A face-centred finite volume method for laminar and turbulent incompressible flowsThis work develops, for the first time, a face-centred finite volume (FCFV) solver for the simulation of laminar and turbulent viscous incompressible flows. The formulation relies on the…Luan M. Vieira, Matteo Giacomini, Ruben Sevilla et al.·Mar 3, 2024SaveLearn
Temperature, Pressure, Velocity, and Water Vapor Mole Fraction Profiles in a Ramjet Combustor using Dual Frequency Comb Spectroscopy and a High Temperature Absorption DatabaseAccurate diagnostics of the combustor region of ramjet engines can improve engine design and create benchmarks for computational fluid dynamics models. Previous works demonstrate that dual frequency…David Yun, Scott C. Egbert, Nathan A. Malarich et al.·Mar 3, 2024SaveLearn
Self-Lubricating DropsOver the past decade, there has been a growing interest in the study of multicomponent drops. These drops exhibit unique phenomena, as the interplay between hydrodynamics and the evolving…Huanshu Tan, Detlef Lohse, Xuehua Zhang·Mar 2, 2024SaveLearn
Volume diffusion modelling of a sheared granular gasContinuum fluid dynamic models based on the Navier-Stokes equations have previously been used to simulate granular media undergoing fluid-like shearing. These models, however, typically fail to…Duncan Dockar, M. H. Lakshminarayana Reddy, Matthew K. Borg et al.·Mar 2, 2024SaveLearn
Droplet dynamics in homogeneous isotropic turbulence with the immersed boundary-lattice Boltzmann methodWe develop a numerical method for simulating the dynamics of a droplet immersed in a generic time-dependent velocity gradient field. This approach is grounded on the hybrid coupling between the…Diego Taglienti, Fabio Guglietta, Mauro Sbragaglia·Mar 2, 2024SaveLearn
Iterative Methods for Navier--Stokes Inverse ProblemsEven when the partial differential equation underlying a physical process can be evolved forward in time, the retrospective (backward in time) inverse problem often has its own challenges and…Liam O'Connor, Daniel Lecoanet, Evan H. Anders et al.·Mar 1, 2024SaveLearn
Quantum spin representation for the Navier-Stokes equationWe develop a quantum representation for Newtonian viscous fluid flows by establishing a mapping between the Navier-Stokes equation (NSE) and the Schr\"odinger-Pauli equation (SPE). The proposed…Zhaoyuan Meng, Yue Yang·Mar 1, 2024SaveLearn
Pair correlation function of vorticity in a coherent vortexWe study the correlations of vorticity fluctuations inside a coherent vortex resulting from the inverse energy cascade in two-dimensional turbulence. The presence of a coherent flow, which is a…I. V. Kolokolov, V. V. Lebedev, M. M. Tumakova·Mar 1, 2024SaveLearn
Slender vortex filaments in the Boussinesq ApproximationA model for the motion of slender vortex filaments is extended to include the effect of gravity. The model, initially introduced by Callegari and Ting (SIAM, J. of App. Math., (1978), vol. 35, pp.…Marie Rodal, Daniel Margerit, Rupert Klein·Mar 1, 2024SaveLearn
Inertia onset in disordered porous media flowWe investigate the very onset of the inertial regime in the fluid flow at the pore level in a three-dimensional, disordered, highly porous media. We analyze the flow structure in a wide range of…Damian Sniezek, Sahrish B. Naqvi, Maciej Matyka·Mar 1, 2024SaveLearn
Eckart streaming with nonlinear high-order harmonics: an example at gigahertzAcoustic streaming shows great potential in applications such as bubble dynamics, cell aggregation, and nano-sized particle isolation in the biomedical and drug industries. As the acoustic shock…Shiyu Li, Weiwei Cui, Thierry Baasch et al.·Mar 1, 2024SaveLearn
Long-time emergent dynamics of liquid films undergoing thermocapillary instabilityThe study of viscous thin film flow has led to the development of highly nonlinear partial differential equations that model how the evolution of the film height is affected by different forces. We…Steven A Kedda, Michael C Dallaston, Scott W McCue·Mar 1, 2024SaveLearn
Data-driven transient lift attenuation for extreme vortex gust-airfoil interactionsWe present a data-driven feedforward control to attenuate large transient lift experienced by an airfoil disturbed by an extreme level of discrete vortex gust. The current analysis uses a nonlinear…Kai Fukami, Hiroya Nakao, Kunihiko Taira·Mar 1, 2024SaveLearn
