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Mathematics Institute

Radu Cimpeanu

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Radu Cimpeanu

Associate Professor (Reader)

Office: D1.10
Phone: +44 (0)24 765 74809
Email: Radu dot Cimpeanu at warwick dot ac dot uk

  

 

Teaching Responsibilities 2025/26:

Term 1: MA146 Methods of Mathematical Modelling 1Link opens in a new window

Term 2: MA3H0 Numerical Analysis and PDEsLink opens in a new window

Past teaching: MA124 Mathematics by ComputerLink opens in a new window (2021), MA398 Matrix Analysis and AlgorithmsLink opens in a new window (2019-2021), MA931 MathSys CDT MSc ProjectLink opens in a new window (2020-2024), MA934 Numerical Algorithms and OptimisationLink opens in a new window (2022-2024), MA999 Topics in Mathematical Modelling - Industrial MathematicsLink opens in a new window (2019-2024)

Research Interests: My primary research interests lie at the interface between scientific computing, numerical solutions for partial differential equations, physical systems modelling (in particular fluid mechanics and acoustics), asymptotic analysis and industrial mathematics.

I work on methodologies used to address technologically relevant problems in areas such as microfluidics, water retention on aircraft surfaces, spray atomisation and electrohydrodynamics. I am also active in a more general industrial mathematical modelling setting, with previous projects in computational acoustics (perfectly matched layers in particular), operational research and performance optimisation in flow-related devices (e.g. vacuum pumps, pesticide sprays). I often participate in , as well as events within the as part of several Special Interest Groups.

I have in the past worked within the Oxford as Hooke Research Fellow () and the in Imperial College London (). I maintain active ties with both institutions, as well as several other UK-based and international groups.

Publications: a rather eclectic collection, with highlights including keywords such as violent drop impact, controlling multi-fluid systems with electric fields, but also taming acoustic/elastic waves using imaginary sponge layers or modelling shipyard activities. , as well as external auto-updating platforms such as , , and are the best places to check out the most up to date activity. I also try to maintain an active and a suitably clumsy to go with them.

As a taster, a few of my most relevant/recent papers are below. Please feel free to get in touch about any details, data, source code etc.

