Using LSTM Predictions for RANS SimulationsThis study constitutes the second phase of a research endeavor aimed at evaluating the feasibility of employing Long Short-Term Memory (LSTM) neural networks as a replacement for Reynolds-Averaged…Hugo D. Pasinato·Nov 18, 2024SaveLearn
A new paradigm for wall-modeled large eddy simulations using the volume-filtering frameworkIn the present paper, we apply the framework of volume-filtering for particle-laden flows, to large eddy simulations (LES) of wall-bounded flows leading to a new perspective on wall-modeled LES…Max Hausmann, Berend van Wachem·Nov 18, 2024SaveLearn
Generalized Treatment of Energy Accommodation in Gas-Surface Interactions for Satellite Aerodynamics ApplicationsIn the context of satellite aerodynamics in the Very-Low-Earth-Orbit (VLEO) regime, accurate modeling of gas-surface interactions (GSI) is crucial for determining aerodynamic forces and torques.…Friedrich Tuttas, Constantin Traub, Marcel Pfeiffer et al.·Nov 18, 2024SaveLearn
Dynamical regimes of thermally convective emulsionsEmulsions are paramount in various interdisciplinary topical areas, yet a satisfactory understanding of their behavior in buoyancy-driven thermal flows has not been established. In the present work,…Francesca Pelusi, Andrea Scagliarini, Mauro Sbragaglia et al.·Nov 18, 2024SaveLearn
Fake it till you make it: using artificial turbulence to achieve swift converged turbulence statistics in a pressure-driven channel flowIn this study, we introduced a simple yet innovative method to trigger turbulence in a channel flow to achieve statistically stationary flow conditions. We compare this new method based on…Akshay Patil, Clara García-Sánchez·Nov 18, 2024SaveLearn
Modeling Multivariable High-resolution 3D Urban Microclimate Using Localized Fourier Neural OperatorAccurate urban microclimate analysis with wind velocity and temperature is vital for energy-efficient urban planning, supporting carbon reduction, enhancing public health and comfort, and advancing…Shaoxiang Qin, Dongxue Zhan, Dingyang Geng et al.·Nov 18, 2024SaveLearn
Coupled Integral PINN for DiscontinuityPhysics-Informed Neural Networks (PINNs) solve forward PDEs by minimizing residual losses from the governing equations with initial and boundary conditions, but they often struggle with…Yeping Wang, Shihao Yang·Nov 18, 2024SaveLearn
Diffusivity-Free Turbulence in Liquid Metal Rotating Rayleigh-B\'enard Convection ExperimentsConvection in planets and stars is predicted to occur in the "ultimate regime'' of diffusivity-free, rapidly rotating turbulence, in which flows are characteristically unaffected by viscous and…Jewel A. Abbate, Yufan Xu, Tobias Vogt et al.·Nov 18, 2024SaveLearn
Collective Behavior of Clusters of Free-to-Move Cylinders in the Wake of a Fixed CylinderWe study the collective behavior of clusters of cylinders placed in the wake of a fixed cylinder and free to move in a direction perpendicular to that of the incoming flow, with no structural damping…Daniela Caraeni, Yahya Modarres-Sadeghi·Nov 17, 2024SaveLearn
The initial acceleration of a buoyant spherical bubble revisitedAn analytical derivation of the buoyancy-induced initial acceleration of a spherical gas bubble in a host liquid is presented. The theory makes no assumptions further than applying the two-phase…Dieter Bothe, Jun Liu, Pierre-Etienne Druet et al.·Nov 16, 2024SaveLearn
A consistent treatment of dynamic contact angles in the sharp-interface framework with the generalized Navier boundary conditionIn this work, we revisit the Generalized Navier Boundary condition (GNBC) introduced by Qian et al.\ in the sharp interface Volume-of-Fluid context. We replace the singular uncompensated Young stress…Tomas Fullana, Yash Kulkarni, Mathis Fricke et al.·Nov 16, 2024SaveLearn
Experimental study of fish-like bodies with passive tail and tunable stiffnessScombrid fishes and tuna are efficient swimmers capable of maximizing performance to escape predators and save energy during long journeys. A key aspect in achieving these goals is the flexibility of…L. Padovani, G. Manduca, D. Paniccia et al.·Nov 16, 2024SaveLearn
