Premixed flame quenching distance between cold walls: effects of flow and Lewis numberThis study investigates the critical conditions for flame propagation in channels with cold walls. We analyze the impact of the Lewis number and flow amplitude (A) on the minimum channel width…Aiden Kelly, Rémi Daou, Joel Daou et al.·Mar 22, 2025SaveLearn
Jet-noise reduction via streak generation in the nozzle boundary layerWe study the hydrodynamic and acoustic fields of turbulent jets issuing from nozzles modified by the addition of cylindrical tabs on the inner surface, one diameter upstream of the exit. The tabs are…Filipe R. do Amaral, Petrônio A. S. Nogueira, Igor A. Maia et al.·Mar 22, 2025SaveLearn
Volumetric density measurement in buoyant plumes using Tomographic Background Oriented Schlieren (TBOS)Buoyant plumes are encountered in both natural and artificial scenarios, ranging from volcanic ash clouds and wildfires to smoke from chimneys and industrial pollutant discharge to rivers and lakes.…Javed Mohd, Debopam Das·Mar 22, 2025SaveLearn
PT-PINNs: A Parametric Engineering Turbulence Solver based on Physics-Informed Neural NetworksPhysics-informed neural networks (PINNs) demonstrate promising potential in parameterized engineering turbulence optimization problems but face challenges, such as high data requirements and low…Liang Jiang, Yuzhou Cheng, Kun Luo et al.·Mar 22, 2025SaveLearn
A model for Reynolds-dependent linear instability in wall-bounded shear flowsRecent work demonstrated that alternative models to the "no-slip" boundary condition for incipient flow perturbations can produce linear instabilities that do not arise in the classical formulation.…John O. Dabiri, Anthony Leonard·Mar 21, 2025SaveLearn
Learning Non-Ideal Vortex Flows Using the Differentiable Vortex Particle MethodVortex flows are ubiquitous in both natural processes and engineering applications, including phenomena such as typhoons, water currents, and aerospace fluid dynamics. The vortex particle method, a…Ziqi Ji, Gang Du, Penghao Duan·Mar 21, 2025SaveLearn
High-order mesh-free direct numerical simulation of lean hydrogen flames in confined geometriesHere we perform the first analysis of high-fidelity simulations of the propagation of lean hydrogen flames through porous media, taking cylindrical arrays a representative example geometry. In this…H. M. Broadley, S. J. Lind, J. R. C. King·Mar 21, 2025SaveLearn
Vector Laplacian in Spherical Coordinates: An Unnoticed Typo in Landau and Lifshitz's Fluid Mechanics CourseA previously unaccounted fundamental typo has been discovered in Course of Theoretical Physics, vol. 6, by Landau and Lifshitz Fluid Mechanics, 1987, Pergamon, which corresponds to the same typo in…Peter Lebedev-Stepanov·Mar 21, 2025SaveLearn
NeuralFoil: An Airfoil Aerodynamics Analysis Tool Using Physics-Informed Machine LearningNeuralFoil is an open-source Python-based tool for rapid aerodynamics analysis of airfoils, similar in purpose to XFoil. Speedups ranging from 8x to 1,000x over XFoil are demonstrated, after…Peter Sharpe, R. John Hansman·Mar 20, 2025SaveLearn
New exact spatially localized solutions of the (3 + 1) -dimensional nonlinear non-dissipative quasi-geostrophic potential vorticity equation for an exponential atmosphereNew exact spatially localized stationary solutions against the background of a zonal flow are found for the (3+1)-dimensional nonlinear non-dissipative quasi-geostrophic potential vorticity equation,…A. G. Kudryavtsev, N. N. Myagkov·Mar 20, 2025SaveLearn
Surface quasigeostrophic turbulence: The refined study of an active scalarSQG describes the 2D active transport of a scalar field, such as temperature, which -- when properly rescaled -- shares the same physical dimension of length/time as the advecting velocity field.…Nicolas Valade, Jérémie Bec, Simon Thalabard·Mar 20, 2025SaveLearn
Hydrodynamic Interactions in Particle Suspensions: A Perspective on Stokesian DynamicsStokesian Dynamics (SD) is a numerical framework used for simulating hydrodynamic interactions in particle suspensions at low Reynolds number. It combines far-field approximations with near-field…Kim William Torre, Joost de Graaf·Mar 20, 2025SaveLearn
Multiphase SPH for surface tension: resolving zero-surface-energy modes and achieving high Reynolds number simulationsThis study introduces a Riemann-based Smoothed Particle Hydrodynamics (SPH) framework for the stable and accurate simulation of surface tension in multiphase flows, with density and viscosity ratios…Shuaihao Zhang, Sérgio D. N. Lourenço, Xiangyu Hu·Mar 20, 2025SaveLearn
