145 citations · 492 across the 20 of their papers we have counts for
20 papers
Open-source Framework for Transonic Boundary Layer Natural Transition Analysis over Complex Geometries in Nektar++
Ganlin Lyu, Chao Chen, Xi Du +2
We introduce an open-source and unified framework for transition analysis for laminar boundary layer natural transition at transonic conditions and over complex geometries, where s…
Stable, entropy-pressure compatible subsonic Riemann boundary condition for embedded DG compressible flow simulations
Ganlin Lyu, Chao Chen, Xi Du +1
One approach to reduce the cost to simulate transitional compressible boundary layer flow is to adopt a near body reduced domain with boundary conditions enforced to be compatible…
Industry-Relevant Implicit Large-Eddy Simulation of a High-Performance Road Car via Spectral/hp Element Methods
Gianmarco Mengaldo, David Moxey, Michael Turner +5
We present a successful deployment of high-fidelity Large-Eddy Simulation (LES) technologies based on spectral/hp element methods to industrial flow problems, which are characteriz…
Nektar++: Design and implementation of an implicit, spectral/ element, compressible flow solver using a Jacobian-free Newton Krylov approach
Zhen-Guo Yan, Yu Pan, Giacomo Castiglioni +4
At high Reynolds numbers, the use of explicit in time compressible flow simulations with spectral/ element discretization can become significantly limited by time step. To alle…
Computational study on an Ahmed Body equipped with simplified underbody diffuser
Filipe F. Buscariolo, Gustavo R. S. Assi, Spencer J. Sherwin
The Ahmed body is one of the most studied 3D bluff bodies used for automotive research and was first proposed by Ahmed in 1984. The variation of the slant angle of the rear upper s…
Naturally curved quadrilateral mesh generation using an adaptive spectral element solver
Julian Marcon, David A. Kopriva, Spencer J. Sherwin +1
We describe an adaptive version of a method for generating valid naturally curved quadrilateral meshes. The method uses a guiding field, derived from the concept of a cross field,…
Spectral/hp element simulation of flow past a Formula One front wing: validation against experiments
Filipe F. Buscariolo, Julien Hoessler, David Moxey +6
Emerging commercial and academic tools are regularly being applied to the design of road and race cars, but there currently are no well-established benchmark cases to study the aer…
-adaptation for compressible flows
Julian Marcon, Giacomo Castiglioni, David Moxey +2
We present an -adaptation strategy for high-fidelity simulation of compressible inviscid flows with shocks. The mesh resolution in regions of flow discontinuities is increased…
Numerical study on the effect of geometric approximation error in the numerical solution of PDEs using a high-order curvilinear mesh
Sehun Chun, Julian Marcon, Joaquim Peiro +1
When time-dependent partial differential equations (PDEs) are solved numerically in a domain with curved boundary or on a curved surface, mesh error and geometric approximation err…
Nektar++: enhancing the capability and application of high-fidelity spectral/ element methods
David Moxey, Chris D. Cantwell, Yan Bao +14
Nektar++ is an open-source framework that provides a flexible, high-performance and scalable platform for the development of solvers for partial differential equations using the hi…
A variational approach to high-order r-adaptation
Julian Marcon, Michael Turner, David Moxey +2
A variational framework, initially developed for high-order mesh optimisation, is being extended for r-adaptation. The method is based on the minimisation of a functional of the me…
A High Resolution PDE Approach to Quadrilateral Mesh Generation
Julian Marcon, David A. Kopriva, Spencer J. Sherwin +1
We describe a high order technique to generate quadrilateral decompositions and meshes for complex two dimensional domains using spectral elements in a field guided procedure. Insp…
Combined CG-HDG Method for Elliptic Problems: Performance Model
Martin Vymazal, David Moxey, Chris Cantwell +2
We combine continuous and discontinuous Galerkin methods in the setting of a model diffusion problem. Starting from a hybrid discontinuous formulation, we replace element interiors…
Spectral/hp element methods: recent developments, applications, and perspectives
Hui Xu, Chris D. Cantwell, Carlos Monteserin +3
The spectral/hp element method combines the geometric flexibility of the classical h-type finite element technique with the desirable numerical properties of spectral methods, empl…
A comparative study on polynomial dealiasing and split form discontinuous Galerkin schemes for under-resolved turbulence computations
Andrew R. Winters, Rodrigo C. Moura, Gianmarco Mengaldo +4
This work focuses on the accuracy and stability of high-order nodal discontinuous Galerkin (DG) methods for under-resolved turbulence computations. In particular we consider the in…
Implicit Large Eddy Simulation of a wingtip vortex at
Jean-Eloi W. Lombard, David Moxey, Julien F. A. Hoessler +3
In this article we present recent developments in numerical methods for performing a Large Eddy Simulation (LES) of the formation and evolution of a wingtip vortex. The development…
Influence of localised smooth steps on the instability of a boundary layer
Hui Xu, Jean-Eloi W. Lombard, Spencer J. Sherwin
We consider a smooth forward facing step defined by the Gauss error function of height 4-30\% and four times the width of the local boundary layer thickness . The boundary…
An adaptive selective frequency damping method
Bastien E. Jordi, Colin J. Cotter, Spencer J. Sherwin
The selective frequency damping (SFD) method is an alternative to classical Newton's method to obtain unstable steady-state solutions of dynamical systems. However this method has…
Encapsulated formulation of the Selective Frequency Damping method
Bastien E. Jordi, C. J. Cotter, Spencer J. Sherwin
We present an alternative "encapsulated" formulation of the Selective Frequency Damping method for finding unstable equilibria of dynamical systems, which is particularly useful wh…
Simplifying the Development, Use and Sustainability of HPC Software
Jeremy Cohen, Chris Cantwell, Neil Chue Hong +5
Developing software to undertake complex, compute-intensive scientific processes requires a challenging combination of both specialist domain knowledge and software development ski…