Dynamics of a Data-Driven Low-Dimensional Model of Turbulent Minimal Pipe FlowThe simulation of turbulent flow requires many degrees of freedom to resolve all the relevant times and length scales. However, due to the dissipative nature of the Navier-Stokes equations, the…C. Ricardo Constante-Amores, Alec J. Linot, Michael D. Graham·Aug 6, 2024SaveLearn
Surface detachment and bed entrainment of fluvial plasticsOver the last decade, fluvial plastics have been identified as major threat to aquatic environments and human health. In order to develop adequate mitigation strategies for plastic pollution, a…Matthias Kramer·Aug 6, 2024SaveLearn
A unified transition mechanism from shock to detonation wavesThe transition of shock-to-detonation is of great significance for the investigation of supernova formation, disaster prevention and supersonic propulsion technology. In this paper, the influence…Hao Yan, Haochen Xiong, Xin Han et al.·Aug 6, 2024SaveLearn
Unsteady separation and oscillations in a compressible wake of a cylinderThe paper presents a new analysis and a new interpretation of oscillations observed in the experiments of near wakes of cylinders at Mach 4 and Mach 6 and Reynolds number range 2 × 104 to 5…Sudhir Gai, Krishna Talluru, Akshay Nandhan·Aug 6, 2024SaveLearn
Phase Transitions in Anisotropic TurbulenceTurbulence is a widely observed state of fluid flows, characterized by complex, nonlinear interactions between motions across a broad spectrum of length and time scales. While turbulence is…Adrian van Kan·Aug 5, 2024SaveLearn
Towards improved understanding of spontaneous imbibition into dry porous media using pore-scale direct numerical simulationsTraditional approaches to mathematically describe spontaneous imbibition are usually based on either macro-scale models, such as Richards equation, or simplified pore-scale models, such as the bundle…Luka Malenica, Zhidong Zhang, Ueli Angst·Aug 5, 2024SaveLearn
Learning the Latent dynamics of Fluid flows from High-Fidelity Numerical Simulations using Parsimonious Diffusion MapsWe use parsimonious diffusion maps (PDMs) to discover the latent dynamics of high-fidelity Navier-Stokes simulations with a focus on the 2D fluidic pinball problem. By varying the Reynolds number,…Alessandro Della Pia, Dimitris Patsatzis, Lucia Russo et al.·Aug 5, 2024SaveLearn
Superradiant droplet emission from a single hydrodynamic cavity near a reflective boundaryRecent advances in manipulating droplet emissions from a thin vibrating fluid using submerged cavities, have introduced an innovative platform for generating hydrodynamic analogs of quantum and…Konstantinos Papatryfonos, Jemma W. Schroder, Valeri Frumkin·Aug 5, 2024SaveLearn
Learning rheological parameters of non-Newtonian fluids from velocimetry dataWe solve a Bayesian inverse Navier-Stokes (N-S) problem that assimilates velocimetry data in order to jointly reconstruct the flow field and learn the unknown N-S parameters. By incorporating a…Alexandros Kontogiannis, Richard Hodgkinson, Emily L. Manchester·Aug 5, 2024SaveLearn
Slip Length in Shear Flow Over a Textured SurfaceHydrophobic textured surfaces are studied for their low wettability and their capacity to create a 'slippery' fluid on the surface during lubrication. To this end, the flow between two parallel…Nicolas Elie, Pascal Jolly, Romain Lucas-Roper et al.·Aug 5, 2024SaveLearn
Traversing a thin lubricant film in finite timeIn this study, we investigate the dynamics of particles overcoming the hydrodynamic barrier posed by a thin fluid film to achieve contact in finite time, a phenomenon critical in various natural and…John Sebastian, Alexander L. Schødt, Kaare H. Jensen·Aug 5, 2024SaveLearn
Rayleigh-B\'enard convective motion of stratified fluids in the Earth's troposphereRecently, Kaladze and Misra [Phys. Scr. 99 (2024) 085013] showed that the tropospheric stratified fluid flows may be unstable by the effects of the negative temperature gradient and the…A. P. Misra, T. D. Kaladze, D. T. Kaladze et al.·Aug 5, 2024SaveLearn
Reemergence of Trampolining in a Leidenfrost DropletThe levitating Leidenfrost (LF) state of a droplet on a heated substrate is often accompanied by fascinating behaviors such as star-shaped deformations, self-propulsion, bouncing, and trampolining.…Pranjal Agrawal, Gaurav Tomar, Susmita Dash·Aug 5, 2024SaveLearn
