Finite-size inertial spherical particles in turbulenceWe investigate by direct numerical simulations the fluid-solid interaction of non-dilute suspensions of spherical particles moving in triperiodic turbulence, at the relatively large Reynolds number…Alessandro Chiarini, Marco Edoardo Rosti·Apr 25, 2024SaveLearn
A quantitative theory for heterogeneous combustion of nonvolatile metal particles in the diffusion-limited regimeThe paper presents an analytical theory quantitatively describing the heterogeneous combustion of nonvolatile (metal) particles in the diffusion-limited regime. It is assumed that the particle is…Daoguan Ning, Andreas Dreizler·Apr 25, 2024SaveLearn
Spanwise Control Authority of Synthetic Jets on a Stalled AirfoilThis study investigates the aerodynamic effects of low- and high-frequency synthetic jet control strategies on a National Advisory Committee for Aeronautics (NACA) 0025 airfoil. Visualizations and…Adnan Machado, Kecheng Xu, Pierre E. Sullivan·Apr 24, 2024SaveLearn
Machine-Learned Closure of URANS for Stably Stratified Turbulence: Connecting Physical Timescales & Data Hyperparameters of Deep Time-Series ModelsWe develop time-series machine learning (ML) methods for closure modeling of the Unsteady Reynolds Averaged Navier Stokes (URANS) equations applied to stably stratified turbulence (SST). SST is…Muralikrishnan Gopalakrishnan Meena, Demetri Liousas, Andrew D. Simin et al.·Apr 24, 2024SaveLearn
Implementation of Immersed Boundaries via Volume Penalization in the Industrial Aeronautical Computational Fluid Dynamics Solver CODAWe present the implementation and validation of an immersed boundary volume penalization method in the computational fluid dynamics solver CODA (from ONERA, DLR, and Airbus). Our goal is to model and…Jonatan Nunez, David Huergo, Diego Lodares et al.·Apr 24, 2024SaveLearn
Homogeneous turbophoresis of heavy inertial particles in turbulent flowHeavy particles suspended in turbulent flow possess inertia and are ejected from violent vortical structures by centrifugal forces. Once piled up along particle paths, this small-scale mechanism…Jérémie Bec, Robin Vallée·Apr 24, 2024SaveLearn
A Unified Framework for Total Variation Regularized Optimization in Fluid Dynamics and Related Physical SystemsAn optimization framework is presented for minimizing the energy functional developed around a generalized equation governing physical systems such as fluid dynamics, particle transport, phase…Varsha Gupta·Apr 23, 2024SaveLearn
Numerical study of transitions in lid-driven flows in semicircular cavitiesIn this article, three-dimensional (3D) lid-driven flows in semicircular cavities are studied. The numerical solution of the Navier-Stokes equations modeling incompressible viscous fluid flow in…Tsorng-Whay Pan, Ang Li, Shang-Huan Chiu·Apr 23, 2024SaveLearn
Self-similarity and recurrence in stability spectra of near-extreme Stokes wavesWe consider steady surface waves in an infinitely deep two--dimensional ideal fluid with potential flow, focusing on high-amplitude waves near the steepest wave with a 120 degree corner at the crest.…Bernard Deconinck, Sergey A. Dyachenko, Anastassiya Semenova·Apr 23, 2024SaveLearn
Wall Shear Stress Generated by a Bernoulli Pad: Experiments and Numerical SimulationsBernoulli pads generate locally large wall shear stresses on workpieces, which can be used for cleaning, but may also damage delicate surfaces. This work presents direct measurements of the wall…Anshul S. Tomar, Shaede Perzanowski, Ricardo Mejia-Alvarez et al.·Apr 23, 2024SaveLearn
Momentum deficit and wake-added turbulence kinetic energy budgets in the stratified atmospheric boundary layerTo achieve decarbonization targets, wind turbines are growing in hub height, rotor diameter, and are being deployed in new locations with diverse atmospheric conditions not previously seen, such as…Kerry S. Klemmer, Michael F. Howland·Apr 23, 2024SaveLearn
Analytical prediction for the steady-state behavior of a confined drop with interface viscosity under shear flowThe steady-state behavior of a single drop under shear flow has been extensively investigated in the limit of small deformation and negligible inertia effects. In this work, we combine the…Fabio Guglietta, Francesca Pelusi·Apr 23, 2024SaveLearn
