Extreme dynamics of wave groups on jet currents (2023)
Journal Article
Slunyaev, A. V., & Shrira, V. I. (2023). Extreme dynamics of wave groups on jet currents. Physics of Fluids, 35(12), Article 126606. https://doi.org/10.1063/5.0180658

Rogue waves are known to be much more common on jet currents. A possible explanation was put forward in Shrira and Slunyaev [“Nonlinear dynamics of trapped waves on jet currents and rogue waves,” Phys. Rev. E 89, 041002(R) (2014)] for the waves trapp... Read More about Extreme dynamics of wave groups on jet currents.

On the physical mechanism of front-back asymmetry of non-breaking gravity-capillary waves (2021)
Journal Article
Dosaev, A., Troitskaya, Y. I., & Shrira, V. I. (2021). On the physical mechanism of front-back asymmetry of non-breaking gravity-capillary waves. Journal of Fluid Mechanics, 906, Article ARTN A11. https://doi.org/10.1017/jfm.2020.696

In nature, the wind waves of the gravity–capillary range are noticeably skewed forward. The salient feature of such waves is a characteristic pattern of capillary ripples on their crests. The train of these ‘parasitic capillaries’ is not symmetric wi... Read More about On the physical mechanism of front-back asymmetry of non-breaking gravity-capillary waves.

Boundary layer collapses described by the two-dimensional intermediate long-wave equation (2020)
Journal Article
Oloo, J., & Shrira, V. (2020). Boundary layer collapses described by the two-dimensional intermediate long-wave equation. Theoretical and Mathematical Physics, 203, 512 - 523. https://doi.org/10.1134/S0040577920040078

We study the nonlinear dynamics of localized perturbations of a confined generic boundary-layer shear flow in the framework of the essentially two-dimensional generalization of the intermediate long-wave (2d-ILW) equation. The 2d-ILW equation was ori... Read More about Boundary layer collapses described by the two-dimensional intermediate long-wave equation.

Upper-ocean Ekman current dynamics: a new perspective (2020)
Journal Article
Shrira, V., & Almelah, R. B. (2020). Upper-ocean Ekman current dynamics: a new perspective. Journal of Fluid Mechanics, 887, Article A24. https://doi.org/10.1017/jfm.2019.1059

The work examines upper-ocean response to time-varying winds within the Ekman paradigm. Here, in contrast to the earlier works we assume the eddy viscosity to be both time and depth dependent. For self-similar depth and time dependence of eddy viscos... Read More about Upper-ocean Ekman current dynamics: a new perspective.

Spectral evolution of weakly nonlinear random waves: kinetic description versus direct numerical simulations (2018)
Journal Article
Annenkov, S. Y., & Shrira, V. I. (2018). Spectral evolution of weakly nonlinear random waves: kinetic description versus direct numerical simulations. Journal of Fluid Mechanics, 844, 766 -795. https://doi.org/10.1017/jfm.2018.185

Kinetic equations are widely used in many branches of science to describe the evolution of random wave spectra. To examine the validity of these equations, we study numerically the long-term evolution of water wave spectra without wind input using th... Read More about Spectral evolution of weakly nonlinear random waves: kinetic description versus direct numerical simulations.

Intrinsic flame instabilities in combustors: Analytic description of a 1-D resonator model (2017)
Journal Article
Kanta Mukherjee, N., & Shrira, V. (2017). Intrinsic flame instabilities in combustors: Analytic description of a 1-D resonator model. Combustion and Flame, 185, 188 -209. https://doi.org/10.1016/j.combustflame.2017.07.012

The study is concerned with theoretical examination of thermo-acoustic instabilities in combustors and focuses on recently discovered ‘flame intrinsic modes’. These modes differ qualitatively from the acoustic modes in a combustor. Although these fla... Read More about Intrinsic flame instabilities in combustors: Analytic description of a 1-D resonator model.