Bispectral decomposition and energy transfer in a turbulent jetWe employ bispectral mode decomposition (BMD) to investigate coherent triadic interactions and nonlinear energy transfer in a subsonic turbulent jet. BMD extracts the flow structures corresponding to…Akhil Nekkanti, Ethan Pickering, Oliver T. Schmidt et al.·Feb 20, 2025SaveLearn
A Quasi-Analytical Solution for "Carreau-Yasuda-like" Shear-thinning Fluids Flowing in Slightly Tapered PipesThis paper presents a quasi-analytical framework for "Carreau-Yasuda-like" fluids with a viscosity characterized by two constant plateau at low and high shear rates connected by a shear-thinning…Gianluca Santesarti, Michele Marino, Francesco Viola et al.·Feb 20, 2025SaveLearn
An Insight into Parameter Identifiability Issues in the Carreau-Yasuda Model: a More Consistent Rheological Formulation for Shear-thinning non-Newtonian Inelastic FluidsThe Carreau-Yasuda rheological model is widely employed in both research and industrial applications to describe the shear-thinning behaviour of non-Newtonian inelastic fluids. However, the model…Gianluca Santesarti, Michele Marino, Francesco Viola et al.·Feb 20, 2025SaveLearn
Model-based time super-sampling of turbulent flow field sequencesWe propose a novel method for model-based time super-sampling of turbulent flow fields. The key enabler is the identification of an empirical Galerkin model from the projection of the Navier-Stokes…Qihong Lorena Li-Hu, Patricia García-Caspueñas, Andrea Ianiro et al.·Feb 20, 2025SaveLearn
Evolution and sudden change of steady interactions of low enthalpy hypersonic double wedge flows with fore angleThe evolution and sudden change of steady interaction structures is numerically studied with the fore wedge angle theta1 in a low enthalpy hypersonic double wedge configuration. It particularly…Yihui Weng, Yi Duan, Qin Li et al.·Feb 20, 2025SaveLearn
Atmospheric boundary layer over urban roughness: validation of large-eddy simulationThe study presents wall-modeled large-eddy simulations (LES) characterizing the flow features of a neutral atmospheric boundary layer over two urban-like roughness geometries: an array of…Ming Teng, Josep M. Duró Diaz, Ernest Mestres et al.·Feb 19, 2025SaveLearn
Data-driven correlations for thermohydraulic roughness propertiesThe influence of rough surfaces on fluid flow is characterized by the downward shift in the logarithmic layer of velocity and temperature profiles, namely the velocity roughness function U+…Simon Dalpke, Jiasheng Yang, Pourya Forooghi et al.·Feb 19, 2025SaveLearn
Turbulence Modelling of Mixing Layers under Anisotropic StrainThe development of turbulent mixing layers can be altered by the application of anisotropic strain rates, potentially arising from radial motion in convergent geometry or movement through non-uniform…Bradley Pascoe, Michael Groom, Ben Thornber·Feb 19, 2025SaveLearn
Impact of transverse strain on linear, transitional and self-similar turbulent mixing layersThe growth of interfacial instabilities such as the Rayleigh-Taylor (RTI) and Richtmyer-Meshkov instability (RMI) are modified when developing in convergent geometries. Whilst these modifications are…Bradley Pascoe, Michael Groom, David L. Youngs et al.·Feb 19, 2025SaveLearn
Analysis of Brownian coagulation in the spatial mixing layer based on average kernel coupled with iterative direct numerical simulation frameworkThis study investigates the evolution of nanoparticle populations undergoing Brownian coagulation in a spatial mixing layer. The dynamics of particle size distribution and number concentration are…Mingliang Xie·Feb 19, 2025SaveLearn
Analytical model for balling defects in laser melting using rivulet theory and solidificationIn the laser welding and additive manufacturing (AM) communities, the balling defect is primarily attributed to the action of fluid instabilities with a few authors suggesting other mechanisms.…Zane Taylor, Tharun Reddy, Maureen Fitzpatrick et al.·Feb 18, 2025SaveLearn
Fluid Motion Makes the Bottle-Flip Challenge Mechanically Unintuitive But ViableThe bottle-flip challenge -- the upright landing of a partially filled bottle after tossing and flipping it in the air -- unexpectedly became a viral mechanics exercise. Through high-speed…Patricio Morales, Victor Ahumada, Leonardo Gordillo et al.·Feb 18, 2025SaveLearn
