Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Cimpeanu, Radu"'
We propose a method to stabilise a solution to equations describing the interface of thin liquid films falling under gravity with a finite number of actuators and restricted observations. As for many complex systems, full observation of the system st
Externí odkaz:
http://arxiv.org/abs/2407.06906
In order for a droplet to rebound rather than coalesce from a liquid surface, there must be a layer of air persisting throughout the impact. This air layer acts as a lubricant to the system and permits a pressure transfer between the two liquid bodie
Externí odkaz:
http://arxiv.org/abs/2406.16750
Publikováno v:
Journal of Biomechanics 160, 111832, 2023
Oocyte retrieval forms a crucial part of in vitro fertilisation treatment and its ultimate outcome. Standard double-lumen needles, which include a sequence of aspiration and flushing steps, are characterised by a similar success rate to single-lumen
Externí odkaz:
http://arxiv.org/abs/2305.06460
We propose and analyse a new methodology based on linear-quadratic regulation (LQR) for stabilising falling liquid films via blowing and suction at the base. LQR methods enable rapidly responding feedback control by precomputing a gain matrix, but ar
Externí odkaz:
http://arxiv.org/abs/2301.11379
The rebound of droplets impacting a deep fluid bath is studied both experimentally and theoretically. Millimetric drops are generated using a piezoelectric droplet-on-demand generator and normally impact a bath of the same fluid. Measurements of the
Externí odkaz:
http://arxiv.org/abs/2209.13276
Publikováno v:
Physical Review Fluids 7, L122001 (2022)
A robust control scheme is derived and tested for the Navier-Stokes equations for two-dimensional multiphase flow of a thin film underneath an inclined solid surface. Control is exerted via the use of an electrode parallel to the substrate, which ind
Externí odkaz:
http://arxiv.org/abs/2207.12019
Autor:
Fudge, Ben D.1,2 (AUTHOR), Cimpeanu, Radu2,3 (AUTHOR), Castrejón-Pita, Alfonso A.1 (AUTHOR) alfonso.castrejon-pita@eng.ox.ac.uk
Publikováno v:
Scientific Reports. 6/13/2024, Vol. 14 Issue 1, p1-9. 9p.
Autor:
Galeano-Rios, Carlos A., Cimpeanu, Radu, Bauman, Isabelle A., MacEwen, Annika, Milewski, Paul A., Harris, Daniel M.
Publikováno v:
Journal of Fluid Mechanics , Volume 912 , 10 April 2021 , A17
A millimetre-size superhydrophobic sphere impacting on the free surface of a quiescent bath can be propelled back into the air by capillary effects and dynamic fluid forces, whilst transferring part of its energy to the fluid. We report the findings
Externí odkaz:
http://arxiv.org/abs/2011.00086
Publikováno v:
Journal of Engineering Mathematics 128 (3), 2021
The high-speed impact of a droplet onto a flexible substrate is a highly nonlinear process of practical importance which poses formidable modelling challenges in the context of fluid-structure interaction. We present two approaches aimed at investiga
Externí odkaz:
http://arxiv.org/abs/2009.09872
The ability to robustly and efficiently control the dynamics of nonlinear systems lies at the heart of many current technological challenges, ranging from drug delivery systems to ensuring flight safety. Most such scenarios are too complex to tackle
Externí odkaz:
http://arxiv.org/abs/2008.12746