Selection: 14
Sreenath Gupta
Metrics
H-Index
i10 Index
Citation Counts
16
21
1,074
Rankings
Ranking Based On Selection: 15
Patric Den Hartog
Metrics
H-Index
i10 Index
Citation Counts
14
18
1,822
Rankings
Ranking Based On Selection: 16
Ji-Woong Park
Metrics
H-Index
i10 Index
Citation Counts
13
16
660
Combustion
Chemical kinetics
Internal Combustion Engine
Model Reduction
Fire Safety
Rankings
Ranking Based On Selection: 17
Travis Sikes
Metrics
H-Index
i10 Index
Citation Counts
11
13
1,187
Rankings
Ranking Based On Selection: 18
Steven Lottes
Metrics
H-Index
i10 Index
Citation Counts
11
14
555
Computational Fluid Dynamics
multi-phase flows
reacting flows
hydraulics
Rankings
Ranking Based On Selection: 19
Kiran Yalamanchi
Metrics
H-Index
i10 Index
Citation Counts
10
10
332
Rankings
Ranking Based On Selection: 20
Joohan Kim
Metrics
H-Index
i10 Index
Citation Counts
9
8
227
Internal Combustion Engine
Ignition
Combustion
Soot
CFD Simulation
Rankings
Ranking Based On Selection: 21
Tarak Nath Nandi
Metrics
H-Index
i10 Index
Citation Counts
9
7
185
Computational Fluid Dynamics
Materials Science
Genomics
Cancer
Machine Learning
Rankings
Ranking Based On Selection: 22
Ya Gao
Metrics
H-Index
i10 Index
Citation Counts
8
8
429
Internal Combustion Engine
Fuel spray
Synchrotron X-ray imaging
Rankings
Ranking Based On Selection: 23
Essam M Elhannouny
Metrics
H-Index
i10 Index
Citation Counts
7
5
448
Combustion
Fuel and Emission
Internal Combustion Engine
Fuel Injection Systems and Sprays
Rankings
Ranking Based On Selection: 24
Thomas Gillis
Metrics
H-Index
i10 Index
Citation Counts
6
6
118
Computational Fluid Dynamics
High Performance Computing
Rankings
Ranking Based On Selection: 25
Saurabh Chawdhary
Metrics
H-Index
i10 Index
Citation Counts
6
5
210
Computational fluid dynamics
geological flows
renewable energy
biofluids
high performance computing
Rankings
Ranking Based On Selection: 26
Lander Ibarra
Metrics
H-Index
i10 Index
Citation Counts
6
0
73
Multiphase Flow
Heat Transfer
CFD
Numerical Methods
Uncertainty Quantification
Rankings
Ranking Based On Selection: 27
Severin Kamguia Simeu
Metrics
H-Index
i10 Index
Citation Counts
2
1
29
Automobile
Hybrid Powertrain
Power Electronic
System Modeling
Testings