Fiber bundle topology optimization for mass and heat transfer in laminar flowThis paper presents fiber bundle topology optimization for mass and heat transfer in surface and volume flow in the laminar region, to optimize the matching between the pattern of a surface structure…Yongbo Deng, Jan G. Korvink·Nov 14, 2024SaveLearn
Melting of floating ice cylinders in fresh and saline environmentsWe experimentally investigated the melting of floating ice cylinders. Experiments were carried out in a tank, with ice cylinders with radii between 5 cm and 12 cm, floating horizontally with their…Edoardo Bellincioni, Detlef Lohse, Sander G. Huisman·Nov 14, 2024SaveLearn
Equation-informed data-driven identification of flow budgets and dynamicsComputational Fluid Dynamics (CFD) is an indispensable method of fluid modelling in engineering applications, reducing the need for physical prototypes and testing for tasks such as design…Nataliya Sevryugina, Serena Costanzo, Stephen de Bruyn Kops et al.·Nov 14, 2024SaveLearn
Influence of the free surface on turbulent kinetic energy in the wake of a full shipTurbulent kinetic energy (TKE) is a measure for unsteady loads and important regarding the design of e.g. propellers or energy-saving devices. While simulations are often done for a double-body,…Luise Draheim, Nikolai Kornev·Nov 14, 2024SaveLearn
Mean flow data assimilation using physics-constrained Graph Neural NetworksDespite their widespread use, purely data-driven methods often suffer from overfitting, lack of physical consistency, and high data dependency, particularly when physical constraints are not…M. Quattromini, M. A. Bucci, S. Cherubini et al.·Nov 14, 2024SaveLearn
Goal-oriented Feature Extraction: a novel approach for enhancing data-driven surrogate modelSurrogate model can replace the parametric full-order model (FOM) by an approximation model, which can significantly improve the efficiency of optimization design and reduce the complexity of…Xu Wang, Ruiqi Huang, Jiaqing Kou et al.·Nov 14, 2024SaveLearn
CaLES: A GPU-accelerated solver for large-eddy simulation of wall-bounded flowsWe introduce CaLES, a GPU-accelerated finite-difference solver designed for large-eddy simulations (LES) of incompressible wall-bounded flows in massively parallel environments. Built upon the…Maochao Xiao, Alessandro Ceci, Pedro Costa et al.·Nov 14, 2024SaveLearn
A machine learning enhanced discontinuous Galerkin method for simulating transonic airfoil flow-fieldsAccurate and rapid prediction of flow-fields is crucial for aerodynamic design. This work proposes a discontinuous Galerkin method (DGM) whose performance enhances with increasing data, for rapid…Yiwei Feng, Lili Lv, Weixiong Yuan et al.·Nov 14, 2024SaveLearn
Do irrotational water waves remain irrotational in the limit of a vanishing viscosity?Theoretical results on water waves almost always start by assuming irrotationality of the flow in order to simplify the formulation. In this work, we investigate the well-foundedness of this…Alan Riquier, Emmanuel Dormy·Nov 14, 2024SaveLearn
Modeling time-delayed acoustic interactions of cavitation bubbles and bubble clustersWe propose a low-dimensional modeling approach to simulate the dynamics, acoustic emissions and interactions of cavitation bubbles, based on a quasi-acoustic assumption. This quasi-acoustic…Pierre Coulombel, Fabian Denner·Nov 13, 2024SaveLearn
Aerodynamic Significance of Mass Distribution on Samara DescentSamaras, a distinct category of fruit, are composed of heavier seeds and lighter wings. Diversity in morphologies and structures subtly contributes to the flight patterns of various seeds, thereby…Zhao-Bang Hou, Jun-Duo Zhang, Yun-Da Li et al.·Nov 13, 2024SaveLearn
Recovering head and flux distributions at the sediment-water interface for arbitrary, transient bedforms by inversion of photographic time seriesExisting works that predict bedform-induced hyporheic exchange flux (HEF) typically either assume a simplified streambed shape and corresponding sinusoidal head distribution or rely on costly…Yoni Teitelbaum, Shai Arnon, Aaron Packman et al.·Nov 13, 2024SaveLearn
