TY  - JOUR
A1  - Keller, Johannes
A1  - Rath, Volker
A1  - Bruckmann, Johanna
A1  - Mottaghy, Darius
A1  - Clauser, Christoph
A1  - Wolf, Andreas
A1  - Seidler, Ralf
A1  - Bücker, H. Martin
A1  - Klitzsch, Norbert
T1  - SHEMAT-Suite: An open-source code for simulating flow, heat and species transport in porous media
JF  - SoftwareX
N2  - SHEMAT-Suite is a finite-difference open-source code for simulating coupled flow, heat and species transport in porous media. The code, written in Fortran-95, originates from geoscientific research in the fields of geothermics and hydrogeology. It comprises: (1) a versatile handling of input and output, (2) a modular framework for subsurface parameter modeling, (3) a multi-level OpenMP parallelization, (4) parameter estimation and data assimilation by stochastic approaches (Monte Carlo, Ensemble Kalman filter) and by deterministic Bayesian approaches based on automatic differentiation for calculating exact (truncation error-free) derivatives of the forward code.
Y1  - 2020
U6  - https://doi.org/10.1016/j.softx.2020.100533
SN  - 2352-7110
VL  - 12
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Nobis, Moritz
A1  - Schmitt, Carlo
A1  - Schemm, Ralf
A1  - Schnettler, Armin
T1  - Pan-European CVAR-constrained stochastic unit commitment in day-ahead and intraday electricity markets
JF  - Energies
N2  - The fundamental modeling of energy systems through individual unit commitment decisions is crucial for energy system planning. However, current large-scale models are not capable of including uncertainties or even risk-averse behavior arising from forecasting errors of variable renewable energies. However, risks associated with uncertain forecasting errors have become increasingly relevant within the process of decarbonization. The intraday market serves to compensate for these forecasting errors. Thus, the uncertainty of forecasting errors results in uncertain intraday prices and quantities. Therefore, this paper proposes a two-stage risk-constrained stochastic optimization approach to fundamentally model unit commitment decisions facing an uncertain intraday market. By the nesting of Lagrangian relaxation and an extended Benders decomposition, this model can be applied to large-scale, e.g., pan-European, power systems. The approach is applied to scenarios for 2023—considering a full nuclear phase-out in Germany—and 2035—considering a full coal phase-out in Germany. First, the influence of the risk factors is evaluated. Furthermore, an evaluation of the market prices shows an increase in price levels as well as an increasing day-ahead-intraday spread in 2023 and in 2035. Finally, it is shown that intraday cross-border trading has a significant influence on trading volumes and prices and ensures a more efficient allocation of resources.
Y1  - 2020
U6  - https://doi.org/10.3390/en13092339
SN  - 1996-1073
N1  - Special Issue Uncertainties and Risk Management in Competitive Energy Markets
VL  - 13
IS  - Art. 2339
SP  - 1
EP  - 35
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Dellmann, Sophia Florence
A1  - Glorius, J.
A1  - Litvinov, Yu A.
A1  - Reifarth, R.
A1  - Al-Khasawneh, Kafa
A1  - Aliotta, M.
A1  - Bott, L.
A1  - Brückner, Benjamin
A1  - Bruno, C. G.
A1  - Chen, Ruijiu
A1  - Davinson, T.
A1  - Dickel, T.
A1  - Dillmann, Iris
A1  - Dmytriev, D.
A1  - Erbacher, P.
A1  - Freire-Fernández, D.
A1  - Forstner, Oliver
A1  - Geissel, H.
A1  - Göbel, K.
A1  - Griffin, Christopher J.
A1  - Grisenti, R.
A1  - Gumberidze, Alexandre
A1  - Haettner, Emma
A1  - Hagmann, Siegbert
A1  - Heil, M.
A1  - Heß, R.
A1  - Hillenbrand, P.-M.
A1  - Joseph, R.
A1  - Jurado, B.
A1  - Kozhuharov, Christophor
A1  - Kulikov, I.
A1  - Löher, Bastian
A1  - Langer, Christoph
A1  - Leckenby, Guy
A1  - Lederer-Woods, C.
A1  - Lestinsky, M.
A1  - Litvinov, S. A.
A1  - Lorenz, B. A.
A1  - Lorenz, E.
A1  - Marsh, J.
A1  - Menz, Esther Babette
A1  - Morgenroth, T.
A1  - Petridis, N.
A1  - Pibernat, Jerome
A1  - Popp, U.
A1  - Psaltis, Athanasios
A1  - Sanjari, Shahab
A1  - Scheidenberger, C.
A1  - Sguazzin, M.
A1  - Sidhu, Ragandeep Singh
A1  - Spillmann, Uwe
A1  - Steck, M.
A1  - Stöhlker, T.
A1  - Surzhykov, A.
A1  - Swartz, J. A.
A1  - Törnqvist, H.
A1  - Varga, L.
A1  - Vescovi, Diego
A1  - Weick, H.
A1  - Weigand, M.
A1  - Woods, P.
A1  - Xing, Y.
A1  - Yamaguchi, Taiyo
T1  - Proton capture on stored radioactive ¹¹⁸Te ions
JF  - EPJ Web of Conferences
N2  - Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the ¹¹⁸Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped ¹¹⁸Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.
Y1  - 2023
U6  - https://doi.org/10.1051/epjconf/202327911018
SN  - 2100-014X
N1  - Volume 279, 2023. Nuclear Physics in Astrophysics – X (NPA-X 2022).
