Role of Duty Cycle in Burst-Modulated Synthetic Jet Flow ControlThe effect of duty cycle (DC) and blowing ratio on synthetic jet flow control over a stalled NACA 0025 airfoil at Rec=105 was investigated experimentally. A finite-span microblower array operating…Adnan Machado, Ali Shirinzad, Kecheng Xu et al.·Oct 1, 2024SaveLearn
Random large eddy simulation for 3-dimensional incompressible viscous flowsWe develop a numerical method for simulation of incompressible viscous flows by integrating the technology of random vortex method with the core idea of Large Eddy Simulation (LES). Specifically, we…Zihao Guo, Zhongmin Qian·Oct 1, 2024SaveLearn
Three-dimensional simulation of film boiling on a horizontal surface with magnetic fieldThis study conducts a numerical investigation into the three-dimensional film boiling of liquid under the influence of external magnetic fields. The numerical method incorporates a sharp phase-change…Hao-Tao Gu, Kirti Chandra Sahu, Jie Zhang et al.·Oct 1, 2024SaveLearn
Strategies for energy-efficient flow control leveraging deep reinforcement learningThis study investigates active flow control in two-dimensional flows at a Reynolds number of 100 using Deep Reinforcement Learning (DRL). We utilize DRL to develop flow control strategies that…Wang Jia, Hang Xu·Oct 1, 2024SaveLearn
Vortex shedding suppression in elliptical cylinder via reinforcement learningFlow control of bluff bodies plays a critical role in engineering applications. In this study, deep reinforcement learning (DRL) is employed to develop flow control strategies for the flow past an…Wang Jia, Hang Xu·Oct 1, 2024SaveLearn
Investigation of shock-shock interaction in hypersonic rarefied flow using direct simulation Monte Carlo methodThe rarefied flows encountered by the hypersonic vehicles in their high-altitude flights call for investigations coupling the shock-shock interaction and the rarefied-gas effect. An in-house direct…Yazhong Jiang, Tianju Ma·Oct 1, 2024SaveLearn
A theoretical model for compressible bubble dynamics considering phase transition and migrationA novel theoretical model for bubble dynamics is established that simultaneously accounts for the liquid compressibility, phase transition, oscillation, migration, ambient flow field, etc. The bubble…A-Man Zhang, Shi-Min Li, Run-Ze Xu et al.·Oct 1, 2024SaveLearn
Turbulence suppression in plane Couette flow using reduced-order modelsWe explore a reduced-order model (ROM) of plane Couette flow with a view to performing turbulence control. The ROM is derived through Galerkin projections of the incompressible Navier-Stokes (NS)…Igor A. Maia, André V. G. Cavalieri·Oct 1, 2024SaveLearn
Computational Investigation of Roughness Effects on Boundary Layer Transition for Stetson's Blunt Cone at Mach 6In this aerothermal study, we performed a two-dimensional steady-state Computational Fluid Dynamics (CFD) and heat conduction simulation at Mach 6. The key to our methodology was a one-way coupling…Arturo Rodriguez, Piyush Kumar, Cesar Diaz-Caraveo et al.·Sep 30, 2024SaveLearn
Rapidly Rotating Wall-Mode ConvectionIn the rapidly rotating limit, we derive a balanced set of reduced equations governing the strongly nonlinear development of the convective wall-mode instability in the interior of a general…Geoffrey M. Vasil, Keaton J. Burns, Daniel Lecoanet et al.·Sep 30, 2024SaveLearn
Instability behavior of odd viscosity-induced viscous fluid over a vibrating bedThe manuscript focuses on the theoretical stability analysis of the viscous liquid over a vibrating inclined rigid bed when the fluid undergoes an impact of odd viscosity. Such an impact emerges in…Md. Mouzakkir Hossain, Mrityunjoy Saha, Harekrushna Behera et al.·Sep 30, 2024SaveLearn
WhY shape matters: Hydrodynamics of a Y-shaped membraneless electrolyzerA novel Y-shaped membraneless flow-through electrolyzer is introduced to achieve a homogeneous electrochemical reaction across the entire electrode in a cost-efficient cell design with effective…Karl Schoppmann, Hannes Rox, Erik Frense et al.·Sep 30, 2024SaveLearn
A front-tracking immersed-boundary framework for simulating Lagrangian melting problemsIn so-called Lagrangian melting problems, a solid immersed in a fluid medium is free to rotate and translate in tandem with its phase-change from solid to liquid. Such configurations may be…Kevin Zhong, Christopher J. Howland, Detlef Lohse et al.·Sep 30, 2024SaveLearn
