Hydrodynamic instabilities play a fundamental role across a wide range of scientific and engineering disciplines, including aerospace and propulsion, energy systems, geophysical and environmental flows, astrophysics, materials processing, inertial confinement fusion, and emerging micro- and nanoscale technologies. |
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Flow physics becomes increasingly complex when multiple instability mechanisms—such as Richtmyer–Meshkov, Rayleigh–Taylor, Kelvin–Helmholtz, shear-layer, and buoyancy-driven instabilities—interact with turbulence, shock waves, multiphase interfaces, chemical reactions, and non-equilibrium transport phenomena. These processes are central not only to classical fluid mechanics but also to extreme natural and high-energy environments, including astrophysical explosions and plasma–fluid systems. | This Special Issue brings together recent advances in theoretical analysis, state-of-the-art experimental investigations, and high-fidelity computational and data-driven approaches, with emphasis on fundamental mechanisms, nonlinear evolution, mixing and transition processes, and broad scientific and engineering applications. | Topics covered include, but are not limited to: | |  | Fundamental and applied hydrodynamic instabilities | | | | Shock-driven and high-speed flow phenomena | | | | Flow stability, transition, and nonlinear dynamics | | | | Instability-induced turbulence and mixing | | | | Multiphase, multicomponent, and stratified flows | | | | | Compressible, reactive, and non-equilibrium flows | | | | High-fidelity numerical simulations and modeling | | | | Advanced experimental techniques and diagnostics | | | | Reduced-order, data-driven, and machine-learning methods | | | | Dr. Satyvir Singh, RWTH Aachen University, Germany |
Dr. Mukesh Kumar Awasthi, Babasaheb Bhimrao Ambedkar University, India |
| | Submission Deadline: August 31, 2026 | | | | |
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