Fachbereich Ingenieurwissenschaften und Kommunikation
Refine
H-BRS Bibliography
- yes (302)
Departments, institutes and facilities
- Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE) (302) (remove)
Document Type
- Conference Object (150)
- Article (102)
- Part of a Book (18)
- Preprint (9)
- Report (7)
- Book (monograph, edited volume) (4)
- Contribution to a Periodical (4)
- Research Data (3)
- Doctoral Thesis (2)
- Lecture (1)
Year of publication
Keywords
- West Africa (5)
- advanced applications (5)
- modeling of complex systems (5)
- Hydrogen storage (4)
- Lattice Boltzmann Method (4)
- Applications in Energy Transport (3)
- Complex Systems Modeling and Simulation (3)
- Computational fluid dynamics (3)
- Force field (3)
- Global horizontal irradiance (3)
- Network simulation (3)
- Non-linear systems (3)
- Optimization (3)
- Quality diversity (3)
- Rosenbrock-Wanner Methods (3)
- error analysis (3)
- evaluation (3)
- gas transport networks (3)
- mathematical chemistry (3)
- observational data and simulations (3)
- polyethylene (3)
- 3D-Druck (2)
- Approximated Jacobian (2)
- Automatic Differentiation (2)
- Bayesian optimization (2)
- DC-cascade (2)
- Efficiency (2)
- Extrusion blow molding (2)
- Forecasting (2)
- Führungspositionen (2)
- Ghana (2)
- HTS (2)
- High-performance computing (2)
- Horizontale und vertikale Segmentation (2)
- Journalistinnen (2)
- Machine Learning (2)
- Machine learning (2)
- Medienproduktion (2)
- Method of lines (2)
- Microgrid (2)
- Molecular dynamics (2)
- Molecular modeling (2)
- Molecular simulation (2)
- Natur nachbauen (2)
- Numerical optimization (2)
- Order reduction (2)
- Praktische Bionik (2)
- Prozessmanagement (2)
- Prozessorganisation (2)
- Pytorch (2)
- Quotierung (2)
- Semi-Lagrangian (2)
- Simulation (2)
- Topological reduction (2)
- Volterra-Wiener series (2)
- W methods (2)
- W-Methods (2)
- WRF-Solar (2)
- Was kann Bionik (2)
- applications (2)
- crystallization (2)
- discrete optimisation (2)
- dispatching problem (2)
- double pulse test (2)
- e-learning (2)
- efficiency (2)
- energy efficiency (2)
- energy meteorology (2)
- globally convergent solvers (2)
- grid-forming converter (2)
- injection moulding (2)
- learning outcomes (2)
- local chain orientation (2)
- massively parallel calculations (2)
- mathematical and numerical algorithms and methods (2)
- measurement errors (2)
- medium voltage insulation (2)
- mesoscale coarse-graining (2)
- permanent magnet synchronous generator (PMSG) (2)
- photovoltaic (2)
- power converter (2)
- power semiconductors (2)
- project-based learning (2)
- quantum mechanics (2)
- relaxation (2)
- sensor phenomena and characterization (2)
- shrinkage (2)
- simulation and modeling (2)
- state of charge (2)
- synchronous generator (2)
- wide band gap (2)
- wind energy conversion systems (WECS) (2)
- Öffentlichkeit (2)
- 3D printing (1)
- 6LoWPAN (1)
- ACPYPE (1)
- AI based translation (1)
- AMBER (1)
- ANN (1)
- ANN controller (1)
- Access regulation (1)
- Adams-Moulton (1)
- Adaptive optics (1)
- AgroTICs (1)
- Aircraft (1)
- Alkane (1)
- Antibiotics resistance (1)
- Application in electrochemistry (1)
- Applied sciences (1)
- Approximate Matrix Factorization (1)
- Artificial bulk viscosity (1)
- Atmosphere flow (1)
- Automation (1)
- Automotive (1)
- B-splines (1)
- BDF (1)
- Bachelor’s program (1)
- Basis set (1)
- Battery pack configurations (1)
- Behälterbau (1)
- Benetzbarkeit (1)
- Biokunststoff (1)
- Biologische Datenbanken (1)
