Imperial College London

Dr Andrew Buchan

Faculty of EngineeringDepartment of Earth Science & Engineering

Honorary Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 7325andrew.buchan

 
 
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Location

 

4.91Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

37 results found

Buchan AG, Pain CC, 2016, An efficient space-angle subgrid scale discretisation of the neutron transport equation, ANNALS OF NUCLEAR ENERGY, Vol: 94, Pages: 440-450, ISSN: 0306-4549

JOURNAL ARTICLE

Heaney CE, Buchan AG, Pain CC, Jewer Set al., A reduced order model for criticality problems in reactor physics varyingcontrol rod settings, Proceedings of the 24 th UK Conference of the Association for Computational Mechanics in Engineering

CONFERENCE PAPER

Adam A, Buchan AG, Piggott MD, Pain CC, Hill J, Goffin MAet al., 2016, Adaptive Haar wavelets for the angular discretisation of spectral wave models, JOURNAL OF COMPUTATIONAL PHYSICS, Vol: 305, Pages: 521-538, ISSN: 0021-9991

JOURNAL ARTICLE

Dargaville S, Goffin MA, Buchan AG, Pain CC, Smedley-Stevenson RP, Smith PN, Gorman Get al., 2015, Solving the Boltzmann transport equation with multigrid and adaptive space/angle discretisations, ANNALS OF NUCLEAR ENERGY, Vol: 86, Pages: 99-107, ISSN: 0306-4549

JOURNAL ARTICLE

Buchan AG, Calloo AA, Goffin MG, Dargaville S, Fang F, Pain CC, Navon IMet al., 2015, A POD reduced order model for resolving angular direction in neutron/photon transport problems, JOURNAL OF COMPUTATIONAL PHYSICS, Vol: 296, Pages: 138-157, ISSN: 0021-9991

JOURNAL ARTICLE

Xiao D, Fang F, Buchan AG, Pain CC, Navon IM, Muggeridge Aet al., 2015, Non-intrusive reduced order modelling of the Navier-Stokes equations, COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, Vol: 293, Pages: 522-541, ISSN: 0045-7825

JOURNAL ARTICLE

Goffin MA, Buchan AG, Dargaville S, Pain CC, Smith PN, Smedley-Stevenson RPet al., 2015, Goal-based angular adaptivity applied to a wavelet-based discretisation of the neutral particle transport equation, JOURNAL OF COMPUTATIONAL PHYSICS, Vol: 281, Pages: 1032-1062, ISSN: 0021-9991

JOURNAL ARTICLE

Buchan AG, Jewer S, Farrell PE, Pain CC, Cacuci DG, Moatamedi Met al., 2014, Simulating coupled neutron-fluid-heat transfer for the study of unintended operatingscenarios in pressure water reactors using an immersed body modelling technique, NAFEMS

CONFERENCE PAPER

Goffin MA, Buchan AG, Belme AC, Pain CC, Eaton MD, Smith PN, Smedley-Stevenson RPet al., 2014, Goal-based angular adaptivity applied to the spherical harmonics discretisation of the neutral particle transport equation, ANNALS OF NUCLEAR ENERGY, Vol: 71, Pages: 60-80, ISSN: 0306-4549

JOURNAL ARTICLE

Merton SR, Smedley-Stevenson RP, Pain CC, Buchan AGet al., 2014, Adjoint eigenvalue correction for elliptic and hyperbolic neutron transport problems, PROGRESS IN NUCLEAR ENERGY, Vol: 76, Pages: 1-16, ISSN: 0149-1970

JOURNAL ARTICLE

Jewer S, Buchan AG, Pain CC, Cacuci DGet al., 2014, An immersed body method for coupled neutron transport and thermal hydraulic simulations of PWR assemblies, ANNALS OF NUCLEAR ENERGY, Vol: 68, Pages: 124-135, ISSN: 0306-4549

JOURNAL ARTICLE

Xiao D, Fang F, Buchan AG, Pain CC, Navon IM, Du J, Hu Get al., 2014, Non-linear model reduction for the Navier-Stokes equations using residual DEIM method, JOURNAL OF COMPUTATIONAL PHYSICS, Vol: 263, Pages: 1-18, ISSN: 0021-9991

