Modeling Hydraulic Fracture Entering Stress Barrier: Theory and Practical RecommendationsNumerical modeling of hydraulic fracturing is complicated when a fracture reaches a stress barrier. For high barriers, it may require changing of a computational scheme. Despite there are examples of…Aleksandr Linkov, Liliana Rybarska-Rusinek, Ewa Rejwer-Kosińska·Jul 11, 2024SaveLearn
Many wrong models approach to localize an odor source in turbulence with static sensorsThe problem of locating an odor source in turbulent flows is central to key applications such as environmental monitoring and disaster response. We address this challenge by designing an algorithm…Lorenzo Piro, Robin A. Heinonen, Massimo Cencini et al.·Jul 11, 2024SaveLearn
Force-dependence of the rigid-body motion for an arbitrarily shaped particle in a forced, incompressible Stokes flowWhen a particle moves in a Newtonian flow at low Reynolds number, inertia is irrelevant and a linear relationship exists between velocities and forces. For incompressible flows, any force…Alvaro Domínguez, Mihail N. Popescu·Jul 11, 2024SaveLearn
Optimal Sparsity in Nonlinear Non-Parametric Reduced Order Models for Transonic Aeroelastic SystemsMachine learning and artificial intelligence algorithms typically require large amount of data for training. This means that for nonlinear aeroelastic applications, where small training budgets are…Michael Candon, Errol Hale, Maciej Balajewicz et al.·Jul 11, 2024SaveLearn
Practical deviational particle method for variance reduction in polyatomic gas DSMC simulationsThe direct simulation Monte Carlo (DSMC) method is a widely used stochastic particle approach to solving the Boltzmann equation. However, its computational cost remains a major drawback, which can be…Takehiro Shiraishi, Ikuya Kinefuchi·Jul 11, 2024SaveLearn
Identifying feedback directions in the mechanisms driving self-sustained thermoacoustic instability in a single-element rocket combustorThe occurrence of high frequency (>1000 Hz) thermoacoustic instability (TAI) sustained by mutual feedback among the acoustic field, heat release rate oscillations, and hydrodynamic oscillations poses…Somnath De, Praveen Kasthuri, Matthew E. Harvazinski et al.·Jul 10, 2024SaveLearn
Soft CondensationWhen moist air meets a cold surface, it creates a breath figure characterized by numerous small droplets. The central question is how the vapor flux is distributed between the growth of previously…Ambre Bouillant, Christopher Henkel, Uwe Thiele et al.·Jul 10, 2024SaveLearn
Collective Effects in Breath FiguresBreath figures are the complex patterns that form when water vapor condenses into liquid droplets on a surface. The primary question concerning breath figures is how the condensing vapor is allocated…Ambre Bouillant, Jacco H. Snoeijer, Bruno Andreotti·Jul 10, 2024SaveLearn
Cross-flow oscillations of a circular cylinder with mechanically coupled rotationFlow-Induced Vibrations (FIV) of an elastically mounted circular cylinder are investigated by means of two-dimensional simulations. A mechanical coupling between cross-flow translation and rotation…Alessandro Nitti, Giovanni De Cillis, Marco . D. de Tullio·Jul 10, 2024SaveLearn
Buoyancy driven motion of non-coalescing inertial drops: microstructure modeling with nearest particle statisticsIn this study, we analyze the various arrangements that droplets can form within dispersed buoyant emulsions, which we refer to as the study of microstructure. To this end, we have developed a novel…Nicolas Fintzi, Jean-Lou Pierson, Stéphane Popinet·Jul 10, 2024SaveLearn
Asymmetric Fluid Flow in Helical Pipes Inspired by Shark IntestinesUnlike human intestines, which are long, hollow tubes, the intestines of sharks and rays contain interior helical structures surrounding a cylindrical hole. One function of these structures may be to…Ido Levin, Naroa Sadaba, Alshakim Nelson et al.·Jul 10, 2024SaveLearn
Flow-acoustic resonance in deep and inclined cavitiesThis paper presents numerical investigations of flow-acoustic resonances in deep and inclined cavities using wall-resolved large-eddy simulations. A cavity with D/L = 2.632 is subjected to…You Wei Ho, Jae Wook Kim·Jul 10, 2024SaveLearn