Emergent dynamics and spatiotemporal patterns in soft robotic swarmsThe collective swimming of soft robots in an infinite viscous fluid is an emergent phenomenon due to the non-reciprocal hydrodynamic interactions between individual swimmers. These physical…R. Pramanik, R. W. C. P. Verstappen, P. R. Onck·Sep 30, 2024SaveLearn
Flow associated with Lighthill's elongated-body theoryThe hydrodynamic forces acting on an undulating swimming fish consist of two components: a drag-based resistive force and a reactive force originating from the necessary acceleration of an added mass…Christophe Eloy, Sébastien Michelin·Sep 30, 2024SaveLearn
Adaptive Mesh Refinement for Two-Phase Viscoelastic Fluid Mixture ModelsMultiphase flows are an important class of fluid flow and their study facilitates the development of diverse applications in industrial, natural, and biomedical systems. We consider a model that uses…Bindi M. Nagda, Aaron Barrett, Boyce E. Griffith et al.·Sep 30, 2024SaveLearn
NeDF: neural deflection fields for sparse-view tomographic background oriented SchlierenThree-dimensional (3D) density-varying turbulent flows are widely encountered in high-speed aerodynamics, combustion, and heterogeneous mixing processes. Multi-camera-based tomographic…Jiawei Li, Xuhui Meng, Yuan Xiong et al.·Sep 30, 2024SaveLearn
Detonation propagation in three-dimensional continuous curved ductsIn this paper, 3D detonation numerical studies are conducted using reactive Euler equations in both straight and curved channels. These simulations are compared to investigate the response of…Lisong Shi, Chih-Yung Wen, Xuxu Sun et al.·Sep 30, 2024SaveLearn
High frame rate characterization of interaction between twin-nozzle jet in crossflowThe twin-nozzle jet in crossflow is a canonical flow structure in various engineering equipment, yet there are limited detailed studies focusing on its dynamical characteristics. In this study, the…Xunchen Liu·Sep 30, 2024SaveLearn
Inference of water waves surface elevation from horizontal velocity components using physics informed neural networks (PINN)In this paper, a mathematical model is presented to infer the wave free surface elevation from the horizontal velocity components using Physics Informed Neural Network (PINN). PINN is a deep learning…Omar Sallam, Mirjam Fürth·Sep 30, 2024SaveLearn
Reduced dimensional description of hydromagnetic turbulence capturing higher order fluid momentsIn this paper, Chandrasekhar's deductive theory of turbulence is extended to the case of hydrodynamics and hydromagnetics, with higher order fluid moments. We include the contributions from…Arindam Saikia, Rupak Mukherjee·Sep 29, 2024SaveLearn
From Darcy flow to convective flow: pore-scale study of density-driven currents in porous mediaWe conducted a series of pore-scale numerical simulations on convective flow in porous media, with a fixed Schmidt number of 400 and a wide range of Rayleigh numbers. The porous media are modeled…Junyi Li, Yantao Yang, Chao Sun·Sep 29, 2024SaveLearn
Enhanced Profile-Preserving Phase-Field model of Two-Phase Flow with Surfactant Interfacial Transport and Marangoni EffectsUsing a regularized delta function to distribute surfactant interfacial concentration can simplify the computation of the surface gradient operator ∇s, enabling the phase-field model to…Haohao Hao, Xiangwei Li, Tian Liu et al.·Sep 28, 2024SaveLearn
Effect of the blast wave interaction on the flame heat release and droplet dynamicsThe study comprehensively investigates the response of a combusting droplet during its interaction with high-speed transient flow imposed by a coaxially propagating blast wave. The blast wave is…Gautham Vadlamudi, Balasundaram Mohan, Akhil Aravind et al.·Sep 28, 2024SaveLearn
Effectiveness of Turbulent Fountains in Frost Mitigation and Pollution ControlWe investigate the efficacy of turbulent fountains as a tool for frost mitigation and pollution control in stratified ambient fluids. By examining the interaction between the ejected fountain fluid…Daniel Freire Caporale, Luis G. Sarasúa, Nicasio Barrere et al.·Sep 27, 2024SaveLearn