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On the Secondary Instability of Forced and Unforced Laminar Separation Bubbles
(2015-01-01)
Previous studies demonstrate that the primary instability of laminar separation bubbles (LSB) on a flat-plate in the absence of external forcing is a three-dimensional centrifugal one. This work develops a weakly non-linear ...
The effect of compressibility on the primary global instability of unforced laminar separation bubbles
(2019-12-01)
Laminar separation bubbles present a three-dimensional self-excited instability mechanism which leads to the appearance of spanwise-periodic structures. In incompressible flow, this mechanism was found to become active at ...
Impacts of wind stress changes on the global heat transport, baroclinic instability, and the thermohaline circulation
(Advances in Meteorology, 2018)
Self-excited primary and secondary instability of laminar separation bubbles
(2020-01-01)
The self-excited instabilities acting on laminar separation bubbles in the absence of external forcing are studied by means of linear stability analysis and direct numerical simulation. Previous studies demonstrated the ...
Maternal union instability and childhood mortality risk in the Global South, 2010–14
Efforts to improve child survival in lower-income countries typically focus on fundamental factors such as economic resources and infrastructure provision, even though research from post-industrial countries confirms that ...
Mode selection in trailing vortices: harmonic response of the non-parallel Batchelor vortex
(Cambridge Univ. Press, 2016)
In the present study, the response of model trailing vortices subjected to a harmonic forcing is studied. To this purpose, a globally stable non-parallel Batchelor vortex is considered as the baseflow. Direct numerical ...
Compressible modes in a square lid-driven cavity
(Elsevier B.V., 2015-07-01)
This paper studies the effect of compressibility on the linear stability of a two-dimensional lid-driven cavity flow in the subsonic regime. The base flow is generated by high fidelity direct numerical simulation and a ...
Instability onset for submerged cylinders
(American Institute of Physics, 2019-01)
This paper describes how the global stability of a circular cylinder is affected when submerged in a two-phase gravitational flow. The flow behavior is governed by both the Reynolds and the Froude number, while the depth ...