Wave and turbulence separation using dynamic mode decompositionSeparating the effects of waves and turbulence in oceanographic time series is an ongoing challenge because surface wave motion and turbulence fluctuations can occur at overlapping frequencies.…Julio Chávez-Dorado, Isabel Scherl, Michelle DiBenedetto·Mar 1, 2024SaveLearn
Trade-off between reconstruction accuracy and physical validity in modeling turbomachinery PIV data by Physics-Informed CNNParticle Image Velocimetry (PIV) data is a valuable asset in fluid mechanics. It is capable of visualizing flow structures even in complex physics scenarios, such as the flow at the exit of the rotor…Maryam Soltani, Ghasem Akbari, Nader Montazerin·Feb 29, 2024SaveLearn
Modal analysis of high-fidelity simulations in turbomachineryWe revisit recently published high-fidelity implicit large eddy simulation datasets obtained with a high-order discontinuous Galerkin spectral element method and analyse them using Proper Orthogonal…Christian Morsbach, Bjoern F. Klose, Michael Bergmann et al.·Feb 29, 2024SaveLearn
Periodic dynamics in viscous fingeringThe displacement of a viscous liquid by air in the narrow gap between two parallel plates - a Hele-Shaw channel - is an exemplar of complex pattern formation. Typically, bubbles or fingers of air…Jack Lawless, Andrew L. Hazel, Anne Juel·Feb 29, 2024SaveLearn
Block Spectral Stresses (BSS) estimation for shock-capturing and turbulent modelingA new combined sub-filter scale turbulence and shock-capturing model is developed for high-order finite volume numerics, extending previous work to unstructured solvers. Block Spectral Stresses (BSS)…Matteo Ruggeri, Victor C. B. Sousa, Carlo Scalo·Feb 29, 2024SaveLearn
Internal heating profiles for which downward conduction is impossibleWe consider an internally heated fluid between parallel plates with fixed thermal fluxes. For a large class of heat sources that vary in the direction of gravity, we prove that $δ T…Ali Arslan, Giovanni Fantuzzi, John Craske et al.·Feb 29, 2024SaveLearn
Tailor-designed models for the turbulent velocity gradient through normalizing flowSmall-scale turbulence can be comprehensively described in terms of velocity gradients, which makes them an appealing starting point for low-dimensional modeling. Typical models consist of stochastic…Maurizio Carbone, Vincent J. Peterhans, Alexander S. Ecker et al.·Feb 29, 2024SaveLearn
Couette flow turbulence reduction by the flow spanwise reflection symmetry breaking: On the universality of the control strategyA novel turbulence control strategy for wall-bounded shear flow is proposed by Chagelishvili et al, 2014. The essence of this strategy involves continuously imposition of specially designed seed…George Khujadze, David Gogichaishvili, George Chagelishvili·Feb 29, 2024SaveLearn
How small droplets form in turbulent multiphase flowsThe formation of small droplets and bubbles in turbulent flows is a crucial process in geophysics and engineering, whose underlying physical mechanism remains a puzzle. In this letter, we address…Marco Crialesi-Esposito, Guido Boffetta, Luca Brandt et al.·Feb 29, 2024SaveLearn
Two-scale model of quasi-steady flow of electrolyte in weakly piezoelectric porous mediaThis paper presents a new homogenized model of two-component electrolyte transport through a weakly piezoelectric porous medium. The model relevant to the microscopic scale describes quasi-stationary…Jana Camprová Turjanicová, Eduard Rohan·Feb 29, 2024SaveLearn
High-fidelity simulations of microramp-controlled shock wave/boundary layer interactionMicrovortex generators (MVGs) are a promising solution to control shock wave/turbulent boundary layer interactions (SBLIs). This study examines the effects of a microramp VG on an SBLI generated by…Giacomo Della Posta, Emanuele Martelli, Francesco Salvadore et al.·Feb 29, 2024SaveLearn
Deforming ice with dropsA uniform solidification front undergoes non-trivial deformations when encountering an insoluble dispersed particle in a melt. For solid particles, the overall deformation characteristics are…Duco van Buuren, Pallav Kant, Jochem G. Meijer et al.·Feb 29, 2024SaveLearn