Helmholtz Institute Freiberg for Resource Technology
RODARE Docs (Rossendorf Data Repository - Helmholtz-Zentrum Dresden-Rossendorf, HZDR)Not a member yet
1328 research outputs found
Sort by
cupla - C++ User interface for the Platform independent Library Alpaka
No full textcupla [qχɑpˈlɑʔ] is a simple user interface for the platform independent parallel kernel acceleration library alpaka. It follows a similar concept as the NVIDIA® CUDA® API by providing a software layer to manage accelerator devices. alpaka is used as backend for cupla
Bubble Generation by Micro-Orifices with Application on Activated Sludge Wastewater Treatment
No full textWe studied the initial gas dispersion performance of diffuser concepts based on micro-orifices and needles with very fine orifice diameters in the range from 30 µm to 200 µm, as such diffusers are currently in discussion for energy-efficient wastewater treatment plants. To evaluate the performance of these micro-orifices, we compared them with industrial rubber membrane diffusers with respect to Sauter mean bubble diameter, pressure drop, frequency of bubble formation, oxygen transfer rate, and power demand for air compression. Our study revealed that, in comparison with rubber membrane diffusers bubbles generated from the micro-orifices transfer up to 82% more oxygen content into the continuous phase at up to 75% less power demand. Moreover, these micro-orifices are able to produce bubble sizes in the same range as the needle diffusers at 60% less pressure drop and 60% higher bubble generation frequency. Therefore, we also expect an improvement in the oxygen transfer coefficient KLa and standard oxygen transfer efficiency SOTE compared to commercial rubber membrane diffusers
C++ & Python API for Scientific I/O with openPMD
No full textopenPMD is an open metadata format for open data workflows in open science. This library provides a common high-level API for openPMD writing and reading. It provides a common interface to I/O libraries and file formats such as HDF5 and ADIOS. Where supported, openPMD-api implements both serial and MPI parallel I/O capabilities
Data set to illustrate advanced process-synchronized computed tomography for the investigation of periodic processes
No full textThis data set contains raw data and data read-in routines used for the publication:
"Advanced process-synchronized computed tomography for the investigation of periodic processes"
Object of investigation: A centrifugal pump that impeller rotates at 1480 rpm and that is operated in gas-liquid two phase flow.
Used CT imaging system: HireCT (high resolution gamma-ray computed tomography) scanner of the HZD
openPMD Example Data Sets from PIConGPU 0.2.0
No full textQuite outdated data but used in openPMD-api unit tests.
HDF5 data contains particle patches, ADIOS1 data does not. Uploading it here for reference, as a download point and for test reproducibility.Please use the more recent example data sets from https://github.com/openPMD/openPMD-example-dataset
RODARE Logos
No full textRODARE (Rossendorf Data Repository) is the institutional data repository at Helmholtz-Zentrum Dresden-Rossendorf. The initial logos of the platform are collected in this upload and are available as Open Access.If you wish to use the logo elsewhere it would be nice if you let us know
C++ & Python API for Scientific I/O with openPMD
No full textopenPMD is an open metadata format for open data workflows in open science. This library provides a common high-level API for openPMD writing and reading. It provides a common interface to I/O libraries and file formats such as HDF5 and ADIOS. Where supported, openPMD-api implements both serial and MPI parallel I/O capabilities
Stability of fluid layers carrying a normal electric current revisited
Full text linkIn this report we revisit the basic model of electromagnetic interfacial instability originally due to Sneyd (1985). The model consists of horizontally unbounded fluid layers carrying a uniform normal current in the presence of a co-planar vertically invariant magnetic field. The absence of lateral boundaries in this model leaves the self-magnetic field determined up to a gradient of the scalar magnetic potential. This was deemed a major deficiency of the model in our first report. In particular, it was not obvious that the perturbation of magnetic field, which is postulated by Sneyd in terms of the electric potential perturbation satisfies not only Ampère’s law but also the continuity of tangential electric field across the interface. On the other hand, Sneyd’s solution is rather specific and limited by several assumptions typical for aluminium reduction cells and electric-arc furnaces. Therefore it may be worthwhile to revisit Sneyd’s model in a more general set-up and using alternative more transparent approach