- Biologisches Prinzip (1)
- Biology Push (1)
- Bionik (1)
- Bioökonomie (1)
- Blue light (1)
- Bluetooth (1)
- CAE metadata structures (1)
- CPACS (1)
- Capacity (1)
- Carbohydrate (1)
- Cell-to-cell parameter variations (1)
- Competition (1)
- Complex systems modeling and simulation (1)
- Compositional Pattern Producing Networks (1)
- Compressible (1)
- Compressible flows (1)
- Compressor modeling (1)
- Computational chemistry (1)
- Computational modeling (1)
- Contingency analysis (1)
- Control (1)
- Crystallinity (1)
- Cubature (1)
- Current limiter (1)
- Current measurement (1)
- Cybersecurity (1)
- DC electric drives (1)
- DC-DC converter (1)
- Design (1)
- Differential-algebraic equations (1)
- Digital Twin (1)
- Digitale Medien (1)
- Digitalisierungsstrategie (1)
- Digitization (1)
- Distortion (1)
- Distribution Grid (1)
- Draw ratio (1)
- Droop control (1)
- Effiziente Transportalternativen (1)
- Electric Vehicles (1)
- Electric mobility (1)
- Electrical Energy System (1)
- Elektrofahrrad (1)
- Elektromobilität (1)
- Energy Modeling (1)
- Energy System (1)
- Engineering (1)
- Ethernet (1)
- Evolutionary computation (1)
- Evolutionärer Algorithmus (1)
- Exergame (1)
- Exponential Methods (1)
- Exponential Rosenbrock Methods (1)
- Extrusionsblasformen (1)
- Field Programmable Gate Array (FPGA) (1)
- Flow control (1)
- Flow direction (1)
- Fluid Dynamics (1)
- Flux coefficient (1)
- Fog (1)
- Force field parameters (1)
- Forklifts (1)
- Fourier scatterometry (1)
- Frau (1)
- Free space optics (1)
- Führung (1)
- GERG gas law (1)
- GROW (1)
- Gas transport simulation (1)
- Gauss–Hermite quadrature (1)
- Genetic algorithm (1)
- Geometry (1)
- Ghanaian health sector (1)
- Gitter-Boltzmann-Methode (1)
- Glycam06 (1)
- Gordon surface (1)
- Grid Analyzer (1)
- Grid Control (1)
- Grid Stability (1)
- Grid-forming converters (1)
- Gromacs (1)
- Gruppendiskussion (1)
- H-BRS (1)
- Half-Bridge Series Resonant Converter (HB-SRC) (1)
- Harmonic analysis (1)
- High Power Density Systems (1)
- High-resolution displays (1)
- Hochschule Bonn-Rhein-Sieg (1)
- Hydrocarbon (1)
- Hydrogen (1)
- Hyperalgesia (1)
- Identification and control methods (1)
- Index-1 DAEs (1)
- Index-one DAEs (1)
- Information and Communication Technologies (1)
- Informationssystem (1)
- Integrative simulation (1)
- Interdisciplinary education (1)
- Internet of Things (1)
- Introductury project (1)
- Inverter (1)
- Irreguläre Gitter (1)
- Journalismus (1)
- Julia package Differential Equations (1)
- Kennzahlen (1)
- Kinetic theory (1)
- Konstruieren (1)
- Kontaktwinkel (1)
- Kunstruktionsarten (1)
- Kunststoffe (1)
- Kunststoffhohlkörper (1)
- LSTM (1)
- Lattice Boltzmann (1)
- Lattice Boltzmann Method Code (1)
- Lattice Boltzmann method (1)
- Lattice-Boltzmann (1)
- Lattice-Boltzmann methods (1)
- Lean Production (1)
- Lennard-Jones parameters (1)
- Linear viscoelasticity (1)
- Lineare Viskoelastizität (1)
- LoRaWAN (1)
- Long-distance gas network (1)
- MOOC (1)
- MP2.5 (1)
- MRT-LBM (1)
- Machine vision (1)
- Manipulator (1)
- Materialbeschreibung (1)
- Materials science (1)
- Maximal covering location problem (1)
- Mediendienste (1)
- Medienwirkungsforschung (1)
- Medium Voltage (1)
- Membrane protein (1)
- Meso-scale simulation (1)
- Metal hydride (1)
- Metal hydride storage (1)
- Mixed method evaluation (1)
- Mobilitätsforschung (1)
- Modelica (1)
- Modeling (1)
- Modelling (1)
- Modular software packages (1)
- Modulation (1)
