125 citations · 180 across the 10 of their papers we have counts for
12 papers
Efficient optimization of a regional water elevation model with an automatically generated adjoint
Tuomas Kärnä, Joseph G. Wallwork, Stephan C. Kramer
Calibration of unknown model parameters is a common task in many ocean model applications. We present an adjoint-based optimization of an unstructured mesh shallow water model for…
An investigation into the accuracy of the depth-averaging used in tidal turbine array optimisation
Mohammad Amin Abolghasemi, Matthew D. Piggott, Stephan C. Kramer
Depth-averaged shallow water models are widely used for the large-scale simulation of tidal turbine arrays. The relatively low computational complexity of this approach allows for…
Thetis coastal ocean model: discontinuous Galerkin discretization for the three-dimensional hydrostatic equations
Tuomas Kärnä, Stephan C. Kramer, Lawrence Mitchell +3
Unstructured grid ocean models are advantageous for simulating the coastal ocean and river-estuary-plume systems. However, unstructured grid models tend to be diffusive and/or comp…
Relaxation of photoexcitations in polaron-induced magnetic microstructures
Thomas Köhler, Sangeeta Rajpurohit, Ole Schumann +7
We investigate the evolution of a photoexcitation in correlated materials over a wide range of time scales. The system studied is a one-dimensional model of a manganite with correl…
On the validity of tidal turbine array configurations obtained from steady-state adjoint optimisation
Christian T. Jacobs, Matthew D. Piggott, Stephan C. Kramer +1
Extracting the optimal amount of power from an array of tidal turbines requires an intricate understanding of tidal dynamics and the effects of turbine placement on the local and r…
Design optimisation and resource assessment for tidal-stream renewable energy farms using a new continuous turbine approach
Simon W. Funke, Stephan C. Kramer, Matthew D. Piggott
This paper presents a new approach for optimising the design of tidal stream turbine farms. In this approach, the turbine farm is represented by a turbine density function that spe…