VL  - 279
IS  - Article Number: 11018
SP  - 1
EP  - 5
PB  - EDP Sciences
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Advances in solar tower technology
JF  - Wiley interdisciplinary reviews : Energy and Environment : WIREs
Y1  - 2017
U6  - https://doi.org/10.1002/wene.217
SN  - 2041-840X
VL  - 6
IS  - 1
SP  - 1
EP  - 19
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Ille, F.
A1  - Schramm, S.
A1  - Adam, M.
A1  - Backes, K.
A1  - Faber, Christian
A1  - Anthrakidis, Anette
T1  - Kraft-Wärme-Kälte-Kopplung im Leistungsbereich von 10 kW mit periodisch arbeitender Sorptionsmaschine
JF  - VDI-Tage der Gebäudetechnik 2008 : Tagung Dortmund, 28. und 29. Mai 2008 / VDI-Gesellschaft Technische Gebäudeausrüstung
Y1  - 2008
SN  - 978-3-18-092043-6
N1  - VDI-Berichte ; 2043 ; 2. VDI-Tage der Gebäudetechnik 2008, VDI-Gesellschaft Technische Gebäudeausrüstung (VDI-TGA), Dortmund, DE, 28.-29. Mai, 2008
SP  - 103
EP  - 116
PB  - VDI-Verl.
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Breitbach, Gerd
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, P.
T1  - Computational fluid flow of porous resic ceramic filtering modules and optimization of the channel edge form geometry
JF  - Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2
Y1  - 2008
N1  - Verein Deutscher Ingenieure ; World Filtration Congress ; (10 : ; 2008.04.14-18 : ; Leipzig) ; WFC ; (10 : ; 2008.04.14-18 : ; Leipzig)
SP  - 300
EP  - 304
PB  - Filtech Exhibitions
CY  - Meerbusch
ER  - 
TY  - JOUR
A1  - Verschitz, Daniel
A1  - Butenweg, Christoph
T1  - Standsicherheitsnachweis von Behältern für Kleinkläranlagen
JF  - ACWA aktuell
N2  - Die PIA GmbH prüft seit fast 8 Jahren die Standsicherheit von Behältern für Kleinkläranlagen. Diese bestehen in der Regel aus Kunststoff oder Beton und müssen über ihre gesamte Lebensdauer den Beanspruchungen aus Handhabung, Einbau und Betrieb standhalten. Die Standsicherheit kann nach EN 12566 wahlweise durch einen rechnerischen Nachweis oder durch einen praktischen Nachweis wie die Bruchlastprüfung oder die Prüfung in der Grube erfolgen.
Y1  - 2014
IS  - 12 - 9/2014
SP  - 10
PB  - RWTH Aachen
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Mykoniou, Konstantin
A1  - Butenweg, Christoph
A1  - Holtschoppen, Britta
A1  - Klinkel, Sven
T1  - Seismic response analysis of adjacent liquid-storage tanks
JF  - Earthquake engineering and structural dynamics
N2  - A refined substructure technique in the frequency domain is developed, which permits consideration of the interaction effects among adjacent containers through the supporting deformable soil medium. The tank-liquid systems are represented by means of mechanical models, whereas discrete springs and dashpots stand for the soil beneath the foundations. The proposed model is employed to assess the responses of adjacent circular, cylindrical tanks for harmonic and seismic excitations over wide range of tank proportions and soil conditions. The influence of the number, spatial arrangement of the containers and their distance on the overall system's behavior is addressed. The results indicate that the cross-interaction effects can substantially alter the impulsive components of response of each individual element in a tank farm. The degree of this impact is primarily controlled by the tank proportions and the proximity of the predominant natural frequencies of the shell-liquid-soil systems and the input seismic motion. The group effects should be not a priori disregarded, unless the tanks are founded on shallow soil deposit overlying very stiff material or bedrock.
KW  - liquid-structure interaction
KW  - seismic response
KW  - impulsive effects
KW  - liquid-storage tank
KW  - structure-soil-structure interaction
Y1  - 2016
U6  - https://doi.org/10.1002/eqe.2726
SN  - 1096-9845 (E-Journal); 0098-8847 (Print)
VL  - 45
IS  - 11
SP  - 1779
EP  - 1796
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Taddei, Francesca
A1  - Butenweg, Christoph
A1  - Klinkel, S.
T1  - Parametric investigation of the soil-structure interaction effects on the dynamic behaviour of a shallow foundation supported wind turbine considering a layered soil
JF  - Wind energy : an international journal for progress and applications in wind power conversion technology
Y1  - 2015
U6  - https://doi.org/10.1002/we.1703
SN  - 1099-1824 (E-Journal); 1095-4244 (Print)
VL  - Volume 18
IS  - Issue 3
SP  - 399
EP  - 417
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Altay, Okyay
A1  - Butenweg, Christoph
A1  - Taddei, Francesca
T1  - Effektivität von Schwingungsdämpfern bei Windenergieanlagen
JF  - Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik. Beilage: D-A-CH-Mitteilungsblatt
Y1  - 2013
SN  - 1436-4867 (E-Journal); 0005-6650 (Print)
N1  - Printausgabe in der Bibliothek Bayernallee vorhanden: 13 Z 049-2013
VL  - Band 88
IS  - Heft 10
SP  - S11
EP  - S17
PB  - VDI Fachmedien
CY  - Düsseldorf
ER  -