- Mold temperature (1)
- Molecular rotation (1)
- Molekulardynamik (1)
- Molekulare Simulation (1)
- Monte-Carlo simulation (1)
- Monte-Carlo-Simulation (1)
- Motion Control Systems (1)
- Motivation (1)
- Multi-drug efflux (1)
- Multi-level converters (1)
- Multi-objective (1)
- Multi-stage (1)
- Multidimensional Z-transforms (1)
- Multilevel Inverters (1)
- Multiphase flow (1)
- Multiport converter (1)
- Multirate Methods (1)
- Mädchen (1)
- Navier-Stokes equation (1)
- Neural collision operator (1)
- Neural networks (1)
- Neuropathic pain (1)
- New study course (1)
- Non-linear optimization (1)
- Nonbonded scaling factor (1)
- Nonlinear sampled-data system (1)
- Normung (1)
- Numerical stability (1)
- OER (1)
- OFDM-based DCSK (1)
- OFDM-based SR-QCSK (1)
- Ocean flow (1)
- Off-lattice Boltzmann (1)
- Open Educational Resources (1)
- Order conditions (1)
- Organic compounds and Functional groups (1)
- Orthogonal chaotic vector shift keying (1)
- Orthotropic material behavior (1)
- Outer membrane channel (1)
- PDEs with Mixed Derivative Terms (1)
- PID (1)
- PWM converters (1)
- Parameter identification (1)
- Partial Differential Equations (1)
- Peer methods (1)
- Peer teaching (1)
- Phasenübergang (1)
- Phenotypic niching (1)
- Photovoltaic, Inverter (1)
- Polymerwerkstoffe (1)
- Power Hardware-in-the-loop (1)
- Power Supply (1)
- Power flow control (1)
- Power-to-gas (1)
- Process dependent material parameters (1)
- Produktsimulation (1)
- Project based learning (1)
- Projektmanagement (1)
- Prozessmanagementsoftware (1)
- Prozessoptimierung (1)
- Pulse Width Modulation (PWM) (1)
- Pulse width modulation (1)
- Pulse-width modulation (1)
- QPSK (1)
- Quantum mechanical methods (1)
- ROW methods (1)
- Range variability (1)
- Real-Time Simulation (1)
- Reanalysis (1)
- Redes de Sensores inalámbricos (1)
- Renewable energy (1)
- Resource Planning (1)
- Reverse Engineering (1)
- River alarm systems (1)
- Rodas5 (1)
- Rosenbrock methods (1)
- Rosenbrock–Wanner methods (1)
- Rube Goldberg machine (1)
- SARIMA (1)
- SCRUM (1)
- Sahel zone (1)
- Satellite (1)
- Schwindung (1)
- Scientific competency development (1)
- Semi-Lagrange-Verfahren (1)
- Shallow-water equations (1)
- Shan-Chen (1)
- Shan-Chen model (1)
- SiC (1)
- Silicon Carbide (SiC) (1)
- Simulations (1)
- Single-objective (1)
- Social engagement in university (1)
- Soft Switching (1)
- Software (1)
- Solar energy (1)
- Spurious velocity (1)
- Standardized Testing (1)
- Statistical Physics (1)
- Stereotyp (1)
- Storage modulus (1)
- Stratified flow (1)
- Strömungssimulation (1)
- Study Island (1)
- Study entrants (1)
- Surrogate models (1)
- Sustainability (1)
- Sustainable engineering (1)
- Taylor-Green (1)
- Taylor–Green vortex (1)
- Technik (1)
- Technik in Beziehung zu anderen Gebieten (1)
- Technikakzeptanz (1)
- Technology Pull (1)
- Theory of Rooted Trees (1)
- Thermodynamic data (1)
- Thermodynamische Stoffdaten (1)
- Topology (1)
- Treatment (1)
- Turbulence (1)
- Two-step W-methods (1)
- Unstructured grid (1)
- Unternehmen (1)
- Vector modulation (1)
- Verarbeitungsprozess (1)
- Verbesserungspotenzial (1)
- Verzug (1)
- Visual Computing (1)
- Visualization (1)
- Voltage measurement (1)
- WENO schemes (1)
- WSN (1)
- Water supply networks (1)
- Water supply systems (1)
- Web (1)
- Wireless sensor networks (1)
- X-in-the-Loop (1)
- ZigBee (1)
- aerosol (1)
- app (1)
- armature winding (1)
- artificial neural network (1)
- artificial neural networks (1)
