Summary
Head to my personal webpage for the most up-to-date information and additional resources.
My primary role currently lies with the University of Warwick, as assistant professor in the Warwick Mathematics Institute since September 2019. Prior to that I was a Hooke Fellow in the Mathematical Institute at the University of Oxford.
In the following years I will continue holding an honorary affiliation with the Department of Mathematics in Imperial College London, undertaking co-supervision roles, conducting research in the areas of asymptotic methods for interfacial flows, computational fluid dynamics and industrial mathematics, as well as participating in outreach activities.
As a post-doctoral research associate in the Department of Mathematics until July 2017, I worked as part of the Applied Mathematics and Mathematical Physics Section and was a member of the Fluid Dynamics and LFC-UK (Laminar Flow Control) groups, working with Prof. Demetrios T. Papageorgiou and Prof. Anatoly I. Ruban.
My research was concentrated on the theoretical and numerical study of fluid-fluid interfaces in immiscible multi-layer flows, with a particular focus in electrohydrodynamic control in microfluidics. Past projects revolved around the control and suppression of the Rayleigh-Taylor instability via electric fields, while more recent efforts have been dedicated towards topics such as enhanced microfluidic mixing, electrohydrodynamically induced pumping and polymer self-assembly in confined geometries. Additionally, I am involved in high Reynolds number flow studies of droplet impact and water retention on solid surfaces, as well as the effect of the resulting thin liquid films on the influence of boundary-layer separation (multiple deck theory). The common core of the projects consists in the physical modelling approach, theoretical (asymptotic) exploration, followed by validation and extension to highly nonlinear regimes via direct numerical simulations (DNS). Efforts are directed towards obtaining results of practical significance in a wide range of applications, with several successful industrial partnerships built in either academic or consultancy roles.
Selected Publications
Journal Articles
Fudge BD, Cimpeanu R, Castrejon-Pita AA, 2021, Dipping into a new pool: the interface dynamics of drops impacting onto a different liquid, Physical Review E, Vol:104, ISSN:1539-3755
Negus MJ, Moore MR, Oliver JM, et al., 2021, Droplet impact onto a spring-supported plate: analysis and simulations, Journal of Engineering Mathematics, Vol:128, ISSN:0022-0833
Dalwadi MP, Cimpeanu R, Ockendon H, et al., 2021, Levitation of a cylinder by a thin viscous film, Journal of Fluid Mechanics, Vol:917, ISSN:0022-1120
Galeano-Rios CA, Cimpeanu R, Bauman IA, et al., 2021, Capillary-scale solid rebounds: experiments, modelling and simulations, Journal of Fluid Mechanics, Vol:912, ISSN:0022-1120
Cimpeanu R, Gomes SN, Papageorgiou DT, 2021, Active control of liquid film flows: beyond reduced-order models, Nonlinear Dynamics, Vol:104, ISSN:0924-090X, Pages:267-287
Wray AW, Cimpeanu R, 2020, Reduced-order modelling of thick inertial flows around rotating cylinders, Journal of Fluid Mechanics, Vol:898, ISSN:0022-1120
Tomlin R, Cimpeanu R, Papageorgiou D, 2020, Instability and dripping of electrified liquid films flowing down inverted substrates, Physical Review Fluids, Vol:5, ISSN:2469-990X, Pages:013703-1-013703-34
Cimpeanu R, Moore MR, 2018, Early-time jet formation in liquid-liquid impact problems: theory and simulations, Journal of Fluid Mechanics, Vol:856, ISSN:0022-1120, Pages:764-796