Constructing the body source for high-order lattice Boltzmann methodThis paper presents a novel strategy for constructing body source terms in the high-order lattice Boltzmann method (LBM), designed to efficiently introduce various physical phenomena by modifying the…Shunyang Li, Li Wan, Nan Gui et al.·Nov 16, 2024SaveLearn
Generic equations for long gravity waves in incompressible fluid with finite amplitudeWe present the derivation of generic equations describing the long gravity waves in incompressible fluid with decaying effect. We show that in this theory the only restriction to the surface…Vladimir I. Kruglov·Nov 16, 2024SaveLearn
Theoretical Refinements of the Smagorinsky Model for Turbulence SimulationsThis paper presents a rigorous theoretical extension of the Smagorinsky model for turbulence simulations. The author builds on its fundamental framework, addressing known limitations, and making new…Rômulo Damasclin Chaves dos Santos·Nov 15, 2024SaveLearn
Spinning Twisted Ribbons: When Two Holes Meet on a Curved Liquid FilmThe rupture of a liquid film, where a thin liquid layer between two other fluids breaks and forms holes, commonly occurs in both natural phenomena and industrial applications. The post-rupture…Jack H. Y. Lo, Yuan Liu, Tariq Alghamdi et al.·Nov 15, 2024SaveLearn
Soliton Dynamics over a Disordered TopographyWe report on the dynamics of a soliton propagating on the surface of a fluid in a 4-m-long canal with a random or periodic bottom topography. Using a full space-and-time resolved wavefield…Guillaume Ricard, Eric Falcon·Nov 15, 2024SaveLearn
Compressible turbulent convection at very high Rayleigh numbersHeat transport in highly turbulent convection is not well understood. In this paper, we simulate compressible convection in a box of aspect ratio 4 using computationally-efficient MacCormack-TVD…Harshit Tiwari, Lekha Sharma, Mahendra K. Verma·Nov 15, 2024SaveLearn
A Hamiltonian set-up for 4-layer density stratified Euler fluidsBy means of the Hamiltonian approach to two-dimensional wave motions in heterogeneous fluids proposed by Benjamin, we derive a natural Hamiltonian structure for ideal fluids, density stratified in…R. Camassa, G. Falqui, G. Ortenzi et al.·Nov 15, 2024SaveLearn
Turbulent pipe flow with spherical particles: drag as a function of particle size and volume fractionSuspensions of finite-size solid particles in a turbulent pipe flow are found in many industrial and technical flows. Due to the ample parameter space consisting of particle size, concentration,…Martin Leskovec, Sagar Zade, Mehdi Niazi et al.·Nov 15, 2024SaveLearn
On the solutions of a factorized wave equationLong-distance transmission of energy by waves is a key mechanism for many natural processes. It becomes possible when the inhomogeneous medium is arranged in such a manner that it enables a specific…Semyon Churilov·Nov 15, 2024SaveLearn
A Study of Spherical and Sessile Droplet Dynamics by Fluctuating HydrodynamicsWe simulate the mesoscopic dynamics of droplets formed by phase separated fluids at nanometer scales where thermal fluctuations are significant. Both spherical droplets fully immersed in a second…John B. Bell, Andrew Nonaka, Alejandro L. Garcia·Nov 15, 2024SaveLearn
New Higher-Order Super-Compact Scheme for Enhanced Three-Dimensional Heat Transfer with Nanofluid and Conducting FinsThis study presents a new higher-order super-compact (HOSC) finite difference scheme for analyzing enhanced heat transfer of three-dimensional (3D) nanofluid natural convection in a cubic cavity. The…Ashwani Punia, Rajendra K. Ray·Nov 14, 2024SaveLearn
Forces and grain-grain contacts in bidisperse beds sheared by viscous fluidsIn a recent paper (Gonzalez et al., 2023), we investigated the motion of grains within a granular bed sheared by a viscous fluid, and showed how segregation and hardening occur in the fluid-…Jaime Oswaldo Gonzalez Maya, Erick de Moraes Franklin·Nov 14, 2024SaveLearn
Study of the influence of instability wave scattering on the efficiency of jet noise shielding within the geometric theory of diffractionThe paper presents the results of a theoretical study of the noise shielding effect of a subsonic turbulent jet located near a rigid screen. The developed theoretical model, based on the methods of…O. P. Bychkov, S. A. Chernyshev, S. L. Denisov et al.·Nov 14, 2024SaveLearn