On the Drag Coefficient Universality of a Rough Grain in Creeping FlowControversy exists regarding whether grain morphology reduces or enhances the drag of a single grain in creeping flows; further complication occurs when orientation dependence for aspherical grains…Si Suo, Deheng Wei, Budi Zhao et al.·Nov 12, 2024SaveLearn
Leidenfrost drop dynamics: An approach to follow the complete evolutionA new model to follow the complete evolution of a drop in Leidenfrost state is presented in this work. The main ingredients of the phenomenon were considered, including: 1) the shape and weight of a…René Ledesma-Alonso, Benjamin Lalanne, Jesús Israel Morán-Cortés et al.·Nov 12, 2024SaveLearn
Physics-Informed Neural Networks with Complementary Soft and Hard Constraints for Solving Complex Boundary Navier-Stokes EquationsSoft- and hard-constrained Physics Informed Neural Networks (PINNs) have achieved great success in solving partial differential equations (PDEs). However, these methods still face great challenges…Chuyu Zhou, Tianyu Li, Chenxi Lan et al.·Nov 12, 2024SaveLearn
Modeling and scaling spontaneous imbibition with generalized fractional flow theory and non-Boltzmann transformationSpontaneous imbibition (SI) is a process by which liquid is drawn into partially saturated porous media by capillary forces, relevant for subsurface processes like underground fluid storage and…Shaluka Senevirathna, Anna Zemlyanova, Shaina A. Kelly et al.·Nov 12, 2024SaveLearn
Numerical Simulations of Geomechanical Deformation, Fluid Flow and Reactive Transport in Shale Rough-Walled MicrofracturesImproving hydrocarbon production with hydraulic fracturing from unconventional reservoirs requires investigating transport phenomena at the single fracture level. In this study, we simulated…Morteza Heydari, Feng Liang, Hui-Hai Liu et al.·Nov 12, 2024SaveLearn
Stabilization of the Rayleigh-B\'enard system by injection of thermal inertial particles and bubblesThe effects of a dispersed particulate phase on the onset of Rayleigh-B\'enard convection in a fluid layer is studied theoretically by means of a two-fluid Eulerian modelization. The particles are…Saad Raza, Silvia C. Hirata, Enrico Calzavarini·Nov 12, 2024SaveLearn
A low-dissipation numerical method based on boundary variation diminishing principle for compressible gas-liquid two-phase flows with phase change on unstructured gridA low-dissipation numerical method for compressible gas-liquid two-phase flow with phase change on unstructured grids is proposed. The governing equations adopt the six-equation model. The…Hiro Wakimura, Takayuki Aoki, Feng Xiao·Nov 12, 2024SaveLearn
Differentially heated turbulent channel flow two-point correlationsThis study analyzes the behavior of a differentially heated channel flow by means of a direct numerical simulations (DNS) with variable thermophysical properties under low-speed conditions focusing…Marina Garcia-Berenguer, Lucas Gasparino, Oriol Lehmkuhl et al.·Nov 12, 2024SaveLearn
KH-PINN: Physics-informed neural networks for Kelvin-Helmholtz instability with spatiotemporal and magnitude multiscalePrediction of Kelvin-Helmholtz instability (KHI) is crucial across various fields, requiring extensive high-fidelity data. However, experimental data are often sparse and noisy, while simulated data…Jiahao Wu, Yuxin Wu, Xin Li et al.·Nov 12, 2024SaveLearn
Improved Greedy Identification of Latent Dynamics with Application to Fluid FlowsModel reduction is a key technology for large-scale physical systems in science and engineering, as it brings behavior expressed in many degrees of freedom to a more manageable size that subsequently…R. Ayoub, M. Oulghelou, P. J Schmid·Nov 11, 2024SaveLearn
Energy and entropy conserving compatible finite elements with upwinding for the thermal shallow water equationsIn this work, we develop a new compatible finite element formulation of the thermal shallow water equations that conserves energy and mathematical entropies given by buoyancy-related quadratic tracer…Tamara A. Tambyah, David Lee, Santiago Badia·Nov 11, 2024SaveLearn
New Higher-Order Super-Compact Finite Difference Scheme to Study Three-Dimensional Natural Convection and Entropy Generation in Non-Newtonian FluidsThis work introduces a new higher-order super-compact (HOSC) implicit finite difference scheme for analyzing three-dimensional (3D) natural convection and entropy generation in non-Newtonian fluids.…Ashwani Punia, Rajendra K. Ray·Nov 10, 2024SaveLearn
