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  • Conference paper
    Markall GR, Rathgeber F, Mitchell L, Loriant N, Bertolli C, Kelly PHJet al., 2013,

    Performance-Portable Finite Element Assembly Using PyOP2 and FEniCS

    , International Supercomputing Conference (ISC), Publisher: Springer, Pages: 279-289, ISSN: 0302-9743

    We describe a toolchain that provides a fully automated compilation pathway from a finite element domain-specific language to low-level code for multicore and GPGPU platforms. We demonstrate that the generated code exceeds the performance of the best available alternatives, without requiring manual tuning or modification of the generated code. The toolchain can easily be integrated with existing finite element solvers, providing a means to add performance portable methods without having to rebuild an entire complex implementation from scratch.

  • Journal article
    Ferguson DJ, Maclennan J, Bastow ID, Pyle D, Jones SM, Keir D, Blundy DJ, Plank T, Yirgu Get al., 2013,

    Melting during late-stage rifting in Afar is hot and deep

    , Nature, Vol: 499, Pages: 70-74, ISSN: 0028-0836

    Investigations of a variety of continental rifts and margins worldwide have revealed that a considerable volume of melt can intrude into the crust during continental breakup(1-8), modifying its composition and thermal structure. However, it is unclear whether the cause of voluminous melt production at volcanic rifts is primarily increased mantle temperature or plate thinning(1,2,8-12). Also disputed is the extent to which plate stretching or thinning is uniform or varies with depth with the entire continental lithospheric mantle potentially being removed before plate rupture(13-16). Here we show that the extensive magmatism during rifting along the southern Red Sea rift in Afar, a unique region of sub-aerial transition from continental to oceanic rifting, is driven by deep melting of hotter-than-normal asthenosphere. Petrogenetic modelling shows that melts are predominantly generated at depths greater than 80 kilometres, implying the existence of a thick upper thermo-mechanical boundary layer in a rift system approaching the point of plate rupture. Numerical modelling of rift development shows that when breakup occurs at the slow extension rates observed in Afar, the survival of a thick plate is an inevitable consequence of conductive cooling of the lithosphere, even when the underlying asthenosphere is hot. Sustained magmatic activity during rifting in Afar thus requires persistently high mantle temperatures, which would allow melting at high pressure beneath the thick plate. If extensive plate thinning does occur during breakup it must do so abruptly at a late stage, immediately before the formation of the new ocean basin(16).

  • Journal article
    Todman LC, Ireson AM, Butler AP, Templeton MRet al., 2013,

    Modelling vapor flow from a pervaporative irrigation system

    , Vadose Zone Journal
  • Conference paper
    Hannon MJ, Bolton RPG, 2013,

    More than just business? Local Authority engagement with the Energy Service Company (ESCo) business model and implications for UK energy system change

    , Urban energy governances, North and South; International roundtable seminar
  • Report
    Hannon MJ, 2013,

    UKERC Energy Research Atlas: Socio-Economic Issues

  • Journal article
    Westacott P, Tumbleston JR, Shoaee S, Fearn S, Bannock JH, Gilchrist JB, Heutz S, DeMello J, Heeney M, Ade H, Durrant J, McPhail DS, Stingelin N, Westacott P, Tumbleston JR, Shoaee S, Fearn S, Bannock JH, Gilchrist JB, Heutz S, DeMello J, Heeney M, Ade H, Durrant J, McPhail DS, Stingelin Net al., 2013,

    On the role of intermixed phases in organic photovoltaic blends

    , Energy & Environmental Science, ISSN: 1754-5692
  • Journal article
    Brandt A, Grasvik J, Hallett JP, Welton Tet al., 2013,

    Deconstruction of lignocellulosic biomass with ionic liquids

    , Green Chem., Vol: 15, Pages: 550-583-550-583

    This paper reviews the application of ionic liquids to the deconstruction and fractionation of lignocellulosic biomass, in a process step that is commonly called pretreatment. It is divided into four parts: the first gives background information on lignocellulosic biomass and ionic liquids; the second focuses on the solubility of lignocellulosic biomass (and the individual biopolymers within it) in ionic liquids; the third emphasises the deconstruction effects brought about by the use of ionic liquids as a solvent; the fourth part deals with practical considerations regarding the design of ionic liquid based deconstruction processes.

