Wave-kinetic dynamics of forced-dissipated turbulent internal gravity wavesInternal gravity waves are an essential feature of stratified media, such as oceans and atmospheres. To investigate their dynamics, we perform simulations of the forced-dissipated kinetic equation…Vincent Labarre, Giorgio Krstulovic, Sergey Nazarenko·Jul 16, 2024SaveLearn
Non-equilibrium wall model for large eddy simulations of complex flows exhibiting turbulent smooth body separationIn this work, a non-equilibrium wall model is proposed for the prediction of turbulent flows experiencing adverse pressure gradients, including separated flow regimes. The mean-flow nonequilibrium is…Rahul Agrawal, Sanjeeb T. Bose, Parviz Moin·Jul 16, 2024SaveLearn
Harnessing an elastic flow instability to improve the kinetic performance of chromatographic columnsDespite decades of research and development, the optimal efficiency of slurry-packed HPLC columns is still hindered by inherent long-range flow heterogeneity from the wall to the central bulk region…Fabrice Gritti, Emily Y. Chen, Sujit S. Datta·Jul 16, 2024SaveLearn
Wind Tunnel Testing and Modeling Implications of an Advanced Turbine CascadeThis paper describes the extensive Wind Tunnel (WT) linear cascade testing campaign carried out on a constant section turbine blade developed for low subsonic applications. Comprehensive experimental…Sharath Sathish·Jul 15, 2024SaveLearn
Deep flows transmitted by forced surface gravity wavesWe examine a two-dimensional deep-water surface gravity wave packet generated by a pressure disturbance in the Lagrangian reference frame. The pressure disturbance has the form of a narrow-banded…Nick Pizzo, Gregory L. Wagner·Jul 15, 2024SaveLearn
Wetting and pressure gradient performance in a lattice Boltzmann color gradient modelAn accurate implementation of wetting and pressure drop is crucial to correctly reproducing fluid displacement processes in porous media. Although several strategies have been proposed in the…Mahmoud Sedahmed, Rodrigo C. V. Coelho·Jul 15, 2024SaveLearn
Physics Based & Machine Learning Methods For Uncertainty Estimation In Turbulence ModelingTurbulent flows play an important role in many scientific and technological design problems. Both Sub-Grid Scale (SGS) models in Large Eddy Simulations (LES) and Reynolds Averaged Navier Stokes…Minghan Chu·Jul 15, 2024SaveLearn
Large-eddy simulation of hydrodynamic noise from turbulent flows past an axisymmetric hull using high-order schemesIn this paper, wall-modeled large-eddy simulation (WMLES) is carried out with Ffowcs-Williams and Hawkings (FW-H) acoustic analogy to investigate the turbulent flow and hydrodynamic noise of an…Peng Jiang, Shijun Liao, Bin Xie·Jul 15, 2024SaveLearn
Dynamics of fluid-driven fractures in the viscous-dominated regimeDuring hydraulic fracturing, the injection of a pressurized fluid in a brittle elastic medium leads to the formation and growth of fluid-filled fractures. A disc-like or penny-shaped fracture grows…Sri Savya Tanikella, Marie C Sigallon, Emilie Dressaire·Jul 15, 2024SaveLearn
Axisymmetric displacement flows in fluid-driven fracturesDisplacement flows are common in hydraulic fracturing, as fracking fluids of different composition are injected sequentially in the fracture. The injection of an immiscible fluid at the center of a…Sri Savya Tanikella, Emilie Dressaire·Jul 15, 2024SaveLearn
Dynamics of fluid-driven fractures across material heterogeneitiesFracture propagation is highly sensitive to the conditions at the crack tip. In heterogeneous materials, microscale obstacles can cause propagation instabilities. Macroscopic heterogeneities modify…Sri Savya Tanikella, Marie C Sigallon, Emilie Dressaire·Jul 14, 2024SaveLearn
Turbulence and Rossby Wave Dynamics with Realizable Eddy Damped Markovian Anisotropic ClosureThe theoretical basis for the Eddy Damped Markovian Anisotropic Closure (EDMAC) is formulated for two-dimensional anisotropic turbulence interacting with Rossby waves in the presence of advection by…Jorgen S. Frederiksen, Terence J. O'Kane·Jul 14, 2024SaveLearn