  • D.M. Harris, L. Alventosa, O. Sand, E. Silver, A. Mohammadi, T.C. Sykes, A.A. Castrejon-Pita, R. Cimpeanu, Bouncing to coalescence transition for droplet impact onto moving liquid pools, Journal of Fluid Mechanics, 1030, A16 1-14, 2026. doi: .
  • O.A. Holroyd, R. Cimpeanu, S.N. Gomes, Nonlinear estimators for the observation and stabilization of falling liquid films, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 481, 2327, 2025, doi: .
  • C.T. Gabbard, E.A. Ag眉ero, R. Cimpeanu, K. Kuehr, E. Silver, J.-W. Barotta, C.A. Galeano-Rios, D.M. Harris, Drop rebound at low Weber number, Journal of Fluid Mechanics, 1019, A25 1-34, 2025. doi: .
  • M. Kim, D.M. Harris, R. Cimpeanu, Computational modeling of fluid motion and mass transfer in a rocking bioreactor with application to cultivated meat production, International Journal of Multiphase Flow 193, 105375, 2025, doi: .
  • K.A. Phillips, R. Cimpeanu, P.A. Milewski, Modelling two-dimensional droplet rebound off deep fluid baths, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 481, 2317, 2025, doi: .
  • O.A. Holroyd, R. Cimpeanu, S.N. Gomes, Stabilisation of falling liquid films with restricted observations, , 2574-2579, 2024. doi: .
  • B.D. Fudge, R. Cimpeanu, A.A. Castrej贸n-Pita, Drop impact onto immiscible liquid films floating on pools, Scientific Reports 14, 13671, 2024. doi: .
  • O.A. Holroyd, R. Cimpeanu, S.N. Gomes, Linear Quadratic Regulation Control for Falling Liquid Films, SIAM Journal on Applied Mathematics 84.3, 940-960, 2024. doi: .
  • R. Cimpeanu, A.A. Castrej贸n-Pita, L.N. Lim, M. Vatish, E.X. Georgiou, A new flow-based design for double-lumen needles, Journal of Biomechanics 160, 111832 1-8, 2023. doi: .
  • T.C. Sykes, R. Cimpeanu, B.D. Fudge, J.R. Castrej贸n-Pita, A.A. Castrej贸n-Pita, Droplet impact dynamics on shallow pools, Journal of Fluid Mechanics 970, A34 1-12, 2023. doi: .
  • B.D. Fudge, R. Cimpeanu, A. Antkowiak, J.R. Castrej贸n-Pita, A.A. Castrej贸n-Pita, Drop splashing after impact onto immiscible pools of different viscosities, Journal of Colloid and Interface Science 641, 585-594, 2023, doi: .
  • L.F.L. Alventosa, R. Cimpeanu, D.M. Harris, Inertio-capillary rebound of a droplet impacting a fluid bath, Journal of Fluid Mechanics 958, A24 1-31, 2023, doi: .
  • A.W. Wray, R. Cimpeanu, S.N. Gomes, Electrostatic control of the Navier-Stokes equations for thin films, Physical Review Fluids 7, L122001, 2022, doi: .
  • B.D. Fudge, R. Cimpeanu, A.A. Castrejon-Pita, Dipping into a new pool: the interface dynamics of drops impacting onto a different liquids, Physical Review E 104 065102:1-10, 2021. doi: .
  • M.P. Dalwadi, R. Cimpeanu, H. Ockendon, J. Ockendon, T. Mullin, Levitation of a cylinder by a thin viscous film, Journal of Fluid Mechanics 917, A28 1-27, 2021. doi: .
  • R. Cimpeanu, S.N. Gomes, D.T. Papageorgiou, Active control of liquid film flows: beyond reduced-order models, Nonlinear Dynamics 104, 267-287, 2021, doi: .
  • M.J. Negus, M.R. Moore, J.M. Oliver, R. Cimpeanu, Droplet impact onto a spring-supported plate: analysis and simulations, Journal of Engineering Mathematics 128, 1-27, 2021, doi: .
  • C.A. Galeano-Rios, R. Cimpeanu, I. Bauman, A. MacEwen, P.A. Milewski, D.M. Harris, Capillary-scale solid rebounds: Experiments, modelling and simulations, Journal of Fluid Mechanics 912 A17, 1-31, 2021, doi: .
  • C.J. Ojiako, R. Cimpeanu, H.C. Hemaka Bandulasena, R. Smith, D. Tseluiko, Deformation and dewetting of liquid films under gas jets, Journal of Fluid Mechanics 905 A18, 1-38, 2020, doi: .
  • A.W. Wray, R. Cimpeanu, Reduced-order modelling of thick inertial flows around rotating cylinders, Journal of Fluid Mechanics 898 A1 1-33, 2020, doi: .
  • R.J. Tomlin, R. Cimpeanu, D.T. Papageorgiou, Instability and dripping of electrified liquid films flowing down inverted substrates, Physical Review Fluids 5, 013703, 2020, doi: and associated in APS Physics.
  • R. Cimpeanu, M.R. Moore, Early-time jet formation in liquid-liquid impact problems: theory and simulations, Journal of Fluid Mechanics 856, 764-796, 2018, doi: .
  • R. Cimpeanu, D.T. Papageorgiou, Three-dimensional high speed drop impact onto solid surfaces at arbitrary angles, International Journal of Multiphase Flow 107, 192-2017, 2018, doi: .
  • R. Cimpeanu, M.T. Devine, C O'Brien, A simulation model for the management and expansion of extended port terminal operations, Transportation Research Part E 98, 105-131, 2017, doi: .
  • R. Cimpeanu, A. Martinsson, M. Heil, A parameter-free perfectly matched layer formulation for the finite-element-based solution of the Helmholtz equation, Journal of Computational Physics 296, 329-347, 2015, doi: .
  • R. Cimpeanu, D.T. Papageorgiou and P.G. Petropoulos, On the control and suppression of the Rayleigh-Taylor instability using electric fields, Physics of Fluids 26, 022105, 2014, doi: .

Workshops/conferences/seminars:

  • 2025: , , ,
  • 2024: , the New Trends in Optimal Control 糖心TV in Venice workshop, the Lorentz Center workshop on , the , the INI workshop at the University of East Anglia, EFDC1: the 1st .
  • 2023: , , INI: , ICMS: , .
  • 2022: , , Interfacial flows , , , .
  • 2021: , , .
  • 2020: Virtual Meeting.
  • 2019: , BIRS 2019 thin films , , , .

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