Pressure drop reduction due to coupling between shear-thinning fluid flow and a weakly deformable channel wall: A reciprocal theorem approachWe employ the Lorentz reciprocal theorem to derive a closed-form expression for the pressure drop reduction due to the coupling between shear-thinning fluid flow and a weakly deformable channel wall…Shrihari D. Pande, Ivan C. Christov·Jul 9, 2024SaveLearn
Studies of Transonic Aircraft Flows and Prediction of Initial Buffet Onset Using Large-Eddy SimulationsThis article utilizes the Large-Eddy Simulation (LES) paradigm with a physics-based turbulence modeling approach, including a dynamic subgrid-scale model and an equilibrium wall model, to examine the…Konrad A. Goc, Rahul Agrawal, Sanjeeb T. Bose et al.·Jul 9, 2024SaveLearn
Loss of Axial Symmetry in Hypersonic Flows over Conical ShapesThe assumption of axial symmetry for hypersonic flows over conically shaped geometries is ubiquitous in both experiments and numerical simulations. Yet depending on the free stream conditions, many…Irmak T. Karpuzcu, Deborah A. Levin·Jul 9, 2024SaveLearn
A survey on isothermal and isentropic Baer-Nunziato-type modelsMulti-component Baer-Nunziato-type models for isothermal and isentropic fluids are investigated. These are given by balance equations for volume fractions, density and momentum for each component…Maren Hantke, Siegfried Müller, Aleksey Sikstel et al.·Jul 9, 2024SaveLearn
Resolvent analysis of a swimming foilThis study employs resolvent analysis to explore the dynamics and coherent structures in the boundary layer of a foil that swims via a travelling wave undulation. A modified NACA foil shape is used…Jonathan M. O. Massey, Sean Symon, Bharathram Ganapathisubramani et al.·Jul 9, 2024SaveLearn
On the fractal dimension of non-Newtonian Hele-Shaw flow subject to Saffman-Taylor instabilityWe introduce a discrete numerical method based on the diffusion-limited aggregation (DLA) approach to simulate two-fluid Hele-Shaw flow subject to the Saffman-Taylor interfacial instability, in the…J. Adriazola, B. Gu, L. Cummings et al.·Jul 9, 2024SaveLearn
An aeroacoustic mechanism to explain universal behavior in hypersonic wake flow oscillationsRecent experimental studies reveal that the near-wake region of a circular cylinder at hypersonic Mach numbers exhibits self-sustained flow oscillations. The oscillation frequency was found to have a…Premika S. Thasu, Gaurav Kumar, Subrahmanyam Duvvuri·Jul 8, 2024SaveLearn
Dynamics of quantum turbulence in axially rotating thermal counterflowGeneration, statistically steady state, and temporal decay of axially rotating thermal counterflow of superfluid 4He (He~II) in a square channel is probed using the second sound attenuation…Ritesh Dwivedi, Tomáš Dunca, Filip Novotný et al.·Jul 8, 2024SaveLearn
Micro Plasma Actuator Location Effect on Complex Fluidic Behavior: An Optimization StudyThis study employs optimization techniques to enhance the positioning of a dielectric-barrier-discharge plasma actuator on a curved surface, taking into account diverse aerodynamic and physical…Javad Omidi·Jul 8, 2024SaveLearn
The vertical-velocity skewness in the inertial sublayer of turbulent wall flowsWe provide empirical evidence that within the inertial sub layer of adiabatic turbulent flows over smooth walls, the skewness of the vertical velocity component Skw displays universal behaviour,…Elia Buono, Gabriel Katul, Michael Heisel et al.·Jul 8, 2024SaveLearn
A consistent, volume preserving, and adaptive mesh refinement-based framework for modeling non-isothermal gas-liquid-solid flows with phase changeThis work expands on our recently introduced low Mach enthalpy method [1] for simulating the melting and solidification of a phase change material (PCM) alongside (or without) an ambient gas phase.…Ramakrishnan Thirumalaisamy, Amneet Pal Singh Bhalla·Jul 8, 2024SaveLearn
Shear-Layer Perturbation Responses from Time-Resolved Schlieren DataA novel combination of physics-based and data-driven post-processing techniques is proposed to extract acoustic-related shear-layer perturbation responses directly from spatio-temporally resolved…Spencer L. Stahl, Chandan Kumar, Datta V. Gaitonde·Jul 7, 2024SaveLearn
Three-dimensional diffusive-thermal instability of flames propagating in a plane Poiseuille flowThe three-dimensional diffusive-thermal stability of a two-dimensional flame propagating in a Poiseuille flow is examined. The study explores the effect of three non-dimensional parameters, namely…Aiden Kelly, Prabakaran Rajamanickam, Joel Daou et al.·Jul 7, 2024SaveLearn