Non-uniform mesh based FDM simulation of lid-driven cavity problem governed by N-S equations in stream function-vorticity formulationIn this paper, the driven cavity problem was solved using finite difference scheme in stream function-vorticity formulation. A variable grid is adopted to capture more details and information in the…Zirui Mao·Jul 14, 2024SaveLearn
Predictability of weakly turbulent systems from spatially sparse observations using data assimilation and machine learningWe apply two data assimilation (DA) methods, a smoother and a filter, and a model-free machine learning (ML) shallow network to forecast two weakly turbulent systems. We analyse the effect of the…Vikrant Gupta, Yuanqing Chen, Minping Wan·Jul 14, 2024SaveLearn
Statistical Dynamics and Subgrid Modelling of Turbulence: From Isotropic to InhomogeneousTurbulence is the most important, ubiquitous, and difficult problem of classical physics. Feynman viewed it as essentially unsolved, without a rigorous mathematical basis to describe the statistical…Jorgen S. Frederiksen, Vassili Kitsios, Terence J. O'Kane·Jul 14, 2024SaveLearn
A Momentum Balance Correction to the Non-Conservative One-Fluid Formulation in Boiling Flows using Volume-of-FluidA proven methodology to solve multiphase flows is based on the one-fluid formulation of the governing equations, which treats the phase transition across the interface as a single fluid with varying…Jordi Poblador-Ibanez, Nicolas Valle, Bendiks Jan Boersma·Jul 13, 2024SaveLearn
Neural Operator-Based Proxy for Reservoir Simulations Considering Varying Well Settings, Locations, and Permeability FieldsSimulating Darcy flows in porous media is fundamental to understand the future flow behavior of fluids in hydrocarbon and carbon storage reservoirs. Geological models of reservoirs are often…Daniel Badawi, Eduardo Gildin·Jul 13, 2024SaveLearn
Wind-farm power prediction using a turbulence-optimized Gaussian wake modelIn this study, we present an improved formulation for the wake-added turbulence to enhance the accuracy of intra-farm and farm-to-farm wake modeling through analytical frameworks. Our goal is to…Navid Zehtabiyan-Rezaie, Josephine Perto Justsen, Mahdi Abkar·Jul 12, 2024SaveLearn
Tensor networks enable the calculation of turbulence probability distributionsPredicting the dynamics of turbulent fluid flows has long been a central goal of science and engineering. Yet, even with modern computing technology, accurate simulation of all but the simplest…Nikita Gourianov, Peyman Givi, Dieter Jaksch et al.·Jul 12, 2024SaveLearn
Quantum-inspired information entropy in multi-field turbulenceA novel information entropy of turbulence systems with multiple field quantities is formulated. Inspired by quantum mechanics, the von Neumann entropy (vNE) and the entanglement entropy(EE) are…Go Yatomi, Motoki Nakata·Jul 12, 2024SaveLearn
Velocity gradient partitioning in turbulent flowsThe velocity gradient tensor can be decomposed into normal straining, pure shearing and rigid rotation tensors, each with distinct symmetry and normality properties. We partition the strength of…Rahul Arun, Tim Colonius·Jul 12, 2024SaveLearn
Coherent Organization of Passive Scalar from a Point-Source in a Turbulent Boundary LayerThe spatial organization of a passive scalar plume originating from a point source in a turbulent boundary layer is studied to understand its meandering characteristics. We focus shortly downstream…Isaiah E. Wall, Gokul Pathikonda·Jul 11, 2024SaveLearn
Machine learning for hydrodynamic stabilityA machine-learning strategy for investigating the stability of fluid flow problems is proposed herein. The goal is to provide a simple yet robust methodology to find a nonlinear mapping from the…David J. Silvester·Jul 11, 2024SaveLearn
Viscoelastic model hierarchy for fiber melt spinning of semi-crystalline polymersIn the fiber melt spinning of semi-crystalline polymers, the degree of crystallization can be non-homogeneous over the cross-section of the fiber, affecting the properties of the end product. For…Manuel Ettmüller, Walter Arne, Nicole Marheineke et al.·Jul 11, 2024SaveLearn
Flame spread over thin circular PMMA rodsIn the present article, series of opposed flow, downward flame spread experiments are conducted using 80 mm long cast PMMA cylinders of 1 mm and 0.5 mm diameters at normal and micro gravity…Manu B, Amit Kumar·Jul 11, 2024SaveLearn