A5053926493- Oceanographic and Atmospheric Processes
- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Computational Fluid Dynamics and Aerodynamics
- Geology and Paleoclimatology Research
- Turbomachinery Performance and Optimization
- Climate variability and models
- Marine and environmental studies
- Ocean Waves and Remote Sensing
- Coastal and Marine Dynamics
- Aquatic and Environmental Studies
- Geological formations and processes
- Marine and fisheries research
- Numerical methods for differential equations
- Tropical and Extratropical Cyclones Research
- Geological Studies and Exploration
- Meteorological Phenomena and Simulations
- Fluid Dynamics and Turbulent Flows
- Tribology and Lubrication Engineering
- Climate change and permafrost
- Combustion and flame dynamics
- Real-time simulation and control systems
- Coastal wetland ecosystem dynamics
- Advanced Numerical Methods in Computational Mathematics
Institute of Materials Research of the Slovak Academy of Sciences
2024
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2012-2024
Linde (Germany)
2016-2024
Delft University of Technology
2022
Hamburg University of Technology
2020-2021
Universität Hamburg
1998-2016
Heinz Maier-Leibnitz Zentrum
2012
Leibniz Supercomputing Centre
2012
TU Dresden
2012
Goethe University Frankfurt
2012
A weakly nonhydrostatic, two‐layer numerical model based on the Boussinesq equations is presented which capable of describing, among others, generation and propagation nonlinear dispersive internal waves in Strait Gibraltar. The depends one space coordinate only, but it retains several features a fully three‐dimensional by including realistic bottom profile, variable channel width, trapezoidal cross section. primitive include horizontal diffusion, friction, friction between two water layers....
The population of Calanus finmarchicus in the North Sea is replenished each spring by invasion from an overwintering stock located beyond shelf edge. A combination field observations, statistical analysis Continuous Plankton Recorder (CPR) data, and particle tracking model simulations, was used to investigate processes involved cross‐shelf invasion. results showed that main source animals entering at depths greater than 600 m Faroe–Shetland Channel, where concentrations up 620 −3 are found...
A new numerical two-layer model is presented, which describes the generation of internal tidal bores and their disintegration into solitary waves in Strait Messina. This used to explain observations made by synthetic aperture radar (SAR) from European Remote Sensing satellites ERS 1 2. The analysis available 1/2 SAR data Messina adjacent sea areas show that 1) northward as well southward propagating are generated Messina, 2) observed more frequently than waves, 3) surface manifestations...
A hydrostatic, reduced gravity, two‐dimensional primitive equation numerical model for the simulation of transient bottom arrested gravity plumes was developed by adopting an algorithm from a wadden sea (a that simulates wetting and drying mud flats, sand banks, etc.) with movable lateral boundary. The vertically integrated nonlinear rotational accounts dissipation momentum due to friction entrainment water mass properties spatially structured but stagnant ambient body. It predicts temporal...
A 3-d baroclinic coupled ice–ocean model, applied to the connected marginal seas, North Seaand Baltic Sea, was used investigate seasonal cycle of both heat content watercolumn and atmosphere–ocean exchange throughout cycle. Case studies werecarried out investigate, quantify inter-compare intra-annual sensitivity thermalstate seas in response changes wind forcing, air temperature freshwater runoff. The prescribed model forcing were well within range observedvariability. simulation for a...
In the present paper a hydrostatic "reduced gravity" model, generally used to simulate transient bottom-arrested gravity plumes, was coupled with sediment transport model. The model considers respective contribution of suspended particles on buoyancy plume and allows one autosuspension size-differential deposition sediments based local turbulence settling velocities. Simulations using reveal that sediment-enriched plumes are able inject both entrained original shelf water masses into...
Recent investigations on deep water renewal point to the important role of dense formed continental shelves surrounding Arctic Ocean. In this investigation a hydrostatic, reduced gravity, primitive equation model for simulation spatial and temporal evolution gravity plumes slope is applied compared observed outflow plume water, originally in Storfjorden (Svalbard), into Greenland Sea toward Fram Strait. The vertically integrated, nonlinear, rotational accounts entrainment mass properties...
The contribution of brine-enriched bottom water from Arctic shelves to intermediate and deep masses the adjacent Ocean or Nordic Seas is a widely discussed topic in Oceanography. This paper presents an overview process-oriented modelling which was conducted deepen our understanding oceanic convection its role mass formation. It arrives at conceptual picture convective formation shelf seas as consequence ice–ocean interactions considers sediments slope convection. To investigate discuss...
Based on the results of a prior study about fan blade degradation, which state noticeable influence small geometric changes performance, an adjoint computational fluid dynamics method is applied to systematically analyze sensitivities performance leading edge geometry. As early as during manufacture, geometries vary due fabrication tolerances. Later, when in service, engine operation degradation can be reduced but not perfectly fixed by maintenance, repair and overhaul processes. The...
A three‐dimensional nonhydrostatic convection model, which accounts for small‐scale ice‐ocean interactions, is used to study in shallow sea (coastal) ice formation regions contribute significantly water mass both the Arctic and Antarctic Ocean. For certain conditions results presented this paper are also transferable open ocean convection. The model applied an initial well‐mixed at rest with a temperature close freezing point. ocean, initially free of ice, exposed cold dry polar air. We...