Mathematical Analysis of Axisymmetrization and Enhanced Inviscid Damping in 2D Linearized Euler FlowThis paper extends the mathematical theory of axisymmetrization and vorticity depletion within the two-dimensional (2D) Euler equations, with an emphasis on the dynamics of radially symmetric,…Rômulo Damasclin Chaves dos Santos·Nov 13, 2024SaveLearn
Benjamin-Feir instability of wave packets at interface of liquid half-space and layerThe propagation of internal waves in a hydrodynamic system comprising a solid bottom and an upper half-space is investigated. The study is conducted within the framework of a nonlinear…Olga Avramenko, Volodymyr Naradovyi·Nov 13, 2024SaveLearn
An Alternative Scaling for Roughness Transitions in Turbulent Flows: The Role of the Internal Boundary LayerWhen turbulent boundary layer flows encounter abrupt roughness changes, an Internal Boundary Layer (IBL) forms. Equilibrium theory breaks down in the nonequilibrium IBL, which may extend O(10) km for…Justin P. Cooke, George I. Park, Douglas J. Jerolmack et al.·Nov 13, 2024SaveLearn
incompressibleFoam: a new time consistent framework with BDF and DIRK integration schemesThis work focuses on the development of a new incompressible solver, incompressibleFoam, within OpenFOAM and integrating several numerical methods within the same framework. Two momentum…Paulin Ferro, Pierre-Etienne Meiller, Paul Landel et al.·Nov 13, 2024SaveLearn
Scaling Function Learning: A sparse aerodynamic data reconstruction method for generalizing aircraft shapesAccurate and complete aerodynamic data sets are the basis for comprehensive and accurate evaluation of the overall performance of aircraft. However, the sampling cost of full-state aerodynamic data…Haitao Lin, Xu Wang, Weiwei Zhang·Nov 13, 2024SaveLearn
Droplet Bag Formation in Turbulent AirflowsWe present novel numerical simulations investigating the evolution of liquid droplets into bag-like structures in turbulent airflows. The droplet bag breakup problem is of significance for many…Kaitao Tang, Thomas A. A. Adcock, Wouter Mostert·Nov 13, 2024SaveLearn
Quasi-two-dimensional TurbulenceMany fluid-dynamical systems met in nature are quasi-two-dimensional: they are constrained to evolve in approximately two dimensions with little or no variation along the third direction. This has a…Alexandros Alexakis·Nov 13, 2024SaveLearn
Drop impact onto a heated surface in a depressurized environmentWe investigated the impact of a droplet on a heated surface in a depressurized environment, with a particular focus on the unique outcome observed under these conditions: magic carpet breakup. This…Ryuta Hatakenaka, Yoshiyuki Tagawa·Nov 13, 2024SaveLearn
Heat transfer in a planer diverging channel with a slot jet inletThis article delves into a numerical exploration of two-dimensional, incompressible, laminar flow within a confined diverging jet. The study aims to understand how variations in the inlet opening…Md Insiat Islam Rabby, Mohammad Ali Rob Sharif, Mohammad Tarequl Islam et al.·Nov 13, 2024SaveLearn
D-shaped body wake control through flexible filamentsIn this study, we investigate the flow around a canonical blunt body, specifically a D-shaped body of width D, in a closed water channel. Our goal is to explore near-wake flow modifications when a…J. C. Muñoz-Hervás, B. Semin, M. Lorite-Díez et al.·Nov 13, 2024SaveLearn
LES-FGM modelling of non-premixed auto-igniting turbulent hydrogen flames including preferential diffusionTabulated chemistry methods are a well-known strategy to efficiently store the flows thermochemical properties. In particular, the Flamelet-Generated Manifold (FGM) is a widely used technique that…Alessandro Ballatore, Diego Quan Reyes, Hesheng Bao et al.·Nov 13, 2024SaveLearn
Large-scale self-organisation in dry turbulent atmospheresHow turbulent convective fluctuations organise to form large-scale structures in planetary atmospheres remains a question that eludes quantitative answers. The assumption that this process is the…Alexandros Alexakis, Raffaele Marino, Pablo D. Mininni et al.·Nov 13, 2024SaveLearn
Data-Driven Discovery of a New Ginzburg-Landau Reduced-Order Model for Vortex SheddingVortex shedding is an important physical phenomenon observed across many spatial and temporal scales in fluids. Previous experimental and theoretical studies have established a hierarchy of local and…Joseph J. Williams, Zachary G. Nicolaou, J. Nathan Kutz et al.·Nov 13, 2024SaveLearn