Imperial College London

Radu Cimpeanu

Faculty of Natural SciencesDepartment of Mathematics

Honorary Research Associate



radu.cimpeanu11 CV




742Huxley BuildingSouth Kensington Campus





See 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 as of 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

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

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

Anderson TG, Cimpeanu R, Papageorgiou DT, et al., 2017, Electric field stabilization of viscous liquid layers coating the underside of a surface, Physical Review Fluids, Vol:2, ISSN:2469-990X

Kalogirou A, Cîmpeanu R, Keaveny EE, 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

More Publications