JOURNAL ARTICLE

Buchan AG, Farrell PE, Gorman GJ, Goddard AJH, Eaton MD, Nygaard ET, Angelo PL, Smedley-Stevenson RP, Merton SR, Smith PNet al., 2014, The immersed body supermeshing method for modelling reactor physics problems with complex internal structures, ANNALS OF NUCLEAR ENERGY, Vol: 63, Pages: 399-408, ISSN: 0306-4549

JOURNAL ARTICLE

Ardjmandpour N, Pain CC, Fang F, Buchan AG, Singer J, Player MA, Xu X, Navon IM, Carter Jet al., 2014, Reduced order borehole induction modelling, INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS, Vol: 28, Pages: 140-157, ISSN: 1061-8562

JOURNAL ARTICLE

Buchan AG, Pain CC, Fang F, Navon IMet al., 2013, A POD reduced-order model for eigenvalue problems with application to reactor physics, INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, Vol: 95, Pages: 1011-1032, ISSN: 0029-5981

JOURNAL ARTICLE

Goffin MA, Baker CMJ, Buchan AG, Pain CC, Eaton MD, Smith PNet al., 2013, Minimising the error in eigenvalue calculations involving the Boltzmann transport equation using goal-based adaptivity on unstructured meshes, JOURNAL OF COMPUTATIONAL PHYSICS, Vol: 242, Pages: 726-752, ISSN: 0021-9991

JOURNAL ARTICLE

Baker CMJ, Buchan AG, Pain CC, Tollit BS, Goffin MA, Merton SR, Warner Pet al., 2013, Goal based mesh adaptivity for fixed source radiation transport calculations, ANNALS OF NUCLEAR ENERGY, Vol: 55, Pages: 169-183, ISSN: 0306-4549

JOURNAL ARTICLE

Merton SR, Buchan AG, Pain CC, Smedley-Stevenson RPet al., 2013, An adjoint-based method for improving computational estimates of a functional obtained from the solution of the Boltzmann Transport Equation, ANNALS OF NUCLEAR ENERGY, Vol: 54, Pages: 1-10, ISSN: 0306-4549

JOURNAL ARTICLE

Xiao D, Fang F, Du J, Pain CC, Navon IM, Buchan AG, ElSheikh AH, Hu Get al., 2013, Non-linear Petrov-Galerkin methods for reduced order modelling of the Navier-Stokes equations using a mixed finite element pair, COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, Vol: 255, Pages: 147-157, ISSN: 0045-7825

JOURNAL ARTICLE

Buchan AG, Pain CC, Tollit BS, Gomes JLMA, Eaton MD, Gorman GJ, Cooling CM, Goddard AJH, Nygaard ET, Angelo PL, Smith PNet al., 2013, Simulated spatially dependent transient kinetics analysis of the Oak Ridge Y12 plant criticality excursion, PROGRESS IN NUCLEAR ENERGY, Vol: 63, Pages: 12-21, ISSN: 0149-1970

JOURNAL ARTICLE

Baker CMJ, Buchan AG, Pain CC, Farrell PE, Eaton MD, Warner Pet al., 2013, Multimesh anisotropic adaptivity for the Boltzmann transport equation, ANNALS OF NUCLEAR ENERGY, Vol: 53, Pages: 411-426, ISSN: 0306-4549

JOURNAL ARTICLE

Nygaard ET, Pain CC, Eaton MD, Gomes JLMA, Goddard AJH, Gorman G, Tollit B, Buchan AG, Cooling CM, Angelo PLet al., 2012, Steps towards verification and validation of the Fetch code for Level 2 analysis, design, and optimization of aqueous homogeneous reactors, Pages: 3264-3274