  • Book chapter
    Reich S, Cotter CJ, 2013,

    Ensemble filter techniques for intermittent data assimilation

    , Large Scale Inverse Problems. Computational Methods and Applications in the Earth Sciences, Editors: Cullen, Freitag, Kindermann, Scheichl, Publisher: Walter de Gruyter, Berlin, Pages: 1-46
  • Journal article
    Jones GA, Kendall J-M, Bastow ID, Raymer DGet al., 2013,

    On locating microseismic events using borehole data

    , Geophysical Prospecting, Pages: 1-16
  • Conference paper
    Vire A, Xiang J, Piggott M, Spinneken J, Pain Cet al., 2013,

    Numerical Modelling of Fluid-structure Interactions for Floating Wind Turbine Foundations

    , Twenty-third International Offshore and Polar Engineering Conference, Pages: 377-382

    The aim of this study is to model the interactions between fluids and solids using fully nonlinear models. Non-linearity is important in the context of floating wind turbines, for example, to model breaking waves impacting on the structure and the effect of the solid’s elasticity. In this work, the fluid- and solid-dynamics equations are solved using separate finite-element models, which are coupled at every time step. This enables the mutual interactions between fluids and moving solids to be modelled. Importantly, the coupling algorithm ensures that the action-reaction principle is satisfied at a discrete level, independently of the order of representation of the discrete fields in each model. To the authors’ knowledge, the present algorithm is novel in that it can simultaneously handle (i) non-matching fluid and solid meshes, (ii) different polynomial orders of the basis functions on each mesh, and (iii) different fluid and solid time steps. Results are shown for: (i) a bottom-mounted pile subjected to small-amplitude waves in a numerical wave tank, and (ii) a truncated pile floating at an interface between air and water.

  • Book chapter
    Slade R, Bauen A, 2013,

    Biomass use on a global scale

    , Encyclopedia of Sustainability Science and Technology, Publisher: Springer
  • Book chapter
    St John FAV, Keane AM, Milner-Gulland EJ, 2013,

    Effective conservation depends on understanding human behaviour

    , Key Topics in Conservation Biology 2, Editors: Macdonald, Willis, Publisher: John Wiley & Sons, Ltd, ISBN: 978-0-470-65875-8
  • Conference paper
    Bell RE, Jackson CA-L, Elliott G, Gawthorpe RL, Michelsen L, Sharp IRet al., 2013,

    Reconstructing rift geometry to gain insights into major unconformity development associated with Late Jurassic rifting in the Halten Terrace, offshore Norway

    , 30th IAS Meeting of Sedimentology
  • Journal article
    Papworth S, Milner-Gulland EJ, Slocombe K, 2013,

    Correction: Hunted Woolly Monkeys (Lagothrix poeppigii) Show Threat-Sensitive Responses to Human Presence.

    , PLoS One, Vol: 8

    [This corrects the article on p. e62000 in vol. 8.].

  • Conference paper
    Reeve MT, Bell RE, Jackson CA-L, 2013,

    The influence of Caledonian structures on Late Jurassic faulting offshore western Norway: new insights from 3D seismic reflection data, STUDENT ORAL PRESENTATION PRIZE WINNER

    , Tectonic Studies Group Annual Meeting
  • Conference paper
    Bell RE, Jackson CA-L, Whipp PS, Clements Bet al., 2013,

    Quantifying the timing and magnitude of fault reactivation in the northern North Sea

    , Tectonic Studies Group Annual Meeting
  • Conference paper
    Bell RE, McNeill LC, Nixon C, Henstock T, Bull J, Christodoulou D, Papatheodorou G, Taylor B, Ferentinos G, Sakellariou D, Lykousis V, Sachpazi M, Ford M, Goodliffe A, Leeder M, Gawthorpe G, Collier R, Clements Bet al., 2013,

    Basin evolution and the distribution of strain within the Gulf of Corinthrift

    , EGU General Assembly
  • Journal article
    Darbyshire FA, Eaton DW, Bastow ID, 2013,

    Seismic imaging of the lithosphere beneath Hudson Bay: Episodic growth of the Laurentian mantle keel

    , Earth and Planetary Science Letters, Vol: 373, Pages: 179-193
  • Journal article
    Alhajaj A, Mac Dowell N, Shah N, 2013,

    Multiscale Design and Analysis of CO₂ Capture, Transport and Storage Networks

    , Energy Procedia, Vol: 37, Pages: 2552-2561, ISSN: 1876-6102
  • Journal article
    Shevchenko I, Kaltenbacher M, Wohlmuth B, 2013,

