Thunderscapes: Simulating the Dynamics of Mesoscale Convective SystemA Mesoscale Convective System (MCS) is a collection of thunderstorms operating as a unified system, showcasing nature's untamed power. They represent a phenomenon widely referenced in both the…Tianchen Hao·Dec 1, 2024SaveLearn
A one-dimensional mixing model for the impact of ablative Rayleigh-Taylor instability on compression dynamicsA one-dimensional mixing model, incorporating the effects of laser ablation and initial perturbations, is developed to study the influence of ablative Rayleigh-Taylor instability on compression…Dongxue Liu, Tao Tao, Jun Li et al.·Dec 1, 2024SaveLearn
Numerical Analysis of Cavitation Dynamics on Free Ogee Spillways Using the Volume of Fluid (VOF) MethodSimulating complex hydraulic conditions, particularly two-phase flows over spillway chutes, can be achieved with high accuracy using three-dimensional numerical models. This study investigates the…Parvaneh Nikrou, Sajjad Pirboudaghi·Dec 1, 2024SaveLearn
Operator learning regularization for macroscopic permeability prediction in dual-scale flow problemLiquid composites moulding is an important manufacturing technology for fibre reinforced composites, due to its cost-effectiveness. Challenges lie in the optimisation of the process due to the lack…Christina Runkel, Sinan Xiao, Nicolas Boullé et al.·Nov 30, 2024SaveLearn
Computing the multimodal stochastic dynamics of a nanobeam in a viscous fluidThe stochastic dynamics of small elastic objects in fluid are central to many important and emerging technologies. It is now possible to measure and use the higher modes of motion of elastic…J. Barbish, M. R. Paul·Nov 29, 2024SaveLearn
Predicting Non-Ideal Effects from the Diaphragm Opening Process in Shock TubesShock tubes are instrumental in studying high-temperature kinetics and simulating high-speed flows. They swiftly elevate the thermodynamic conditions of test gases, making them ideal for examining…Janardhanraj Subburaj, Miguel Figueroa-Labastida, Aamir Farooq·Nov 29, 2024SaveLearn
Continuous Eddy Simulation (CES): Conceptual approach and applicationsThe simulation of high Reynolds number (Re) separated turbulent flows faces significant problems for decades: large eddy simulation (LES) is computationally too expensive, and Reynolds-averaged…Stefan Heinz, Adeyemi Fagbade·Nov 29, 2024SaveLearn
The universality of the law of the wall: A long-lasting controversial debateThe discovery of the law of the wall, the log-law including the von Karman constant, is seen to be one of the biggest accomplishments of fluid mechanics. However, after more than ninety years there…Stefan Heinz·Nov 29, 2024SaveLearn
Coupled Flow-Thermal Analysis of a Rocket Nozzle with Charring Ablative Thermal Protection SystemThis paper presents a conjugate flow-thermal analysis of a rocket nozzle protected by a charring ablative thermal protection system (TPS). The study employs a coupled approach, integrating a CFD…Basit G. Sheikh, Rakesh Kumar, Susheel Kumar S·Nov 29, 2024SaveLearn
Gravity current energetics and particle suspensionGravity currents are a ubiquitous density driven flow occurring in both the natural environment and in industry. They include: seafloor turbidity currents, primary vectors of sediment, nutrient and…Edward W. G. Skevington, Robert M. Dorrell·Nov 29, 2024SaveLearn
Bounds on the Global Attractor of 2D Incompressible Turbulence in the Palinstrophy-Enstrophy-Energy SpaceAnalytic bounds on the projection of the global attractor of 2D incompressible turbulence in the palinstrophy--enstrophy plane [Dascaliuc, Foias, and Jolly 2005, 2010] are observed to vastly…Pedram Emami, John C. Bowman·Nov 29, 2024SaveLearn
Shock-capturing particle hydrodynamics with reproducing kernelsWe present and explore a new shock-capturing particle hydrodynamics approach. Our starting point is a commonly used discretization of smoothed particle hydrodynamics. We enhance this discretization…S. Rosswog·Nov 28, 2024SaveLearn
An unstructured adaptive mesh refinement for steady flows based on physics-informed neural networksMesh generation is essential for accurate and efficient computational fluid dynamics simulations. To resolve critical features in the flow, adaptive mesh refinement (AMR) is routinely employed in…Yongzheng Zhu, Shiji Zhao, Yuanye Zhou et al.·Nov 28, 2024SaveLearn
