Localized performance of riblets with curved cross-sectional profiles in boundary layers past finite length bodiesRiblets are a well-known passive drag reduction technique with the potential for as much as 9% reduction in the frictional drag force in laboratory settings, and proven benefits for large scale…Shuangjiu Fu, Shabnam Raayai-Ardakani·Sep 7, 2024SaveLearn
Unified scaling model for viscosity of crude oil over extended temperature rangeThe viscosity of crude oil is an important physical property that largely determines the fluidity of oil and its ability to seep through porous media such as geological rock. Predicting crude oil…Bulat Galimzyanov, Maria Doronina, Anatolii Mokshin·Sep 7, 2024SaveLearn
Annular Newtonian Poiseuille flow with pressure-dependent wall slipWe investigate the effect of pressure-dependent wall slip on the steady Newtonian annular Poiseuille flow employing Navier's slip law with a slip parameter that varies exponentially with pressure.…Kostas D. Housiadas, Evgenios Gryparis, Georgios C. Georgiou·Sep 7, 2024SaveLearn
Dissipative Collisions of Impinging Liquid Jets Having Uniform Velocity ProfilesThe dissipation of energy in the impingement zone from the collision of impinging, free, equal jets of liquids was investigated by comparison with studies on the energy dissipation from the collision…Robert Demyanovich·Sep 7, 2024SaveLearn
Numerical Study of Flow Past a Wall-Mounted Dolphin Dorsal Fin at Low Reynolds NumbersDolphin swimming has been a captivating area of study, yet the hydrodynamics of the dorsal fin remain underexplored. In this study, we present three-dimensional simulations of flow around a…Zhonglu Lin, An-Kang Gao, Yu Zhang·Sep 6, 2024SaveLearn
An efficient hp-Variational PINNs framework for incompressible Navier-Stokes equationsPhysics-informed neural networks (PINNs) are able to solve partial differential equations (PDEs) by incorporating the residuals of the PDEs into their loss functions. Variational Physics-Informed…Thivin Anandh, Divij Ghose, Ankit Tyagi et al.·Sep 6, 2024SaveLearn
Stochastic identities for random isotropic fieldsThis letter presents new nontrivial stochastic identities for random isotropic second rank tensor fields. They can be considered as markers of statistical isotropy in turbulent flows of any nature.…A. S. Il'yn, A. V. Kopyev, V. A. Sirota et al.·Sep 6, 2024SaveLearn
A deep learning approach to wall-shear stress quantification: From numerical training to zero-shot experimental applicationThe accurate quantification of wall-shear stress dynamics is of substantial importance for various applications in fundamental and applied research, spanning areas from human health to aircraft…Esther Lagemann, Julia Roeb, Steven L. Brunton et al.·Sep 5, 2024SaveLearn
Active grid turbulence anomalies through the lens of physics informed neural networksActive grids operated with random protocols are a standard way to generate large Reynolds number turbulence in wind and water tunnels. But anomalies in the decay and third-order scaling of…Sofía Angriman, Sarah E. Smith, Patricio Clark di Leoni et al.·Sep 5, 2024SaveLearn
Data-driven turbulent heat flux modeling with inputs of multiple fidelityData-driven RANS modeling is emerging as a promising methodology to exploit the information provided by high-fidelity data. However, its widespread application is limited by challenges in…Matilde Fiore, Enrico Saccaggi, Lilla Koloszar et al.·Sep 5, 2024SaveLearn
Configurable Vibrational Coupling in Laser-Induced Microsecond Oscillations of Multi-Microbubble SystemWe study the coupled vibrational dynamics of sub-MHz self-oscillating bubbles at separations of 14 to 92 μm. Two vapor-rich microbubbles are generated via photothermal heating; their interactions…Xuanwei Zhang, Ryu Matsuo, Jun Nishida et al.·Sep 5, 2024SaveLearn
Demonstration of Scalability and Accuracy of Variational Quantum Linear Solver for Computational Fluid DynamicsThe solution for non-linear, complex partial differential Equations (PDEs) is achieved through numerical approximations, which yield a linear system of equations. This approach is prevalent in…Ferdin Sagai Don Bosco, Dhamotharan S, Rut Lineswala et al.·Sep 5, 2024SaveLearn
On the Energy Spectrum of Non-Newtonian TurbulenceThe goal of this paper is to propose a theoretical framework to study homogeneous and isotropic turbulence in a viscoelastic fluid, regarded as a perturbation of a Newtonian incompressible fluid,…Esteban Calzetta·Sep 5, 2024SaveLearn