- atmospheric aerosol (1)
- atomistic models (1)
- auxiliary power supply (1)
- battery (1)
- battery charging (1)
- biaxial stretching (1)
- biological object (1)
- boost converter (1)
- braking (1)
- brushless motors (1)
- brute force algorithm (1)
- brute force methods (1)
- calculations modeling (1)
- calculations modelling (1)
- cancer cells detection (1)
- capture and storage (1)
- carbon dioxide (1)
- cellular automata (1)
- classroom interaction (1)
- cognitive radio (1)
- collaborative learning (1)
- complete basis set limit (1)
- complex problems (1)
- complexity analysis (1)
- condition monitoring (1)
- control (1)
- cooperative sensing (1)
- coordinated charging (1)
- cross-disciplinary (1)
- cross-evaluation (1)
- current limiting (1)
- data management (1)
- dc electric drive (1)
- derivative-free optimization (1)
- design process (1)
- differential-algebraic equations (1)
- digital control system (1)
- digital manufacturing (1)
- diversity (1)
- driver assistance system (1)
- driver interface (1)
- drone (1)
- dynamic experiment (1)
- dynamic programming (1)
- e-learning course structure (1)
- electrical bicycle drive unit (1)
- employability (1)
- encoding, representation (1)
- endoscopy (1)
- energy detection (1)
- energy harvesting (1)
- energy infrastructures (1)
- energy monitoring (1)
- energy system analyses (1)
- energy system modeling (1)
- extrusion blow molding (1)
- factor load (1)
- fault ride through (1)
- first-semester students (1)
- force field (1)
- force field parameterization (1)
- force fields (1)
- fuel (1)
- fuel cell (1)
- fully superconducting (1)
- fully superconducting generator (1)
- fusion centre (1)
- gamification (1)
- gas-to-power (1)
- geschlechtsspezifische Faktoren (1)
- geschlechtsspezifische Sozialisation (1)
- graphics processing units (1)
- grating reconstruction (1)
- hands-on experiences (1)
- headways optimisation (1)
- high accuracy drives (1)
- high information rate (1)
- holistic learning (1)
- hydrides (1)
- hydrocarbon (1)
- hydrogen (1)
- hydrogen economies (1)
- hydrogen infrastructures (1)
- impedance of battery (1)
- in-home charging (1)
- information parameter (1)
- input-series output-parallel (1)
- integrative Simulation (1)
- integrative simulation (1)
- intercultural learning (1)
- interdisciplinary projects (1)
- international (1)
- international teams (1)
- ionic liquids (1)
- irradiance (1)
- isolated DC-transformer (1)
- large classrooms (1)
- li-ion battery (1)
- lipid (1)
- load forecasting (1)
- local optimization (1)
- long-wave infrared (1)
- magnetic hyperthermia (1)
- magnetic nanoparticles (1)
- maximum power point tracker (1)
- medium voltage direct current (MVDC) (1)
- melting heater (1)
- micromobility (1)
- modeling (1)
- models (1)
- molecular dynamics (1)
- molecular simulations (1)
- motivating first year students (1)
- motivation of first year students (1)
- motor drive (1)
- mp2 (1)
- multi-body dynamic simulation (1)
- multi-solution optimization (1)
- multidimensional Z-transforms (1)
- multidisciplinary (1)
- multiscale parameterization (1)
- multistep (1)
- neural network (1)
- neural networks (1)
- neuromorphic processing (1)
- noise, vibration, and harshness (1)
- non-linear projection (1)
- nonlinear sampled-data systems (1)
- objective function (1)
- octane (1)
- ontology (1)
- optimisation of control system (1)
- optimization of telecommunications systems (1)
- orientation behavior (1)
- orthogonal frequency division multiplexing (1)
