Simplifying high-order mesh generation for computational scientists

Computational modelling is now tightly integrated into many fields of research in science and industry. Computational fluid dynamics software, for example, gives engineers the ability to model fluid flow around complex geometries defined
in Computer-Aided Design (CAD) packages, without the expense of constructing large wind tunnel experiments. However, such
modelling requires translation from an initial CAD geometry to a mesh of many small elements that modelling software uses
to represent the approximate solution in the numerical method. Generating sufficiently high-quality meshes for simulation is a
time-consuming, iterative and error-prone process that is often complicated by the need to interact with multiple command-line
tools to generate and visualise the mesh data. In this paper we describe our approach to overcoming this complexity through the
addition of a meshing console to Nekkloud, a science gateway for simplifying access to the functionality of the Nektar++ spectral/hp
element framework. The meshing console makes use of the NekMesh tool in Nektar++ to help reduce the complexity of
the mesh generation process. It offers a web-based interface for specifying parameters, undertaking meshing and visualising
results. The meshing console enables Nekkloud to offer support for a full, end-to-end simulation pipeline from initial CAD
geometry to simulation results.