Routes to stratified turbulence and temporal intermittency revealed by a cluster-based network model of experimental dataModelling fluid turbulence using a `skeleton' of coherent structures has traditionally progressed by focusing on a few canonical laboratory experiments such as pipe flow and Taylor-Couette flow. We…Adrien Lefauve, Yui Hin Marvil Cheung, Xianyang Jiang et al.·Nov 10, 2024SaveLearn
Effects of confinement, impinging shock deflection angle, and Mach number on the flow field of a supersonic open cavityCavities exhibit inherent self-sustaining oscillations driven by the coupling between their hydrodynamic and acoustic properties. In practical applications, cavities are often placed within…Sreejita Bhaduri, Mohammed Ibrahim Sugarno, Ashoke De·Nov 10, 2024SaveLearn
A conservative degree adaptive HDG method for transient incompressible flowsPurpose: This study aims to assess the accuracy of degree adaptive strategies in the context of incompressible Navier-Stokes flows using the high order hybridisable discontinuous Galerkin (HDG)…Agustina Felipe, Ruben Sevilla, Oubay Hassan·Nov 10, 2024SaveLearn
Influence of three-dimensionality on wake synchronization of oscillatory cylinderWe investigate the effect of three-dimensionality on the synchronization characteristics of the wake behind an oscillating circular cylinder at Re = 300. Cylinder oscillations in rotation, transverse…Youngjae Kim, Vedasri Godavarthi, Laura Victoria Rolandi et al.·Nov 9, 2024SaveLearn
Flow Dynamics of the Transversely Oscillating Tapered Circular Cylinder under Vortex-Induced Vibrations at low Reynolds numberThis study numerically investigates the influence of the taper on the flow-induced vibrations of an elastically mounted circular cylinder under Vortex-induced vibrations. The dynamic response of…Mayank Verma, Ashoke De·Nov 9, 2024SaveLearn
An experimental and numerical study on the behavior of finite-length column vortexThis paper explores experimental and numerical investigation of the spatio-temporal dynamics of a finite-length vortex column in three dimensions using Particle Image Velocimetry (PIV) and Large Eddy…Swetarka Das, Dharmendra Yadav, Abhisek Kumar Gupta et al.·Nov 9, 2024SaveLearn
Characterizing 3D Reattached Flow on an Airfoil with Finite-Span Synthetic JetsThis paper synthesizes prior studies to develop a comprehensive three-dimensional description of reattached flow over an airfoil controlled by finite-span SJA arrays. When applied to a longer-span…Adnan Machado, Pierre E. Sullivan·Nov 8, 2024SaveLearn
How vortices enhance heat transfer from an oscillating plateOscillations of a heated solid surface in an oncoming fluid flow can increase heat transfer from the solid to the fluid. Previous studies have investigated the resulting heat transfer enhancement for…Xiaojia Wang, Silas Alben·Nov 8, 2024SaveLearn
The Footprint of Laminar Separation on a Wall-Bounded Wing Section at Transitional Reynolds NumbersWhen a chordwise Reynolds number (Re) falls below about 105 the performance of wings and aerodynamic sections become sensitive to viscous phenomena, including boundary layer separation and…Charles Klewicki, Bjoern F. Klose, Gustaaf B. Jacobs et al.·Nov 8, 2024SaveLearn
Advantages of the adoption of a generalized flame displacement velocity as a central element of flamelet theoryIn combustion theory, flames are usually described in terms of the dynamics of iso-surfaces of a specific scalar. The flame displacement speed is then introduced as a local variable quantifying the…Hernan Olguin, Pascale Domingo, Luc Vervisch et al.·Nov 8, 2024SaveLearn
Comprehensive Study on the Slat Noise of 30P30N High-Lift Airfoil Basd on High-Order Wall-Resolved Large-Eddy SimulationThis study presents wall-resolved large-eddy simulations (WRLES) of a high-lift airfoil, based on high-order flux reconstruction (FR) commercial software Dimaxer, which runs on consumer level GPUs. A…Keli Zhang, Shizhi Lin, Peiqing Liu et al.·Nov 8, 2024SaveLearn
The Impact of Stratification on Surface-Intensified Eastward Jets in Turbulent GyresThis study examines the role of stratification in the formation and persistence of eastward jets (like the Gulf Stream and Kuroshio currents). Using a wind-driven, two-layer quasi-geostrophic model…Lennard Miller, Bruno Deremble, Antoine Venaille·Nov 8, 2024SaveLearn
Adaptive Dissipation in the Smagorinsky Model for Turbulence in Boundary-Driven FlowsThis paper enhances the classic Smagorinsky model by introducing an innovative, adaptive dissipation term that adjusts dynamically with distance from boundary regions. This modification addresses a…Rômulo Damasclin Chaves dos Santos, Jorge Henrique de Oliveira Sales·Nov 8, 2024SaveLearn