    Absorbing boundary conditions for a wave equation with a temperature dependent speed of sound

    , J. Comput. Acoust., Vol: 21, Pages: 1-20
  • Journal article
    Vaik I, Paal G, Kaltenbacher M, Triebenbacher S, Becker S, Shevchenko Iet al., 2013,

    Aeroacoustics of the edge tone: 2D-3D coupling between CFD and CAA

    , Acta. Acust. United Ac., Vol: 99, Pages: 245-259
  • Conference paper
    Bell RE, Morgan JV, Warner M, 2013,

    Recovering physical property information from subduction plate boundaries using 3D full-waveform seismic inversion

    , AGU Fall Meeting
  • Conference paper
    Wilson DJ, McNeill LC, Henstock T, Westbrook GK, Bangs NL, Tobin HJ, Moore GF, Pickering KT, Saffer DM, Bell RE, Sutherland R, Henrys SAet al., 2013,

    Along-strike and down-dip variations in décollement physical properties relative to input parameters

    , AGU Fall Meeting
  • Conference paper
    Nixon CW, McNeill LC, Henstock T, Bull JM, Bell RE, Christodoulou D, Papatheodorou G, Taylor B, Ferentinos G, Sakellariou D, Lykousis V, Sachpazi M, Ford M, Goodliffe AM, Leeder M, Gawthorpe RL, Collier RE, Clements Bet al., 2013,

    Basin evolution, organization of faulting and the distribution of displacement within the Gulf of Corinth rift

    , AGU Fall Meeting
  • Journal article
    Rognes ME, Ham DA, Cotter CJ, McRae ATTet al., 2013,

    Automating the solution of PDEs on the sphere and other manifolds in FEniCS 1.2

    , Geoscientific Model Development, Vol: 6, Pages: 2099-2119
  • Journal article
    Sule MN, Jiang J, Templeton MR, Huth E, Brant J, Bond Tet al., 2013,

    Salt rejection and water flux through a tubular pervaporative polymer membrane designed for irrigation applications

    , Environmental Technology, Vol: 34, Pages: 1329-1339
  • Software
    AMCG, 2013,

    Fluidity/The Imperial College Ocean Model

  • Report
    McIntyre N, Ballard C, Park JS, Henshaw A, Pagella T, Dangerfield S, Ewen J, Bulygina N, Marshall M, Reynolds B, Wheater H, O’Donnell G, Jackson B, O’Connell E, Thorne C, Cluckie I, Sinclair Fet al., 2012,

    Land use management effects on flood flows – guidance on prediction

  • Journal article
    Tong D, Trusler JPM, Maitland GC, Gibbins J, Fennell PSet al., 2012,

    Solubility of carbon dioxide in aqueous solution of monoethanolamine or 2-amino-2-methyl-1-propanol: Experimental measurements and modelling

    , International Journal of Greenhouse Gas Control, Vol: 6, Pages: 37-47

    Despite the importance of the accurate measurement of vapour–liquid equilibria (VLE) data, the reported values, even for well-studied systems such as MEA–H2O–CO2, are scattered. This work centres on the development of an experimental method to measure accurately the VLE of various aqueous amine systems. A static-analytic type of VLE apparatus has been constructed and employed to measure the VLE of CO2 in aqueous monoethanolamine and 2-amino-2-methyl-1-propanol. Gas chromatography was used to analyse the liquid phase compositions. The setup has been validated against literature data for 30 mass% MEA (monoethanolamine) at T = 313 and 393 K and was shown to be capable of generating reliable and repeatable data. New measurements for 30 mass% aqueous AMP (2-amino-2-methyl-1-propanol) solutions are also presented at temperatures between 313 and 393 K and a total pressure range of 23–983 kPa. A quasi-chemical model has been employed to interpret the experimental data for the MEA–H2O–CO2 and AMP–H2O–CO2 systems. The average absolute deviation (ΔAAD) between model prediction and experimental data is within 7%.

  • Journal article
    Bakewell C, Thi-Phuong-Anh C, Long N, Le Goff XF, Auffrant A, Williams CKet al., 2012,

    Yttrium Phosphasalen Initiators for rac-Lactide Polymerization: Excellent Rates and High Iso-Selectivities

    , JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 134, Pages: 20577-20580, ISSN: 0002-7863

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