Stability and dynamics of flows past bluff-bodies
Frequency selection in wake flows
Transient growth and optimal perturbations in boundary layer flows
Role of intermittency in laminar-turbulent transition
Effect of surface roughness
G. Balamurugan, S. S. Gopalakrishnan, and A. C. Mandal, An experimental observation of intermittent extreme events in boundary layer transition, Physica D: Nonlinear Phenomena, Vol 476, 134598, 2025 (doi.org/10.1016/j.physd.2025.134598)
R. Muniyammal, S. S. Gopalakrishnan, S. Kumar, and A. C. Mandal, On the instability of a flow past a spherical cap body, Lecture notes in Mechanical Engineering; Fluid Mechanics and Fluid Power, Springer, Singapore, Vol 7, 257, 2024 (doi.org/10.1007/978-981-99-7047-6_19 )
D. Dutta, I. Kanshana, S. S. Gopalakrishnan, and A. C. Mandal, Experimental studies on the frequency selection in flat plate wakes: mean flow stability analyses and low dimensional modelling, Physical Review Fluids, Vol 7, 044102, 2022 (doi.org/10.1103/PhysRevFluids.7.044102)
S. S. Gopalakrishnan, and A. C. Mandal, Transient growth in a flat plate boundary layer under a stream with uniform shear, Physics of Fluids, Vol 33, 114101, 2021 (doi.org/10.1063/5.0063983)
Carbon-dioxide sequestration
Role of temperature and viscosity gradients in buoyancy-driven instabilities in Hele-Shaw flows and porous media flows
Role of differential diffusion effects on buoyancy and viscosity driven instabilities
Scaling laws in buoyancy-driven and viscosity driven flows in porous media
On the onset of fingering instabilities in porous media flows
C. A. Middleton, S. S. Gopalakrishnan, I. Berenstein, B. Knaepen, J. L. Tison, and A. De Wit, The relative role of interfacial fingers and deep penetrating internally driven streamers in convective flows during sea-ice growth, Physical Review Fluids, Vol 7, 043503, 2022 (doi.org/10.1103/PhysRevFluids.7.043503)
S. S. Gopalakrishnan, B. Knaepen, and A. De Wit, Scalings of the mixing velocity for buoyancy-driven instabilities in porous media, Journal of Fluid Mechanics, Vol 914, A27, 2021 (doi.org/10.1017/jfm.2021.42)
S. S. Gopalakrishnan, On the instability of buoyancy-driven flows in porous media, Journal of Fluid Mechanics, Vol 892, A13, 2020 (doi.org/10.1017/jfm.2020.201)
S. S. Gopalakrishnan, J. Carballido-Landeira, B. Knaepen, and A. De Wit, Control of Rayleigh-Taylor instability onset time and convective velocity by differential diffusion effects, Physical Review E, Vol 98, 011101, 2018 (doi.org/10.1103/PhysRevE.98.011101)
S. S. Gopalakrishnan, J. Carballido-Landeira, A. De Wit, and B. Knaepen, Relative role of convective and diffusive mixing in the miscible Rayleigh-Taylor instability in porous media, Physical Review Fluids, Vol 2, 012501, 2017 (doi.org/10.1103/PhysRevFluids.2.012501)
Genesis of pathologies such as aneurysms and stenoses in arterial networks
Effect of surface characteristics on the dynamics of flows through channels and pipes
Role of fluid-structure interaction in flows through compliant geometries
Non-Newtonian flows through model arterial networks
C. Sumen, and S. S. Gopalakrishnan, Global stability analysis of flow through a stenosis: preliminary investigation on the effect of swirl, Computational Thermal Sciences (under review)
S. S. Gopalakrishnan, Dynamics and stability of flow through abdominal aortic aneurysms, PhD Thesis, Universite de Lyon 1, 2014 (theses.hal.science/tel-00954202/file/2014_Gopalakrishnan.pdf)
S. S. Gopalakrishnan, B. Pier, and A. Biesheuvel, Global stability analysis of flow through a fusiform aneurysm: steady flows, Journal of Fluid Mechanics, Vol 752, 90, 2014 (doi.org/10.1017/jfm.2014.292)
S. S. Gopalakrishnan, B. Pier, and A. Biesheuvel, Dynamics of pulsatile flow through model abdominal aortic aneurysms, Journal of Fluid Mechanics, Vol 758, 150, 2014 (doi.org/10.1017/jfm.2014.535)
Dissipative light bullets and localised structures in Kerr cavities
Optical frequency combs
Breathing of light bullets in Kerr resonators
S. S. Gopalakrishnan, M. Tlidi, M. Taki, and K. Panajotov, Breathing of dissipative light bullets of nonlinear polarization mode in Kerr resonators, Optics Letters, Vol 47, 3652, 2022 (doi.org/10.1364/OL.455758)
M. Tlidi, S. S. Gopalakrishnan, M. Taki, and K. Panajotov, Optical crystals and light-bullets in Kerr resonators, Chaos, Solitons & Fractals, Vol 152, 111364, 2021 (doi.org/10.1016/j.chaos.2021.111364)
B. Kostet, S. S. Gopalakrishnan, E. Averlant, Y. Soupart, K. Panajotov, and M. Tlidi, Vectorial dark dissipative solitons in Kerr resonators, OSA Continuum, Vol 4(5), 1564, 2021 (doi.org/10.1364/OSAC.418653)
S. S. Gopalakrishnan, K. Panajotov, M. Taki, and M. Tlidi, Dissipative light bullets in Kerr cavities: Multistability, clustering, and rogue waves, Physical Review Letters, 126, 153902, 2021 (doi.org/10.1103/PhysRevLett.126.153902)