Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.egypro.2015.07.317
Title (Primary) A parallel FEM scheme for the simulation of large scale thermochemical energy storage with complex geometries using PETSc routines
Author Wang, W. ORCID logo ; Kolditz, O. ORCID logo ; Nagel, T.
Journal Energy Procedia
Year 2015
Department ENVINF
Volume 75
Page From 2080
Page To 2086
Language englisch
Keywords Parallel finite element method; PETSc; thermal energy storage; reactive transport; porous media; OpenGeoSys
UFZ wide themes RU5;
UFZ inventory Clean, Efficient and Affordable Energy for a Sustainable Future: The 7th International Conference on Applied Energy (ICAE2015)
Abstract Thermal energy storage technologies are of current interest in order to improve the integration of renewable energy sources as well as energy efficiency. Numerical simulations of thermochemical heat storage are especially challenging and time consuming due to the complexity of the mathematical description of the strongly coupled and highly nonlinear processes characteristic for such systems. These difficulties are exacerbated once practically relevant complex or large geometries are considered as they can occur around heat exchangers or due to internal heterogeneities of the reactive bed. To allow a computationally efficient simulation of such applications, an existing finite element implementation of a thermochemical heat storage model was parallelised using PETSc routines. Input/output, global assembly and the linear solver all work in a distributed fashion. The approach is implemented into the open source framework OpenGeoSys. The performance of the present parallelisation approach is tested by simulating the discharge of a heat store based on calcium-oxide and water as a benchmark problem. The computational time required for the simulation could be reduced significantly.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=16481
Wang, W., Kolditz, O., Nagel, T. (2015):
A parallel FEM scheme for the simulation of large scale thermochemical energy storage with complex geometries using PETSc routines
Energy Procedia 75 , 2080 - 2086