Investigation of Chip Evacuation in Ejector Deep Hole Drilling using Mesh-Free Simulation MethodsEjector deep hole drilling is advantageous due to its high material removal rate and bore quality without requiring a complex sealing system for drilling applications with large length to diameter…Nuwan Rupasinghe, Julian Frederic Gerken, Andreas Baumann et al.·Mar 20, 2025SaveLearn
Modeling late-time sensitivity to initial conditions in Boussinesq Rayleigh-Taylor turbulenceThis article sheds light on the late-time influence of initial conditions in Boussinesq Rayleigh-Taylor turbulence using an approach combining direct numerical simulations, machine learning and…Sébastien Thévenin, Benoît-Joseph Gréa·Mar 20, 2025SaveLearn
Sequential learning based PINNs to overcome temporal domain complexities in unsteady flow past flapping wingsFor a data-driven and physics combined modelling of unsteady flow systems with moving immersed boundaries, Sundar et al. introduced an immersed boundary-aware (IBA) framework, combining…Rahul Sundar, Didier Lucor, Sunetra Sarkar·Mar 19, 2025SaveLearn
Weakly nonlinear analysis of particle-laden Rayleigh-B\'enard convectionWe investigate the effect of inertial particles on Rayleigh-B\'enard convection using weakly nonlinear stability analysis. In the presence of nonlinear effects, we study the limiting value of growth…Thota Srinivas, Gaurav Tomar·Mar 19, 2025SaveLearn
Direct numerical simulations on transport and deposition of charged inertial particles in turbulent channel flowFrom particle lifting in atmospheric boundary layers to dust ingestion in jet engines, the transport and deposition of inertial particles in wall-bounded turbulent flows are prevalent in both nature…Xuan Ruan, Miguel X. Diaz-Lopez, Matthew T. Gorman et al.·Mar 19, 2025SaveLearn
Sedimentation and shear-induced dynamics of spheroids in fluids with spatial viscosity variationsA generalized reciprocal theorem is used to relate the force and torque induced on a particle in an inertia-less fluid with small variation in viscosity to integrals involving Stokes flow fields and…Arjun Sharma, Peter A. Bosler, Rama Govindarajan et al.·Mar 19, 2025SaveLearn
Revealing the drivers of turbulence anisotropy over flat and complex terrain: an interpretable machine learning approachTurbulence anisotropy was recently integrated into Monin-Obukhov Similarity Theory (MOST), extending its applicability to complex terrain and diverse surface conditions. Implementing this generalized…Samuele Mosso, Karl Lapo, Ivana Stiperski·Mar 19, 2025SaveLearn
Longitudinal vortices in unsteady Taylor-Couette flow: solution to a 60-year-old mysteryApplying a sufficiently rapid start-stop to the outer cylinder of the Couette-Taylor system, structures approximately aligned with the axis were recorded in the classic work of Coles (1965). These…Ashley P. Willis, Michael J. Burin·Mar 19, 2025SaveLearn
Thermal Enskog-Vlasov Lattice Boltzmann model with phase separationAn Enskog-Vlasov finite-difference Lattice Boltzmann (EV-FDLB) for liquid-vapor systems with variable temperature is introduced. The model involves both the simplified Enskog collision operator and…Sergiu Busuioc, Victor Sofonea·Mar 19, 2025SaveLearn
Analytic adjoint solution for incompressible potential flowsWe obtain the analytic adjoint solution for two-dimensional (2D) incompressible potential flow for a cost function measuring aerodynamic force using the connection of the adjoint approach to Green's…Carlos Lozano, Jorge Ponsin·Mar 19, 2025SaveLearn
A new emitter for electrospray and electrohydrodynamic jet printingWe propose using a dielectric beveled nozzle for electrospray and electrohydrodynamic jet printing. This nozzle stabilizes the liquid ejection of low-conductivity liquids, considerably reducing the…D. Fernández-Martínez, E. J. Vega, A. M. Gañán-Calvo et al.·Mar 19, 2025SaveLearn
Enhancement of Large Eddy Simulation for the prediction of an intake flow rig using sequential Data AssimilationA Data Assimilation (DA) strategy based on an ensemble Kalman filter (EnKF) is used to enhance the predictive capabilities of scale resolving numerical tools for the analysis of flows exhibiting…Lucas Villanueva, Karine Truffin, Jacques Borée et al.·Mar 19, 2025SaveLearn