Babcock and Wilcox Technical Services Group (B&W) has identified aqueous homogeneous reactors (AHRs) as a technology well suited to produce the medical isotope molybdenum 99 (Mo99). AHRs have never been specifically designed or built for this specialized purpose. However, AHRs have a proven history of being safe research reactors. In fact, in 1958, AHRs had "a longer history of operation than any other type of research reactor using enriched fuel" and had "experimentally demonstrated to be among the safest of all various type of research reactor now in use [1]." While AHRs have been modeled effectively using simplified "Level 1" tools, the complex interactions between fluids, neutronics, and solid structures are important (but not necessarily safety significant). These interactions require a "Level 2" modeling tool. Imperial College London (ICL) has developed such a tool: Finite Element Transient Criticality (FETCH). FETCH couples the radiation transport code EVENT with the computational fluid dynamics code (Fluidity), the result is a code capable of modeling sub-critical, critical, and super-critical solutions in both two-and three-dimensions. Using FETCH, ICL researchers and B&W engineers have studied many fissioning solution systems include the Tokimura criticality accident, the Y12 accident, SILENE, TRACY, and SUPO. These modeling efforts will ultimately be incorporated into FETCH'S extensive automated verification and validation (V&V) test suite expanding FETCH'S area of applicability to include all relevant physics associated with AHRs. These efforts parallel B&W's engineering effort to design and optimize an AHR to produce Mo99.

CONFERENCE PAPER

Buchan AG, Pain CC, Umpleby AP, Smedley-Stevenson RPet al., 2012, A sub-grid scale finite element agglomeration multigrid method with application to the Boltzmann transport equation, INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, Vol: 92, Pages: 318-342, ISSN: 0029-5981

JOURNAL ARTICLE

Buchan AG, Pain CC, Goddard AJH, Eaton MD, Gomes JLMA, Gorman GJ, Cooling CM, Tollit BS, Nygaard ET, Glenn DE, Angelo PLet al., 2012, Simulated transient dynamics and heat transfer characteristics of the water boiler nuclear reactor - SUPO - with cooling coil heat extraction, ANNALS OF NUCLEAR ENERGY, Vol: 48, Pages: 68-83, ISSN: 0306-4549

JOURNAL ARTICLE

Baker CMJ, Buchan AG, Pain CC, Tollit B, Eaton MD, Warner Pet al., 2012, Quadratic inner element subgrid scale discretisation of the Boltzmann transport equation, ANNALS OF NUCLEAR ENERGY, Vol: 45, Pages: 124-137, ISSN: 0306-4549

JOURNAL ARTICLE

Buchan AG, Pain CC, Eaton MD, Gomes JLMA, Gorman GJ, Cooling CM, Goddard AJH, Nygaard ET, Glenn DE, Angelo PLet al., 2011, Dynamics and heat transfer characteristics of the water boiler reactor - SUPO, International Conference in Nuclear Criticality

CONFERENCE PAPER

Buchan AG, Pain CC, Eaton MD, Gomes JLMA, Gorman GJ, Cooling CM, Goddard AJH, Nygaard ET, Glenn DE, Angelo PNet al., 2011, Simulated spatially dependent transient kinetics analysis of the oak ridge Y12 Plant criticality excursion, International Conference in Nuclear Criticality, International Conference in Nuclear Criticality

CONFERENCE PAPER

Baker CMJ, Buchan AG, Pain CC, Tollit B, Goffin MA, Eaton MD, Merton SR, Smedley Stevenson PN, Warner Pet al., 2011, Anisotropic mesh adaptivity for eigenvalue calculations using energy dependent meshes, International Conference in Nuclear Criticalit

CONFERENCE PAPER

Merton SR, Smedley-Stevenson RP, Pain CC, ElSheikh AH, Buchan AGet al., 2011, An Adjoint Based Scheme for Eigenvalue Error Improvement, International Conference on Mathematics, Computational Methods & Reactor Physics

CONFERENCE PAPER

Buchan AG, Merton SR, Pain CC, Smedley-Stevenson RPet al., 2011, Riemann boundary conditions for the Boltzmann transport equation using arbitrary angular approximations, ANNALS OF NUCLEAR ENERGY, Vol: 38, Pages: 1186-1195, ISSN: 0306-4549

JOURNAL ARTICLE

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