A Thermodynamically Consistent Phase-Field Model and an Entropy Stable Numerical Method for Simulating Two-Phase Flows with Thermocapillary EffectsIn this study, we have derived a thermodynamically consistent phase-field model for two-phase flows with thermocapillary effects. This model accommodates variations in physical properties such as…Yanxiao Sun, Jiang Wu, Maosheng Jiang et al.·Apr 7, 2024SaveLearn
Turbulence-induced oscillation on particle detachment from a wallParticle resuspension is a ubiquitous phenomenon with pivotal relevance in numerous natural and industrial contexts. In this study, we present findings on the resuspension of individual micro-sized…Zhikai You, Yiyang Zhang, Zhu Fang et al.·Apr 7, 2024SaveLearn
Exact and Approximate Solutions for Magnetohydrodynamic Flow Control in Hele-Shaw CellsConsider the motion of a thin layer of electrically conducting fluid, between two closely spaced parallel plates, in a classical Hele-Shaw geometry. Furthermore, let the system be immersed in a…Kyle McKee·Apr 7, 2024SaveLearn
PointSAGE: Mesh-independent superresolution approach to fluid flow predictionsComputational Fluid Dynamics (CFD) serves as a powerful tool for simulating fluid flow across diverse industries. High-resolution CFD simulations offer valuable insights into fluid behavior and flow…Rajat Sarkar, Krishna Sai Sudhir Aripirala, Vishal Sudam Jadhav et al.·Apr 6, 2024SaveLearn
Ups and downs: Copepods reverse the near-body flow to cruise in the water columnCopepods participate in large-scale diel vertical migrations (DVM) as primary consumers in marine ecosystems. Given that they are negatively buoyant, gravity facilitates their downward cruising but…Nils B. Tack, Sara Oliveira Santos, Brad J. Gemmell et al.·Apr 5, 2024SaveLearn
From an obliquely falling rod in a viscous fluid to the motion of suspended magnetic bead chains that are driven by a gradient magnetic field and that make an arbitrary angle with the magnetic force vector: A Stokes flow studyIn view of the growing role of magnetic particles under magnetic field influence in medical and other applications, and perforce the bead chaining, it is important to understand more generally the…Robert J. Deissler, Rose Al Helo, Robert Brown·Apr 5, 2024SaveLearn
Particle chirality does not matter in the large-scale features of strong turbulenceWe use three-dimensional direct numerical simulations of homogeneous isotropic turbulence in a cubic domain to investigate the dynamics of heavy, chiral, finite-size inertial particles and their…Giulia Piumini, Martin P. A. Assen, Detlef Lohse et al.·Apr 5, 2024SaveLearn
Lagrangian Particle Tracking at Large Reynolds NumbersParticle tracking in turbulent flows is fundamental to the study of the transport of tracers, inertial particles or even active objects in space and time, i.e. the Lagrangian frame of reference. It…Christian Küchler, Antonio Ibanez Landeta, Jan Molacek et al.·Apr 5, 2024SaveLearn
Physics-informed Data-driven Cavitation Model for a Specific MG EOSWe present a novel one-fluid cavitation model of a specific Mie-Gr\"uneisen equation of state(EOS), named polynomial EOS, based on an artificial neural network. Not only the physics-informed equation…Minsheng Huang, Chengbao Yao, Pan Wang et al.·Apr 5, 2024SaveLearn
Laminar planar jets of elastoviscoplastic fluidsWe perform numerical simulations of planar jets of elastoviscoplastic (EVP) fluid (saramito2007new model) at low Reynolds number. Three different configurations are considered: (i) EVP jet…Giovanni Soligo, Marco Edoardo Rosti·Apr 5, 2024SaveLearn
Asymmetric vertical transport in weakly forced shallow flowsWe report on an investigation of the vertical transport of tracer particles released within a shallow, continuously-forced flow by means of numerical simulations. The investigation is motivated by…Lenin M. Flores Ramírez, Leon P. J. Kamp, Herman J. H. Clercx et al.·Apr 4, 2024SaveLearn
Physics Informed Neural Networks for Free Shear FlowsThe transformative impact of machine learning, particularly Deep Learning (DL), on scientific and engineering domains is evident. In the context of computational fluid dynamics (CFD),…Siddharth Raghu, Rajdip Nayek, Vamsi Chalamalla·Apr 4, 2024SaveLearn
