Imperial College London


Faculty of EngineeringDepartment of Aeronautics

Professor of Computational Fluid Mechanics



+44 (0)20 7594 5052s.sherwin Website




313BCity and Guilds BuildingSouth Kensington Campus






BibTex format

author = {Moxey, D and Cantwell, CD and Bao, Y and Cassinelli, A and Castiglioni, G and Chun, S and Juda, E and Kazemi, E and Lackhove, K and Marcon, J and Mengaldo, G and Serson, D and Turner, M and Xu, H and Peiró, J and Kirby, RM and Sherwin, SJ},
doi = {10.1016/j.cpc.2019.107110},
journal = {Computer Physics Communications},
title = {Nektar++: Enhancing the capability and application of high-fidelity spectral/hp element methods},
url = {},
year = {2020}

RIS format (EndNote, RefMan)

AB - Nektar++ is an open-source framework that provides a flexible, performant and scalable platform for the development of solvers for partial differential equations using the high-order spectral/hp element method. In particular, Nektar++ aims to overcome the complex implementation challenges that are often associated with high-order methods, thereby allowing them to be more readily used in a wide range of application areas. In this paper, we present the algorithmic, implementation and application developments associated with our Nektar++ version 5.0 release. We describe some of the key software and performance developments, including our strategies on parallel I/O, on in-situ processing, the use of collective operations for exploiting current andemerging hardware, and interfaces to enable multi-solver coupling. Furthermore, we provide details on a newly developed Python interface that enable more rapid on-boarding of new users unfamiliar with spectral/$hp$ element methods, C++ and/or Nektar++. This release also incorporates a number of numerical method developments - in particular: the method of moving frames, which provides an additional approach for the simulation of equations on embedded curvilinear manifolds and domains; a means of handling spatially variable polynomial order; and a novel technique for quasi-3D simulations to permit spatially-varying perturbations to the geometry in the homogeneous direction. Finally, we demonstrate the new application-level features provided in this release, namely: a facility for generating high-order curvilinear meshes called NekMesh; a novel new AcousticSolver for aeroacoustic problems; our development of a 'thick' strip model for the modelling of fluid-structure interaction problems in the context of vortex-induced vibrations. We conclude by commenting some directions for future code development and expansion.
AU - Moxey,D
AU - Cantwell,CD
AU - Bao,Y
AU - Cassinelli,A
AU - Castiglioni,G
AU - Chun,S
AU - Juda,E
AU - Kazemi,E
AU - Lackhove,K
AU - Marcon,J
AU - Mengaldo,G
AU - Serson,D
AU - Turner,M
AU - Xu,H
AU - Peiró,J
AU - Kirby,RM
AU - Sherwin,SJ
DO - 10.1016/j.cpc.2019.107110
PY - 2020///
SN - 0010-4655
TI - Nektar++: Enhancing the capability and application of high-fidelity spectral/hp element methods
T2 - Computer Physics Communications
UR -
UR -
UR -
ER -