Browsing UiS Brage by Author "Klöfkorn, Robert"
Now showing items 1-7 of 7
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A fast parallel solver for the forward problem in electrical impedance tomography
Jehl, Markus; Dedner, Andreas; Betcke, Timo; Aristovich, Kirill; Klöfkorn, Robert; Holder, David (Journal article; Peer reviewed, 2015-01)Electrical impedance tomography (EIT) is a noninvasive imaging modality, where imperceptible currents are applied to the skin and the resulting surface voltages are measured. It has the potential to distinguish between ... -
Asynchronous communication in spectral-element and discontinuous Galerkin methods for atmospheric dynamics – a case study using the High-Order Methods Modeling Environment (HOMME-homme_dg_branch)
Jamroz, Benjamin F.; Klöfkorn, Robert (Journal article; Peer reviewed, 2016-08)The scalability of computational applications on current and next-generation supercomputers is increasingly limited by the cost of inter-process communication. We implement non-blocking asynchronous communication in the ... -
Efficient Optimization and Robust Value Quantification of Enhanced Oil Recovery Strategies
Oguntola, Micheal Babatunde (PhD thesis UiS;, Doctoral thesis, 2022-06)With an increasing demand for hydrocarbon reservoir produces such as oil, etc., and difficulties in finding green oil fields, the use of Enhanced Oil Recovery (EOR) methods such as polymer, Smart water, and solvent flooding ... -
An Investigation of Second-Order Finite Volume Methods for Field-scale Reservoir Simulation
Kvashchuk, Anna (PhD thesis UiS;, Doctoral thesis, 2024)This thesis focuses on improving the accuracy of numerical simulation of flow in subsurface reservoirs by using second-order finite volume methods. The first-order finite volume method, commonly used in reservoir simulation, ... -
On discontinuous Galerkin approach for atmospheric flow in the mesoscale with and without moisture
Schuster, Dieter; Brdar, Slavko; Baldauf, Michael; Dedner, Andreas; Klöfkorn, Robert; Kröner, Dietmar (Journal article; Peer reviewed, 2014-06)We present and discuss discontinuous Galerkin (DG) schemes for dry and moist atmospheric flows in the mesoscale. We derive terrain-following coordinates on the sphere in strong-conservation form, which makes it possible ... -
A Second-Order Finite Volume Method for Field-Scale Reservoir Simulation
Kvashchuk, Anna; Klöfkorn, Robert; Sandve, Tor Harald (Peer reviewed; Journal article, 2023-08)Subsurface reservoirs are large complex systems. Reservoir flow models are defined on complex grids that follow geology with relatively large block sizes to make consistent simulations feasible. Reservoir engineers rely ... -
The DUNE-ALUGRID Module
Alkämper, Martin; Dedner, Andreas; Klöfkorn, Robert; Nolte, Martin (Journal article; Peer reviewed, 2016-01)In this paper we present the new Dune-ALUGrid module. This module contains a major overhaul of the sources from the ALUGrid library and the bindings to the Dune software framework. The main improvements concern the parallel ...