Helmholtz Institute Freiberg for Resource Technology
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1328 research outputs found
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Data publication: Coherent control of Floquet-engineered magnon frequency combs
No full textThis data publication contains the data for the paper "Coherent Control of Floquet-Engineered Magnon Frequency Combs." It is organized by figures, and each subdirectory contains the data corresponding to its respective figure
Data publication: Direct free energy calculation from ab initio path integral Monte Carlo simulations of warm dense matter
No full textThis repository contains the raw data of all figures shown in the publication "Direct free energy calculation from ab initio path integral Monte Carlo simulations of warm dense matter"; note that the same format and units like in the paper are being used
METABOLATOR: Analysis of Microcalorimetric Metabolic Data Using Monod's Equation
No full textCurve fitting automation for metabolic load of bacteria in solutions
Data publication: Scalable Machine Learning Model for Energy Decomposition Analysis in Aqueous Systems
No full textYou can find the Python scripts we developed to train a neural network model to predict the electron delocalization energies of water molecules here. The training datasets are not included but can be provided upon reasonable request
Data publication: Determining decoating efficiency for mechanically stressed catalyst coated membranes of proton exchange membrane water electrolysers
No full textQuantification maps from uXRF elemental analysis for water electrolyses membranes. Elements quantified: Iridium, Platinum, Sulfur. Grey-scaled images
Data publication: Let's get cyclic – Influence of Head-to-Tail Cyclisation of Lanmodulin-inspired peptides on the Lanthanide Affinity and Structure
No full textThe dataset comprises the experimental data that form the basis of the conclusions presented in the paper, including spectroscopic, calorimetric, and microscopic data. This repository will become openly accessible upon publication of the manuscript. Until then, please contact the author, Björn Drobot
Multiphase Python Repository by HZDR
No full textThe python package provides several routines and scripts required to operate the code and cases repositories containing additional code and set-ups for the open-source software released by the OpenFOAM Foundation. This includes among others utilities for pre- and post-processing of simulation cases, utilities to launch virtual environments containing the source code, and utilities to operate the continuous integration and continuous development environment in a self-hosted Gitlab instance
Data publication: Investigation of Two-Phase Critical Flow Phenomena during a Large-Break LOCA in a German PWR with the System Code ATHLET
No full textThis manuscript presents the study of a large-break loss-of-coolant accident (LB-LOCA) sequence with the thermal-hydraulic system code ATHLET applied to a four-loop German pressurized water reactor (PWR) model. The investigation focuses predominantly on two-phase critical flow (TPCF) phenomena emerging under reactor blowdown. The safety implications of occurrence of critical flow conditions in nozzle-like constrictions along the discharge path, namely the main coolant pump (MCP) impeller, are evaluated based on discharge flow partition, primary system depressurization, global coolant circulation pattern, and ultimately the key safety parameter of peak cladding temperature (PCT). Critical flow is represented with the 1D thermal non-equilibrium model CDR1D incorporated in ATHLET. The simulation results show the development of a depressurization cascade along the affected loop during reactor blowdown, which is triggered by the MCP impeller constriction, with consecutive formation of multiple critical flow conditions after the two-phase front propagates through the coolant circuit. The flow limiting condition shifts from the break towards the MCP impeller casing due to its smaller cross-section area (CSA). Critical flow conditions persist furthermore at both break stubs simultaneously. The negative core spatial pressure gradient imposed by the shorter discharge path towards the vessel-side break stub favors top-bottom cooling mode during blowdown. Choking is likewise attained at the pressurizer surge line inlet nozzle and hot leg bypass in the affected loop. A set of parametric runs shows that variation of the MCP impeller constriction leads to re-partitions of mass flow rates between both discharge paths. Enlargement of the constriction diameter increases overall discharged mass causing a faster primary system depressurization and affects the spatial pressure gradient along the core channels, thereby shifting the stagnation point downwards. This behavior enhances core cooling resulting in a lower PCT during reactor blowdown compared to the as-built case. An additional parametric study with the empirical equilibrium model Moody shows re-partition of discharge flows based on the upstream thermodynamic conditions, which alter coolant circulation through the primary circuit and therefore the cladding temperature. The effects are stronger during vessel refill leading to a significantly lower re-flood peak and earlier termination of the temperature excursion
Toward using collective x-ray Thomson scattering to study C–H demixing and hydrogen metallization in warm dense matter conditions
No full textDataset archeiv
Multiphase Python Repository by HZDR
No full textThe python package provides several routines and scripts required to operate the code and cases repositories containing additional code and set-ups for the open-source software released by the OpenFOAM Foundation. This includes among others utilities for pre- and post-processing of simulation cases, utilities to launch virtual environments containing the source code, and utilities to operate the continuous integration and continuous development environment in a self-hosted Gitlab instance