I mainly work on numerical methods for computational fluid dynamics, including :

• Immersed boundary method
• Lattice Boltzmann method
• Large eddy simulation
• Turbulence wall model
• Fluid-structure interaction
• Interfacial flow

with application to industrial fields

• Aeronautics and Astronautics
• Fluid machinery
• Ship hydrodynamics
• Flow induced vibration
• Particle-laden flows

Editorial board :

• Editorial board members, Scientific Reports (IF 4.9，JCR Q1)
• Guest editor, Mathematics (IF 2.3, JCR Q1)
• Early career editorial board, Physics (IF 1.4，JCR Q2)
• Early career editorial board, Theoretical and Applied Mechanics Letters (IF 3.3, JCR Q2)
• Early career editorial board, Advances in Aeronautical Science and Engineering

Association members :

• The Chinese Society of Theoretical and Applied Mechanics (CSTAM)

Teaching :

• Fluid Mechanics: Instructor at Renmin University of China, (2023 Fall; 2024 Fall)

Peer reviewed journals :

• Journal of Computational Physics
• Computers & Fluids
• Physics of Fluids
• Ocean Engineering
• Theoretical and Computational Fluid Dynamics
• Advances in Applied Mathematics and Mechanics
• Progress in Computational Fluid Dynamics, An International Journal
• Geoscientific Model Development
• Fluid Dynamics Research
• Axioms
• Scientific Reports
• Theoretical and Applied Mechanics Letters

Research projects :

• 2025-2027, Development and engineering applications of advanced fluid computation software based on lattice Boltzmann method, Principal Investigator
• 2024-2025, Flow-induced vibration analysis based on immersion boundary method, Principal Investigator
• 2024-2025, Large-scale parallel computing for lattice Boltzmann flow field simulation, Principal Investigator
• 2023-2026, High-level talent project, Institute of Mechanics, Chinese Academy of Sciences, Principal Investigator

Academic links

• ORCID:  https://orcid.org/0000-0002-7406-562X
• Scopus:   https://www.scopus.com/authid/detail.uri?authorId=56492096900
• WOS:      https://webofscience.clarivate.cn/wos/author/record/ABC-9855-2020

Journal papers

1. X. Wang, A. Ouahsine, E. Farah, S.-G. Cai, CFD/NDDA coupling to study the stability of discrete breakwaterwith various shaped armour units subjected to violent wave, Journal of Fluids and Structures, 147:104664, 2026
2. S. Mozaffari, S.-G. Cai*, J. Jacob, P. Sagaut, Lattice Boltzmann k-ω SST based hybrid RANS/LES simulations of turbulent flows, Journal of Computational Physics, 514:113269, 2024.
3. S.-G. Cai, J. Jacob, P. Sagaut, Immersed boundary based near-wall modeling for large eddy simulation of turbulent wall-bounded flow, Computers & Fluids, 259:105893, 2023.
4. X. Wang, C. Cai, S.-G. Cai, T. Wang, Z. Wang, J. Song, X. Rong, Q. Li, A review of aerodynamic and wake characteristics of floating offshore wind turbines, Renewable and Sustainable Energy Reviews, 175:113144, 2023.
5. S.-G. Cai, S. Mozaffari, J. Jacob, P. Sagaut, Application of immersed boundary based turbulence wall modeling to the Ahmed body aerodynamics, Physics of Fluids, 34:095106, 2022.
6. S.-G. Cai, A. Ouahsine, Y. Hoarau, Moving immersed boundary method for fluid-solid interaction, Physics of Fluids, 34:053307, 2022.
7. S.-G. Cai, P. Sagaut, Explicit wall model for large eddy simulation, Physics of Fluids, 33:041703, 2021.
8. J. Degrigny, S.-G. Cai, J.-F. Boussuge, P. Sagaut, Improved wall model treatment for aerodynamic flows in LBM, Computers & Fluids, 227:105041, 2021.
9. S.-G. Cai, J. Degrigny, J.-F. Boussuge, P. Sagaut, Coupling of turbulence wall models and immersed boundaries on Cartesian grids, Journal of Computational Physics, 429:109995, 2021.
10. S.-G. Cai, A. Ouahsine, J. Favier, Y. Hoarau, Moving immersed boundary method, International Journal for Numerical Methods in Fluids, 85(5): 288-323, 2017.
11. S.-G. Cai, A. Ouahsine, J. Favier, Y. Hoarau, Implicit immersed boundary method for fluid-structure interaction, La Houille Blanche, 1:33-36, 2017.
12. S.-G. Cai, A. Ouahsine, J. Favier, Y. Hoarau, Improved implicit immersed boundary method via operator splitting, In Ibrahimbegovic, A. editor, Computational Methods for Solids and Fluids: Multiscale Analysis, Probability Aspects, Model Reduction and Software Coupling, 49-66, 2016.
13. S.-G. Cai, A. Ouahsine, P. Sergent, Modelling wave energy conversion of a semi-submerged heaving cylinder, In Ibrahimbegovic, A. editor, Computational Methods for Solids and Fluids: Multiscale Analysis, Probability Aspects, Model Reduction and Software Coupling, 67-79, 2016.
14. S.-G. Cai, A. Ouahsine, J. Favier, Y. Hoarau, H. Smaoui, Immersed boundary method for the simulation of lid-driven cavity flow with an embedded cylinder, Proceedings of the VI International Conference on Coupled Problems in Science and Engineering, Venice, Italy, May 18-20, 2015.
15. S.-G. Cai, A. Ouahsine, H. Smaoui, J. Favier, Y. Hoarau, An efficient implicit direct forcing immersed boundary method for incompressible flows, Proceedings of the 3rd International Conference on Mathematical Modeling in Physical Sciences (ICMSQUARE), Madrid, Spain, August 28-31, 2014.

International keynote presentations :

• ​2025.09.27-2025.09.30，The16th International Conference on Computational Methods (ICCM2025), Hangzhou, China
• 2025.06.25-2025.06.27，The 7th International Conference on Multi-scale Computational Methods for Solids and Fluids (ECCOMAS MSF 2025), Split, Croatia