- orthotropes prozessabhängiges Materialverhalten (1)
- orthotropic process-dependent material behavior (1)
- pancreatic cancer (1)
- parallel computing (1)
- parameter and state estimation (1)
- parametric (1)
- partial-shaded photovoltaic (1)
- peer-assisted learning (1)
- performance analysis (1)
- permanent magnet motors (1)
- persistent surveillance (1)
- phase angle jump (1)
- photovoltaic system (1)
- pipeline transport (1)
- plastic industry (1)
- plastic manufacturing (1)
- plug-in electric vehicle (1)
- power rectifier (1)
- power spectrum (1)
- practical learning (1)
- pre-optimization (1)
- problem based learning (1)
- professors as mentors (1)
- professors as tutors (1)
- propan-2-ol (1)
- pulse width modulation (1)
- quiz formats (1)
- quizzes (1)
- racing (1)
- radio transceivers (1)
- rate of change of frequency (1)
- recycling (1)
- renewable energy (1)
- replica (1)
- self-assessment (1)
- self-learning exercises (1)
- semantic technologies (1)
- sensor systems (1)
- serious games (1)
- simulation (1)
- simulation process (1)
- smart agriculture (1)
- smoothing procedures (1)
- solar power (1)
- sparse grids (1)
- spectrum sensing (1)
- stability (1)
- structural dynamics (1)
- student activating approaches (1)
- superconductor (1)
- sustainability (1)
- switching transitions (1)
- switching-mode power supply (1)
- teaching topics (1)
- temperature control (1)
- temperature controller (1)
- temporal discretization (1)
- tensile test (1)
- therapy (1)
- thermal imaging (1)
- thermo-mechanical properties (1)
- throughput maximization (1)
- time integration (1)
- topological reduction (1)
- traffic data (1)
- transmission phase gratings (1)
- transport systems (1)
- trapezoidal rule (1)
- two-photon polymerization (1)
- uniaxial stretching (1)
- urban planning (1)
- vehicle dynamics (1)
- velocity stabilising systems (1)
- videos (1)
- warpage (1)
- water dimer (1)
- wavelength (1)
- wearable photovoltaic system (1)
- weighting factors (1)
- welfare technology (1)
- wind energy (1)
- wind nuisance (1)
- wireless communication (1)
- wireless networks’ topology (1)
- wireless sensors (1)
- youBot (1)
- zero-voltage switching (ZVS) (1)
Error analysis in a high accuracy sampled-data velocity stabilising system using Volterra series
(2015)
Intention: Within the research project EnerSHelF (Energy-Self-Sufficiency for Health Facilities in Ghana), i. a. energy-meteorological and load-related measurement data are collected, for which an overview of the availability is to be presented on a poster.
Context: In Ghana, the total electricity consumed has almost doubled between 2008 and 2018 according to the Energy Commission of Ghana. This goes along with an unstable power grid, resulting in power outages whenever electricity consumption peaks. The blackouts called "dumsor" in Ghana, pose a severe burden to the healthcare sector. Innovative solutions are needed to reduce greenhouse gas emissions and improve energy and health access.
The clear-sky radiative effect of aerosol-radiation interactions is of relevance for our understanding of the climate system. The influence of aerosol on the surface energy budget is of high interest for the renewable energy sector. In this study, the radiative effect is investigated in particular with respect to seasonal and regional variations for the region of Germany and the year 2015 at the surface and top of atmosphere using two complementary approaches.