Study of Turbulence and Pressure Recovery in the Heat Pipe Vapor Flow Using the Spectral-Element MethodHeat pipes can efficiently and passively remove heat in nuclear microreactors. Nevertheless, the flow dynamics within heat pipes present a significant challenge in designing and optimizing them for…Carolina Bourdot Dutra, Tri Nguyen, Elia Merzari et al.·Aug 5, 2024SaveLearn
Non-invasive imaging assisted CFD simulation of 4D multi-modal fluid flow using In-situ adaptorX-ray Computed Tomography (CT) is used to recover the true surfaces of fluid channels and fed to simulation tool (ANSYS) to create accurate cyber environment. The simulation tool also receives…Vaishali Sharma, Arpit Kumar, Snehlata Shakya et al.·Aug 4, 2024SaveLearn
Examination of ventilated cavities in the wake of a two-dimensional bluff bodyVentilated cavities in the wake of a two-dimensional bluff body are studied experimentally via time-resolved X-ray densitometry. With a systematic variation of flow velocity and gas injection rate,…Udhav U. Gawandalkar, Nicholas A. Lucido, Prachet Jain et al.·Aug 4, 2024SaveLearn
Exact planetary waves and jet streamsWe investigate exact nonlinear waves on surfaces locally approximating the rotating sphere for two-dimensional inviscid incompressible flow. Our first system corresponds to a beta-plane approximation…Nick Pizzo, Rick Salmon·Aug 4, 2024SaveLearn
Effect of Uniform and Non-uniform wall heating on Three-Dimensional Magneto-Hydrodynamics Natural Convection and Entropy Generation: A computational study using New Higher Order Super Compact SchemeCurrent research work deals with the effect of uniform and non-uniform wall heating on magnetohydrodynamic (MHD) natural convection within a three-dimensional (3D) cavity filled with molten lithium.…Ashwani Punia, Rajendra K. Ray·Aug 3, 2024SaveLearn
Breakup of viscous liquid bridges on solid surfacesThe breakup dynamics of viscous liquid bridges on solid surfaces is studied experimentally. It is found that the dynamics bears similarities to the breakup of free liquid bridges in the viscous…Salar Farokhi, Peyman Rostami, Günter K. Auernhammer et al.·Aug 3, 2024SaveLearn
Self-Supervised Learning for Effective Denoising of Flow FieldsIn this study, we proposed an efficient approach based on a deep learning (DL) denoising autoencoder (DAE) model for denoising noisy flow fields. The DAE operates on a self-learning principle and…Linqi Yu, Mustafa Z. Yousif, Dan Zhou et al.·Aug 3, 2024SaveLearn
Flow Reconstruction Using Spatially Restricted Domains Based on Enhanced Super-Resolution Generative Adversarial NetworksThis study aims to reconstruct the complete flow field from spatially restricted domain data by utilizing an Enhanced Super-Resolution Generative Adversarial Network (ESRGAN) model. The difficulty in…Mustafa Z. Yousif, Dan Zhou, Linqi Yu et al.·Aug 3, 2024SaveLearn
Numerical study of cavitation bubble dynamics in a flowing tubeCavitation in tubes is a common occurrence in nature and engineering applications. Previous studies of cavitation bubble dynamics mainly consider bubbles in stagnant-water tubes, but the dynamics of…Nian Wang, Odumuyiwa A. Odumosu, Tianyou Wang et al.·Aug 2, 2024SaveLearn
Entropy conservative discretization of compressible Euler equations with an arbitrary equation of stateThis study proposes a novel spatial discretization procedure for the compressible Euler equations which guarantees entropy conservation at a discrete level when an arbitrary equation of state is…Alessandro Aiello, Carlo De Michele, Gennaro Coppola·Aug 2, 2024SaveLearn
Modelling the three-dimensional, diagnostic anisotropy field of an ice risePolar ice develops anisotropic crystal orientation fabrics under deformation, yet ice is most often modelled as an isotropic fluid. We present three-dimensional simulations of the crystal orientation…A. Clara J. Henry, Carlos Martín, Reinhard Drews·Aug 2, 2024SaveLearn
Instabilities in strongly shear-thinning viscoelastic flows through channels and tubesThe linear stability of a shear-thinning, viscoelastic fluid undergoing any of the canonical rectilinear shear flows, viz., plane Couette flow and pressure-driven flow through a channel or a tube is…Ramkarn Patne, Shraddha Mandloi, V. Shankar et al.·Aug 2, 2024SaveLearn