Parameter Analysis in Continuous Data Assimilation for Various Turbulence ModelsIn this study, we conduct parameter estimation analysis on a data assimilation algorithm for two turbulence models: the simplified Bardina model and the Navier-Stokes-α model. Our approach…Debora A. F. Albanez, Maicon Jose Benvenutti, Samuel Little et al.·Sep 4, 2024SaveLearn
Development of the Multichannel Pulsed Ultrasonic Doppler Velocimeter for the measurement of liquid metal flowIn the present study, by adopting the advantage of ultrasonic techniques, we developed a Multichannel Pulsed Ultrasonic Doppler Velocimetry (MPUDV) to measure the 2D2C velocity fields of liquid metal…Ding-Yi Pan, Yi-Fei Huang, Ze Lyu et al.·Sep 4, 2024SaveLearn
Generation Model of a Spatially Limited Vortex in a Stratified Unstable AtmosphereThis paper presents a new model for the generation of axisymmetric concentrated vortices. The solution of a nonlinear equation for internal gravity waves in an unstable stratified atmosphere is…O. G. Onishchenko, S. N. Artekha, F. Z. Feygin et al.·Sep 4, 2024SaveLearn
Thermoelectricity at a gallium-mercury liquid metal interfaceWe present experimental evidence of a thermoelectric effect at the interface between two liquid metals. Using superimposed layers of mercury and gallium in a cylindrical vessel operating at room…Marlone Vernet, Stephan Fauve, Christophe Gissinger·Sep 4, 2024SaveLearn
Kolmogorov-size particles in homogeneous and isotropic turbulenceWe investigate the fluid-solid interaction of suspensions of Kolmogorov-size spherical particles moving in homogeneous isotropic turbulence at a microscale Reynolds number of $Reλ ≈…Alessandro Chiarini, Simone Tandurella, Marco Edoardo Rosti·Sep 4, 2024SaveLearn
Diffusion-limited settling of highly porous particles in density-stratified fluidsThe vertical transport of solid material in a stratified medium is fundamental to a number of environmental applications, with implications for the carbon cycle and nutrient transport in marine…Robert Hunt, Roberto Camassa, Richard M. McLaughlin et al.·Sep 4, 2024SaveLearn
Consistent multiple-relaxation-time lattice Boltzmann method for the volume averaged Navier-Stokes equationsRecently, we notice that a pressure-based lattice Boltzmann (LB) method was established to recover the volume-averaged Navier-Stokes equations (VANSE), which serve as the cornerstone of various…Yang Liu, Xuan Zhang, Jingchun Min et al.·Sep 4, 2024SaveLearn
Inertial focusing of spherical capsule in pulsatile channel flowsWe present numerical analysis of the lateral movement of spherical capsule in the steady and pulsatile channel flow of a Newtonian fluid, for a wide range of oscillatory frequency. Each capsule…Naoki Takeishi, Kenta Ishimoto, Naoto Yokoyama et al.·Sep 4, 2024SaveLearn
Investigation of cloud cavitating flow in a venturi using Adaptive Mesh Refinement (AMR)Unsteady cloud cavitating flow is detrimental to the efficiency of hydraulic machinery like pumps and propellers due to the resulting side-effects of vibration, noise and erosion damage. Modelling…Dhruv Apte, Mingming Ge, Olivier Coutier-Delgosha·Sep 4, 2024SaveLearn
A generalized adaptive central-upwind scheme for compressible flow simulations and preventing spurious vorticesThis work introduces a novel adaptive central-upwind scheme designed for simulating compressible flows with discontinuities in the flow field. The proposed approach offers significant improvements in…Amareshwara Sainadh Chamarthi·Sep 4, 2024SaveLearn
Personalized and uncertainty-aware coronary hemodynamics simulations: From Bayesian estimation to improved multi-fidelity uncertainty quantificationSimulations of coronary hemodynamics have improved non-invasive clinical risk stratification and treatment outcomes for coronary artery disease, compared to relying on anatomical imaging alone.…Karthik Menon, Andrea Zanoni, Owais Khan et al.·Sep 3, 2024SaveLearn
Effects of fetch length on turbulent boundary layer recovery past a step-change in surface roughnessRecent studies focusing on the response of turbulent boundary layers (TBL) to a step-change in roughness have provided insight into the scaling and characterisation of TBLs and the development of the…Martina Formichetti, Dea D. Wangsawijaya, Sean Symon et al.·Sep 3, 2024SaveLearn