Picture below illustrates the scope of my research.
Associate Professor
Data-driven and AI methods for high-fidelity Computational Fluid Dynamics (CFD).
I am an Associate Professor of Fluid Mechanics at Linköping University. I study complex fluid flows using high-fidelity Computational Fluid Dynamics (CFD). My research combines data-driven approaches and machine learning with CFD to develop efficient and reliable tools for simulation, model order reduction, control, and uncertainty quantification.
Picture below illustrates the scope of my research.
For a complete list of publications, visit:
For a full academic CV, kindly check out the GitHub repo: github.com/salehisaeed/CV
My research explores how Computational Fluid Dynamics (CFD) can be advanced through data science and machine learning to better understand, predict, and control complex flow systems. The focus is on developing efficient, robust, and generalizable methods that address both fundamental and applied problems in turbulent flows and turbomachinery. The following picture provides an overview of my research interests.
A major line of research focuses on developing Deep Reinforcement Learning (DRL) algorithms for active control of fluid flows. DRL offers a promising approach for discovering sophisticated strategies that go beyond classical methods, but current frameworks often face challenges of efficiency, robustness, and generalization.
Robust and efficient control of fluid flows
A central part of my research is the use and development of high-fidelity CFD methods for complex flow fields in turbomachinery. These flows are inherently challenging due to their strong unsteadiness, turbulence, and sensitivity to transient operating conditions. During my postdoctoral work at Chalmers, I developed advanced numerical methods in OpenFOAM for simulating the transient operation of hydraulic turbines, including novel semi-implicit mesh-deformation techniques to capture rapid changes in operating points. Such simulations provide the detailed flow data required for analysis, validation, and the development of reduced-order and data-driven models.
Highly resolved DES simulation of the Timişoara swirl generator, illustrating complex flow filed, including a strong rotating vortex rope. For more information, read the open-access article: Modal analysis of vortex rope using dynamic mode decomposition.
Vortical structures (red) and stagnant regions (blue) of the Francis-99 turbine during the shutdown operation. For more information, read the open-access article: An in-depth numerical analysis of transient flow field in a Francis turbine during shutdown.
Full startup operation of the Francis-99 turbine. Click on the box to see the video. For more information, read the open-access article: Flow-induced pulsations in Francis turbines during startup - A consequence of an intermittent energy system.
Temporal dynamics of the dominant DMD mode of the Timişoara swirl generator. Click on the box to see the video. For more information, read the open-access article: Modal analysis of vortex rope using dynamic mode decomposition.
Explored both operational and geometrical uncertainties in engineering applications.
Demonstrated robust optimization under uncertainty in practical flows.
Robust design of gas turbine blade. For more information, read the article: Robust optimization of the NASA C3X gas turbine vane under uncertain operational conditions.