A swimming bacterium in a two-fluid model of a polymer solutionWe analyse the motion of a flagellated bacterium in a two-fluid medium using slender body theory. The two-fluid model is useful for describing a body moving through a complex fluid with a…Sabarish V. Narayanan, Donald L. Koch, Sarah Hormozi·Apr 4, 2024SaveLearn
A Dynamic Droplet Breakup Model for Eulerian-Lagrangian Simulation of Liquid-fueled DetonationThis study proposes a dynamic model to reflect the physical image of the droplet breakup process in two-phase detonation flows. This breakup model is implemented in a two-phase detonation solver…Wenhao Wang, Miao Yang, Zongmin Hu et al.·Apr 4, 2024SaveLearn
Preventing mass loss in the standard level set method: New insights from variational analysesFor decades, the computational multiphase flow community has grappled with mass loss in the level set method. Numerous solutions have been proposed, from fixing the reinitialization step to combining…Kaustubh Khedkar, Amirreza Charchi Mamaghani, Pieter Ghysels et al.·Apr 4, 2024SaveLearn
Modelling large mass removal in adsorption columnsA mathematical model is developed to describe column adsorption when the contaminant constitutes a significant amount of the fluid. This requires modelling the variation of pressure and velocity, in…Timothy G. Myers, Marc Calvo-Schwarzwalder, Francesc Font et al.·Apr 3, 2024SaveLearn
Real-fluid simulation of ammonia cavitation in a heavy-duty fuel injectorThe reduction of greenhouse gases (GHG) emitted into the earth's atmosphere, such as carbon dioxide, has obviously become a priority. Replacing fossil fuels with cleaner renewable fuels (such as…Hesham Gaballa, Chaouki Habchi, Jean-Charles de Hemptinne et al.·Apr 3, 2024SaveLearn
A lattice Boltzmann approach for acoustic manipulationWe employ a lattice Boltzmann method to compute the acoustic radiation force produced by standing waves on a compressible object. Instead of simulating the fluid mechanics equations directly, the…E. Castro-Avila, P. Malgaretti, J. Harting et al.·Apr 2, 2024SaveLearn
Elasto-inertial rectification of oscillatory flow in an elastic tubeThe interaction between deformable surfaces and oscillatory driving is known to yield complex secondary time-averaged flows due to inertial and elastic nonlinearities. Here, we revisit the problem of…Xirui Zhang, Bhargav Rallabandi·Apr 2, 2024SaveLearn
Machine learning-based vorticity evolution and superresolution of homogeneous isotropic turbulence using wavelet projectionA wavelet-based machine learning method is proposed for predicting the time evolution of homogeneous isotropic turbulence where vortex tubes are preserved. Three-dimensional convolutional neural…Tomoki Asaka, Katsunori Yoshimatsu, Kai Schneider·Apr 2, 2024SaveLearn
Finite speed of sound effects on asymmetry in multibubble cavitationThree-dimensional direct numerical simulations (DNS) are used to revisit the experiments on multibubble cavitation performed by Bremond et al. (https://doi.org/10.1063/1.2396922, Phys. Fluids 18,…Mandeep Saini, Youssef Saade, Daniel Fuster et al.·Apr 2, 2024SaveLearn
Small-scale magnetohydrodynamic dynamos: from deterministic chaos to turbulenceIt is shown, using results of numerical simulations, and geophysical and solar observations, that the transition from deterministic chaos to hard turbulence in the magnetic field generated by the…A. Bershadskii·Apr 2, 2024SaveLearn
Singularity formation of vortex sheets in 2D Euler equations using the characteristic mapping methodThe goal of this numerical study is to get insight into singular solutions of the two-dimensional (2D) Euler equations for non-smooth initial data, in particular for vortex sheets. To this end high…Julius Bergmann, Thibault Maurel-Oujia, Xi-Yuan et al.·Apr 2, 2024SaveLearn
Hyperviscosity stabilisation of the RBF-FD solution to natural convectionThe numerical stability of fluid flow is an important topic in computational fluid dynamics as fluid flow simulations usually become numerically unstable in the turbulent regime. Many mesh-based…Žiga Vaupotič, Miha Rot, Gregor Kosec·Apr 2, 2024SaveLearn
Paradox of description for motion of a hydrodynamic discontinuity in a potential and incompressible flowHydrodynamic discontinuities in an external potential and incompressible flow are investigated. Using the reaction front as an example in a 2D stream, an overdetermined system of equations is…Maxim Zaytsev, Vyacheslav Akkerman·Apr 2, 2024SaveLearn