Finger properties in bounded double diffusive finger convectionWe analyze experimental data on double diffusive convection in an electrochemical cell in the finger regime. All fingers in the experiments are bounded on at least one end by a solid wall. The…A. Rosenthal, A. Tilgner·Feb 18, 2025SaveLearn
A Numerical Investigation of Particle Deposition on a SubstrateThe deposition of nanometer-scale particles is of significant interest in various industrial processes. While these particles offer several advantages, their deposition can have detrimental effects,…A. K. Nayak, A. Singh, M. Mesgarpour et al.·Feb 18, 2025SaveLearn
The evolution of nanoparticles due to Brownian coagulation in the temporal mixing layer with AK-iDNS over a long timeIn this article, the evolution of nanoparticles in a two-dimensional temporal mixing layer over a long time is investigated. the flow field is calculated with direct numerical simulation (DNS), while…Kejun Pan, Mingliang Xie·Feb 18, 2025SaveLearn
An unstructured block-based adaptive mesh refinement approach for explicit discontinuous Galerkin methodIn the present paper, we present an adaptive mesh refinement(AMR) approach designed for the discontinuous Galerkin method for conservation laws. The block-based AMR is adopted to ensure the local…Yun-Long Liu, A-Man Zhang, Qi Konga et al.·Feb 18, 2025SaveLearn
Scientific Machine Learning of Flow Resistance Using Universal Shallow Water Equations with Differentiable ProgrammingShallow water equations (SWEs) are the backbone of most hydrodynamics models for flood prediction, river engineering, and many other water resources applications. The estimation of flow resistance,…Xiaofeng Liu, Yalan Song·Feb 18, 2025SaveLearn
An a posteriori data-driven method for phase-averaged optical measurementsPhase-averaging is a fundamental approach for investigating periodic and non-stationary phenomena. In fluid dynamics, these can be generated by rotating blades such as propellers/turbines or by…Enrico Amico, Sara Montagner, Jacopo Serpieri et al.·Feb 17, 2025SaveLearn
Large-scale clustering of inertial particles in a rotating, stratified and inhomogeneous turbulenceWe develop a theory of various kinds of large-scale clustering of inertial particles in a rotating density stratified or inhomogeneous turbulent fluid flows. The large-scale particle clustering…Nathan Kleeorin, Igor Rogachevskii·Feb 17, 2025SaveLearn
Regimes of spray formation in gas-centered swirl coaxial atomizersSpray formation in ambient atmosphere from gas-centered swirl coaxial atomizers is described by carrying out experiments in a spray test facility. The atomizer discharges a circular air jet and an…Deivandren Sivakumar, Varun Kulkarni·Feb 17, 2025SaveLearn
Reduced order modeling of the unsteady pressure on turbine rotor blades using deep learningIn transonic turbine stages, complex interactions between trailing edge shocks from nozzle guide vanes and rotor blades generate unsteady wall pressure fields, impacting rotor aerodynamic performance…Dominique Joachim, Salesses Lionel, Thomas Jean-François et al.·Feb 17, 2025SaveLearn
Revision of the linear stability paradox for known bounded shear flowsThe well-known paradox of linear stability for the some bounded shear flows is not solved up to now and is bypassed on the basis of the non-linear mechanisms consideration. We prove that it is…Sergey G. Chefranov, Alexander G. Chefranov·Feb 17, 2025SaveLearn
Minimum-dissipation model and symmetry-preserving discretization for scalar transport in a turbulent flowThis work extends the minimum-dissipation model of large-eddy simulation and symmetry-preserving discretization to account for active or passive scalar transport and complex physical mechanisms.This…Jing Sun, F. Xavier Trias, Roel Verstappen·Feb 17, 2025SaveLearn
Fluctuation-dissipation theorems for multi-phase flow with memory in porous mediaRecent works have reported on the collective behavior of multiphase systems under fractional flow. Such behavior has been linked to pressure and/or flux fluctuations under stationary flow conditions…Dick Bedeaux, Signe Kjelstrup, Steffen Berg et al.·Feb 17, 2025SaveLearn
A Kernel Ridge Regression Combining Nonlinear ROMs for Accurate Flow Field Reconstruction with DiscontinuitiesNonlinear reduced-order models (ROMs), represented by manifold learning (ML), can effectively improve the modeling accuracy of nonlinear flow fields with discontinuities. However, the inverse mapping…Weiji Wang, Chunlin Gong, Xuyi Jia et al.·Feb 17, 2025SaveLearn