My primary role currently lies with the University of Warwick as assistant professor in the Warwick Mathematics Institute as of September 2019. Please see my institutional homepage for the latest academic activity updates.
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.
Tomlin R, Cimpeanu R, Papageorgiou D, Instability and dripping of electrified liquid films flowing down inverted substrates, Physical Review Fluids, ISSN:2469-990X
et al., 2020, Boundary layers in Helmholtz flows, Journal of Fluid Mechanics, Vol:882, ISSN:0022-1120
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
Cimpeanu R, Papageorgiou DT, 2018, Three-dimensional high speed drop impact onto solid surfaces at arbitrary angles, International Journal of Multiphase Flow, Vol:107, ISSN:0301-9322, Pages:192-207
et al., 2017, Electric field stabilization of viscous liquid layers coating the underside of a surface, Physical Review Fluids, Vol:2, ISSN:2469-990X
et al., 2016, Capturing nonlinear dynamics of two-fluid Couette flows with asymptotic models, Journal of Fluid Mechanics, Vol:806, ISSN:1469-7645, Pages:R1-R13
Cimpeanu R, Martinsson A, Heil M, 2015, A parameter-free perfectly matched layer formulation for the finite-element-based solution of the Helmholtz equation, Journal of Computational Physics, Vol:296, ISSN:1090-2716, Pages:329-347
Cimpeanu R, Papageorgiou DT, Petropoulos PG, 2014, On the control and suppression of the Rayleigh-Taylor instability using electric fields, Physics of Fluids, Vol:26, ISSN:1070-6631