HOPE: An Automatically Differentiable High-Order Non-Oscillatory Finite-Volume Shallow-Water Dynamic CoreAn automatically differentiable, high-order non-oscillatory finite volume shallow water dynamic core has been constructed on a cubed sphere grid. This dynamic core has four advantageous properties:…Lilong Zhou·Nov 28, 2024SaveLearn
Invisible Hydrodynamic Tweezers Based on Near-Zero Index MaterialsManipulating particles, such as cells and tissues, in a flowing liquid environment is crucial for life science research. Traditional contactless tweezers, although widely used for single-cell…Yuhong Zhou, Fubao Yang, Jinrong Liu et al.·Nov 28, 2024SaveLearn
Crank-Nicolson BGK Integrator for Multi-Scale Particle-Based Kinetic SimulationsSolving the Bhatnagar-Gross-Krook (BGK) equation with a stochastic particle approach enables efficient and flexible simulations of flows in the transition regime, between continuum and free molecular…Marcel Pfeiffer, Félix Garmirian, Tobias Ott·Nov 28, 2024SaveLearn
Designing an Optimal Scoop for Holloman High-Speed Test Track Water Braking Mechanism using Computational Fluid DynamicsSpecializing in high-speed testing, Holloman High-Speed Test Track (HHSTT) uses water braking to stop vehicles on the test track. This method takes advantage of the higher density of water, compared…Jose A. Terrazas, Piyush Kumar, Arturo Rodriguez et al.·Nov 28, 2024SaveLearn
Stokes Waves in Finite Depth FluidsWe consider traveling waves on a surface of an ideal fluid of finite depth. The equation describing Stokes waves in conformal variables formulation are referred to as the Babenko equation. We use a…Anastassiya Semenova, Eleanor Byrnes·Nov 28, 2024SaveLearn
A Hybrid Immersed-Boundary/Front-Tracking Method for Interface-Resolved Simulation of Droplet EvaporationA hybrid sharp-interface immersed-boundary/front-tracking (IB/FT) method is developed for interface-resolved simulation of evaporating droplets in incompressible multiphase flows. A one-field…Faraz Salimnezhad, Hasret Turkeri, Iskender Gokalp et al.·Nov 27, 2024SaveLearn
A Geometric Approach to the Navier-Stokes EquationsIntroduction: the Navier-Stokes equations are essential in fluid dynamics, describing the motion of fluids like liquids and gases. Solving these equations, especially in complex flows and…Sebastian Ali Sacasa-Cespedes·Nov 27, 2024SaveLearn
Microcirculatory blood flow with aberrant levels of red blood cell aggregationRecent clinical results indicate that aberrant erythrocyte aggregation in hematological disorders is accompanied by endothelial damage and glycocalyx disruption, but the underlying biophysical…Xiaopo Cheng, Dell Zimmerman, Elizabeth Iffrig et al.·Nov 27, 2024SaveLearn
Modeling the Effect of Sleeve Gastrectomy on Gastric Digestion in the Stomach: Insights from Multiphase Flow ModelingThe geometry and motility of the stomach play a critical role in the digestion of ingested liquid meals. Sleeve gastrectomy, a common type of bariatric surgery used to reduce the size of the stomach,…Weixuan Li, Sharun Kuhar, Jung-Hee Seo et al.·Nov 27, 2024SaveLearn
Intrinsic aeroacoustic instabilities in the crosstalk apertures of can-annular combustorsThis paper presents an experimental and numerical study of aeroacoustic instabilities at the interface between neighbouring combustion chambers in modern heavy-duty gas turbines. A simplified…Audrey Blondé, Khushboo Pandey, Bruno Schuermans et al.·Nov 27, 2024SaveLearn
Drawing of Weakly Viscoelastic Fluid TubesWe explore the drawing of an axisymmetric viscoelastic tube subject to inertial and surface tension effects. We adopt the Giesekus constitutive model and derive asymptotic long-wave equations for…Diandian Gu, Jonathan J. Wylie, Dongdong He et al.·Nov 27, 2024SaveLearn
Flame-wall interaction of thermodiffusively unstable hydrogen/air flames -- Part II: Parametric variations of equivalence ratio, temperature, and pressureFuel-lean hydrogen combustion systems hold significant potential for low pollutant emissions, but are also susceptible to intrinsic combustion instabilities. While most research on these…Max Schneider, Hendrik Nicolai, Vinzenz Schuh et al.·Nov 27, 2024SaveLearn