A5055162062- Fluid Dynamics and Heat Transfer
- Lattice Boltzmann Simulation Studies
- Surface Modification and Superhydrophobicity
- Computational Fluid Dynamics and Aerodynamics
- Computer Graphics and Visualization Techniques
- Fluid Dynamics and Thin Films
- Meteorological Phenomena and Simulations
- Advanced Numerical Methods in Computational Mathematics
- Enhanced Oil Recovery Techniques
- Advanced Numerical Analysis Techniques
- Fluid Dynamics Simulations and Interactions
- Fluid Dynamics and Turbulent Flows
- Heat Transfer and Boiling Studies
- Heat Transfer and Optimization
- Regional Development and Management Studies
- Computational Geometry and Mesh Generation
- Tropical and Extratropical Cyclones Research
- Rheology and Fluid Dynamics Studies
- Oceanographic and Atmospheric Processes
- Adhesion, Friction, and Surface Interactions
- Scientific Computing and Data Management
- Hydrology and Sediment Transport Processes
- Energy Efficiency and Management
- Electrowetting and Microfluidic Technologies
- Hydraulic flow and structures
Technical University of Darmstadt
2014-2024
Analysis Group (United States)
2023-2024
University of Mostar
2024
Institut IGH (Croatia)
2023
Vestas (Denmark)
2019
Centre National de la Recherche Scientifique
2018
Météo-France
2018
Université de Toulouse
2018
Laboratoire d'Aérologie
2018
Université Toulouse III - Paul Sabatier
2018
Abstract. This paper presents the Meso-NH model version 5.4. is an atmospheric non hydrostatic research that applied to a broad range of resolutions, from synoptic turbulent scales, and designed for studies physics chemistry. It limited-area employing advanced numerical techniques, including monotonic advection schemes scalar transport fourth-order centered or odd-order WENO momentum. The includes state-of-the-art parameterization are important represent convective-scale phenomena eddies, as...
Abstract. This paper presents the Meso-NH model version 5.4. is an atmospheric non hydrostatic research that applied to a broad range of resolutions, from synoptic turbulent scales, and designed for studies physics chemistry. It limited-area employing advanced numerical techniques, including monotonic advection schemes scalar transport fourth-order centered or odd-order WENO momentum. The includes state-of- the-art parameterization are important represent convective-scale phenomena eddies,...
Abstract A combination of turbulence-resolving large-eddy simulations and observations are used to examine the influence swell amplitude propagation angle on surface drag. Based analysis a new roughness parameterization with nonequilibrium wave effects is proposed. The accounts for wavelength its relative motion respect mean wind direction. proposed tested in uncoupled three-dimensional Weather Research Forecasting (WRF) at grid sizes near 1 km where we explore potential implications our...
Surfactant transport plays an important role in many technical processes and industrial applications such as chemical reactors, microfluidics, printing coating technology. High fidelity numerical simulations of two-phase flow phenomena reveal rich insights into the dynamics, heat, mass species transport. In present study, a two-field formulation for surfactant within algebraic volume fluid method is presented. The slight diffuse nature representing interface utilized to track concentration...
The breakup dynamics of a capillary bridge on hydrophobic stripe between two hydrophilic stripes is studied experimentally and numerically using direct numerical simulations. formed from an evaporating water droplet wetting three neighboring chemically patterned surface. By considering the process in phase space representation, can be evaluated without uncertainty determining precise time. simulations are based Volume-of-Fluid (VOF) method implemented Free Surface 3D (FS3D). In order to...
Combining machine learning (ML) with computational fluid dynamics (CFD) opens many possibilities for improving simulations of technical and natural systems. However, CFD+ML algorithms require exchange data, synchronization, calculation on heterogeneous hardware, making their implementation large-scale problems exceptionally challenging. We provide an effective scalable solution to developing using open source software OpenFOAM SmartSim. SmartSim provides Orchestrator that significantly...
A new parallelized unsplit geometrical Volume of Fluid (VoF) algorithm with support for arbitrary unstructured meshes and dynamic local Adaptive Mesh Refinement (AMR), as well two three dimensional computation is developed. The VoF supports in order to enable computations involving flow domains complexity. implementation the method done within framework OpenFOAM library Computational Continuum Mechanics (CCM) using C++ programming language modern policy based design high program code...
A straightforward and computationally efficient Consecutive Cubic Spline (CCS) iterative algorithm is proposed for positioning the planar interface of unstructured geometrical Volume-of-Fluid method in arbitrarily-shaped cells. The CCS a two-point root-finding [1, chap. 2], designed VOF problem, where volume fraction function has diminishing derivatives at ends search interval. As algorithm, re-uses values from previous iterations does not rely on interval bracketing. requires only two...
<title>Abstract</title> Preventing fluid penetration poses a challenging reliability concern in the context of power electronics, which is usually caused by unforeseen microfractures along sealing joints. A better and more reliable product design heavily depends on understanding dynamic wetting processes happening inside these complex microfractures, i.e. microchannels. novel automated image processing procedure proposed this work for analyzing moving interface contact angle In particular,...
Geometric flux-based Volume-of-Fluid (VOF) methods (Marić et al., 2020) are widely considered consistent in handling two-phase flows with high density ratios. However, although the conservation of mass and momentum is for incompressible single-field Navier–Stokes equations without phase-change (Liu 2023), discretization may easily introduce inconsistencies that result very large errors or catastrophic failure. We apply consistency conditions derived ρLENT unstructured Level Set/Front...
The numerical simulation of wetting and dewetting geometrically complex surfaces benefits from unstructured methods because they discretize the domain with second-order accuracy. A recently developed geometric Volume-of-Fluid (VOF) method, plicRDF-isoAdvector is chosen to investigate processes its volume conservation property high computational efficiency. present work verifies validates method for problems. We four verification studies. first study investigates accuracy interface advection...
Abstract Airborne wind observations collected by the National Oceanic and Atmospheric Administration's (NOAA) WP‐3D aircraft are compared with winds retrieved NOAA/Environmental Technology Laboratory's ground‐based scanning Doppler lidar within Wipp Valley during Special Observing Period of Mesoscale Alpine Programme. Comparisons performed along individual flight tracks over an aggregated dataset consisting all pairs that were approximately coincident in time space. The impact several...
Abstract Using extensive observations collected from various platforms around the Brenner Pass in Austrian Alps during Mesoscale Alpine Programme, a detailed description of kinematic and thermodynamic structure shallow-foehn event that occurred on 20 October 1999 Wipp Valley is constructed. Downstream gap flow develops well-mixed surface layer capped by relatively strong temperature inversion 5–6 K. Such inversions are often assumed to be kinematically similar free at top liquid; however,...
Abstract In this work, we consider the geometrical problem of numerical advection a hypersurface by prescribed velocity field in special case when intersects domain boundary. This emerges from discretization continuum models for dynamic wetting. The kinematic evolution equation [1], [2] expresses fundamental relationship between rate change contact angle and structure transporting field. We employ simple version Level Set method to numerically solve hyperbolic transport interface two...