Revisiting Crossflow-Based Stabilization in Channel FlowsStabilization schemes in wall-bounded flows often invoke fluid transpiration through porous boundaries. While these have been extensively validated for external flows, their efficacy in channels,…Muhammad Abdullah, George Ilhwan Park·Apr 23, 2024SaveLearn
Droplet impact behavior on a hydrophobic plate with a wettability-patterned orificeDroplet impact behavior has attracted much attention recently due to its academic significance and diverse industrial applications. This study employs the lattice Boltzmann method to simulate the…Juanyong Wang, Lei Wang, Jiangxu Huang et al.·Apr 23, 2024SaveLearn
A Non-staggered Projection Algorithm for Two-Phase Fluid-Structure Interaction Simulation Using the Phase-Field/Immersed-Boundary MethodWe present a Pressure-Oscillation-Free projection algorithm for large-density-ratio multiphase fluid-structure interaction simulations, implemented on a non-staggered Cartesian grid. The…Xiaoshuang Wang, Liwei Tan, Wenjun Ying et al.·Apr 23, 2024SaveLearn
Effect of structural parameters on the synchronization characteristics in a stall-induced aeroelastic systemThis study focuses on discerning the role of structural parameters on the bifurcation characteristics and the underlying synchronization mechanism in an aeroelastic system undergoing nonlinear stall…Dheeraj Tripathi, Chandan Bose, Sirshendu Mondal et al.·Apr 22, 2024SaveLearn
Machine Learning in Viscoelastic Fluids via Energy-Based Kernel EmbeddingThe ability to measure differences in collected data is of fundamental importance for quantitative science and machine learning, motivating the establishment of metrics grounded in physical…Samuel E. Otto, Cassio M. Oishi, Fabio Amaral et al.·Apr 22, 2024SaveLearn
Cross-validation of meshless Navier-Stokes solvers in porous media flowsIn this paper, two mesh-free CFD solvers for pore-scale fluid flow through porous media are considered, namely the Lattice Boltzmann Method with the two relaxation time collision term and the direct…Dawid Strzelczyk, Miha Rot, Gregor Kosec et al.·Apr 22, 2024SaveLearn
The effects of turbulence modeling on dynamic stallA numerical investigation of the flow evolution over a pitching NACA 0012 airfoil incurring in deep dynamic stall phenomena is presented. The experimental data at Reynolds number Re = 135 000 and…Giacomo Baldan, Francesco Manara, Gregorio Frassoldati et al.·Apr 22, 2024SaveLearn
Prediction of flow and elastic stresses in a viscoelastic turbulent channel flow using convolutional neural networksNeural-network models have been employed to predict the instantaneous flow close to the wall in a viscoelastic turbulent channel flow. Numerical simulation data at the wall is utilized to predict the…Arivazhagan G. Balasubramanian, Ricardo Vinuesa, Outi Tammisola·Apr 22, 2024SaveLearn
Pressure gain combustion for gas turbines: Analysis of a fully coupled engine modelThe ``Shockless Explosion Combustion" (SEC) concept for gas turbine combustors, introduced in 2014, approximates constant volume combustion (CVC) by harnessing acoustic confinement of autoigniting…Rupert Klein, Maikel Nadolski, Christian Zenker et al.·Apr 22, 2024SaveLearn
Marangoni Interfacial Instability Induced by Solute Transfer Across Liquid-Liquid InterfacesThis study presents analytical and numerical investigations of Marangoni interfacial instability in a two-liquid-layer system with constant solute transfer across the interface. While previous…Xiangwei Li, Dongdong Wan, Mengqi Zhang et al.·Apr 21, 2024SaveLearn
Optimal Feeding of Swimming and Attached CiliatesCiliated microorganisms near the base of the aquatic food chain either swim to encounter prey or attach at a substrate and generate feeding currents to capture passing particles. Here, we represent…Jingyi Liu, Yi Man, John H. Costello et al.·Apr 20, 2024SaveLearn
On the Effect of Liquid Crystal Orientation in the Lipid Layer on Tear Film Thinning and BreakupThe human tear film (TF) is thin multilayer fluid film that is critical for clear vision and ocular surface health. Its dynamics are strongly affected by a floating lipid layer and, in health, that…M. J. Taranchuk, R. J. Braun·Apr 20, 2024SaveLearn
Group cohesion and passive dynamics of a pair of inertial swimmers with three-dimensional hydrodynamic interactionsWhen swimming animals form cohesive groups, they can reap several benefits. Our understanding of collective animal motion has traditionally been driven by models based on phenomenological behavioral…Mohamed Niged Mabrouk, Daniel Floryan·Apr 19, 2024SaveLearn