First, an ensemble of clear-sky models which explicitly consider aerosols is utilized to retrieve the aerosol optical depth and the surface direct radiative effect of aerosols by means of a clear sky fitting technique. For this, short-wave broadband irradiance measurements in the absence of clouds are used as a basis. A clear sky detection algorithm is used to identify cloud free observations. Considered are measurements of the shortwave broadband global and diffuse horizontal irradiance with shaded and unshaded pyranometers at 25 stations across Germany within the observational network of the German Weather Service (DWD). Clear sky models used are MMAC, MRMv6.1, METSTAT, ESRA, Heliosat-1, CEM and the simplified Solis model. The definition of aerosol and atmospheric characteristics of the models are examined in detail for their suitability for this approach.
Second, the radiative effect is estimated using explicit radiative transfer simulations with inputs on the meteorological state of the atmosphere, trace-gases and aerosol from CAMS reanalysis. The aerosol optical properties (aerosol optical depth, Ångström exponent, single scattering albedo and assymetrie parameter) are first evaluated with AERONET direct sun and inversion products. The largest inconsistency is found for the aerosol absorption, which is overestimated by about 0.03 or about 30 % by the CAMS reanalysis. Compared to the DWD observational network, the simulated global, direct and diffuse irradiances show reasonable agreement within the measurement uncertainty. The radiative kernel method is used to estimate the resulting uncertainty and bias of the simulated direct radiative effect. The uncertainty is estimated to −1.5 ± 7.7 and 0.6 ± 3.5 W m−2 at the surface and top of atmosphere, respectively, while the annual-mean biases at the surface, top of atmosphere and total atmosphere are −10.6, −6.5 and 4.1 W m−2, respectively.
The retrieval of the aerosol radiative effect with the clear sky models shows a high level of agreement with the radiative transfer simulations, with an RMSE of 5.8 W m−2 and a correlation of 0.75. The annual mean of the REari at the surface for the 25 DWD stations shows a value of −12.8 ± 5 W m−2 as average over the clear sky models, compared to −11 W m−2 from the radiative transfer simulations. Since all models assume a fixed aerosol characterisation, the annual cycle of the aerosol radiation effect cannot be reproduced. Out of this set of clear sky models, the largest level of agreement is shown by the ESRA and MRMv6.1 models.
Stably stratified Taylor–Green vortex simulations are performed by lattice Boltzmann methods (LBM) and compared to other recent works using Navier–Stokes solvers. The density variation is modeled with a separate distribution function in addition to the particle distribution function modeling the flow physics. Different stencils, forcing schemes, and collision models are tested and assessed. The overall agreement of the lattice Boltzmann solutions with reference solutions from other works is very good, even when no explicit subgrid model is used, but the quality depends on the LBM setup. Although the LBM forcing scheme is not decisive for the quality of the solution, the choice of the collision model and of the stencil are crucial for adequate solutions in underresolved conditions. The LBM simulations confirm the suppression of vertical flow motion for decreasing initial Froude numbers. To gain further insight into buoyancy effects, energy decay, dissipation rates, and flux coefficients are evaluated using the LBM model for various Froude numbers.
Turbulent compressible flows are traditionally simulated using explicit time integrators applied to discretized versions of the Navier-Stokes equations. However, the associated Courant-Friedrichs-Lewy condition severely restricts the maximum time-step size. Exploiting the Lagrangian nature of the Boltzmann equation’s material derivative, we now introduce a feasible three-dimensional semi-Lagrangian lattice Boltzmann method (SLLBM), which circumvents this restriction. While many lattice Boltzmann methods for compressible flows were restricted to two dimensions due to the enormous number of discrete velocities in three dimensions, the SLLBM uses only 45 discrete velocities. Based on compressible Taylor-Green vortex simulations we show that the new method accurately captures shocks or shocklets as well as turbulence in 3D without utilizing additional filtering or stabilizing techniques other than the filtering introduced by the interpolation, even when the time-step sizes are up to two orders of magnitude larger compared to simulations in the literature. Our new method therefore enables researchers to study compressible turbulent flows by a fully explicit scheme, whose range of admissible time-step sizes is dictated by physics rather than spatial discretization.