Lyapunov stability analysis of the chaotic flow past two square cylindersWe investigate the stability of the flow past two side-by-side square cylinders (at Reynolds number 200 and gap ratio 1) using tools from dynamical systems theory. The flow is highly irregular due to…Sidhartha Sahu, George Papadakis·Aug 7, 2025SaveLearn
On the structure and dynamics of secondary flows over multi-column roughness in channel flowSecondary flows induced by spanwise heterogeneous surface roughness play a crucial role in determining engineering-relevant metrics such as surface drag, convective heat transfer, and the transport…A. S. Sathe, W. Anderson, M. Calaf et al.·Aug 7, 2025SaveLearn
Plane-marching PSE wavepacket models for perfectly-expanded twin jetsThe importance of wavepackets in the generation of mixing noise in twin jets is expected by extrapolation of the insights previously obtained from the study of single isolated jets. This work…Iván Padilla-Montero, Daniel Rodríguez, Vincent Jaunet et al.·Aug 7, 2025SaveLearn
Linear response of turbulenceWe study the response of wind tunnel turbulence to perturbations using an active grid. We compare our findings to Kraichnan's linear response result R(k,τd) = (-k2 \: τd2 \: u2)…H. E. Cekli, G. Bertens, W van de Water·Aug 7, 2025SaveLearn
Thermodynamically consistent modelling and simulation of the moving contact line problem in non-isothermal compressible two-phase flowsAccording to the dynamic van der Waals theory, we propose a thermodynamically consistent model for non-isothermal compressible two-phase flows with contact line motion. In this model, fluid…Junkai Wang, Qiaolin He·Aug 7, 2025SaveLearn
Simulation of Non-Premixed, Supersonic Combustion using the Discontinuous Galerkin Method on Fully Unstructured GridsIn this study, three-dimensional simulations of a reacting hydrogen jet in supersonic crossflow using a structure-preserving discontinuous Galerkin (DG) formulation are examined. The hydrogen jet,…Cal J. Rising, Eric J. Ching, Ryan F. Johnson·Aug 6, 2025SaveLearn
On the interaction of fish and marine hydrokinetic turbines: Insights gained through experimental and computational observationsTidal and riverine hydrokinetic turbines offer promising solutions for renewable energy generation in aquatic environments. However, their ecological impact, especially on fish behavior, warrants a…Hossein Seyedzadeh, Mehrshad Gholami Anjiraki, Guglielmo Sonnino Sorisio et al.·Aug 6, 2025SaveLearn
Impact of porous media heterogeneity on convective mixing in a Rayleigh-B\'enard instabilityThis work studies the effect of the heterogeneity of a porous medium on convective mixing. We consider a system where a Rayleigh-B\'enard instability is triggered by a temperature difference between…Rima Benhammadi, Juan J. Hidalgo·Aug 6, 2025SaveLearn
Turbulent Injection assisted by Diffusion Models for Scale Resolving SimulationsThe present research proposes a new memory-efficient method using diffusion models to inject turbulent inflow conditions into Large Eddy Simulation (LES) and Direct Numerical Simulation (DNS) for…Margaux Boxho, Joachim Dominique, Tariq Benarama et al.·Aug 6, 2025SaveLearn
Mathematical formulation of mode-to-mode energy transfers and energy fluxes in compressible turbulenceUnderstanding compressible turbulence is critical for modeling atmospheric, astrophysical, and engineering flows. However, compressible turbulence poses a more significant challenge than…Dhananjay Singh, Harshit Tiwari, Lekha Sharma et al.·Aug 6, 2025SaveLearn
Sparse Narrow-Band Topology Optimization for Large-Scale Thermal-Fluid ApplicationsWe propose a fluid-based topology optimization methodology for convective heat-transfer problems that can manage an extensive number of design variables, enabling the fine geometric features required…Vladislav Pimanov, Alexandre T. R. Guibert, John-Paul Sabino et al.·Aug 6, 2025SaveLearn
Variational mode decomposition analysis of the relationship between low-frequency shock-wave oscillations and buffet cellsThis study investigates the relationship between low-frequency shock-wave oscillations and buffet cells on the main wing of the NASA common research model. The flow conditions were set at a Mach…Yuya Ohmichi, Yosuke Sugioka·Aug 6, 2025SaveLearn
Simulating The Urban Canopy's Impact on Wind-Driven Natural VentilationThe urban canopy affects wind in complex ways, making it challenging to predict wind-driven natural ventilation and cooling in buildings. Using large eddy simulations of coupled outdoor and indoor…Nicholas Bachand, Hesam Salehipour, Catherine Gorle·Aug 6, 2025SaveLearn
Efficiency of turbulenceWe consider the efficiency of turbulence, a dimensionless parameter that characterises the fraction of the input energy stored into a turbulent flow field. We first show that the inverse of the…A Lopez, A Barral, G Costa et al.·Aug 6, 2025SaveLearn
Spatial marching with subgrid-scale local exact coherent structures in non-uniformly curved channel flowWe propose a novel multiple-scale spatial marching method for flows with slow streamwise variation. The key idea is to couple the boundary region equations, which govern large-scale flow evolution,…Runjie Song, Kengo Deguchi·Aug 5, 2025SaveLearn
Particle manipulation by hydrodynamic effects in vortical Stokes flowThe main motivation of this work is the quantitative prediction and description of particle manipulation (displacement across streamlines) in microfluidic flow. Much attention has been paid recently…Xuchen Liu·Aug 5, 2025SaveLearn
Waviness and self-sustained turbulence in plane Couette-Poiseuille flowDirect numerical simulations of a Couette Poiseuille flow were performed near the transition to turbulence to investigate the nonlinear relationship between streak waviness and rolls. This…Manuel Etchevest, Pablo Dmitruk, Supriya Karmakar et al.·Aug 5, 2025SaveLearn
Extending the Duchon-Robert framework for anomalous dissipation to compressible fluid flowsAnomalous dissipation, the persistence of a finite mean kinetic energy dissipation as the Reynolds number tends to infinity, occurs in flows with sufficiently spatially rough velocity fields.…Georgy Zinchenko, Jörg Schumacher·Aug 5, 2025SaveLearn
The coherent structures of EVP Fluid Flow Past a Circular CylinderThis study investigates the impact of elasticity and plasticity on two-dimensional flow past a circular cylinder at Reynolds number Re = 100. Ten direct numerical simulations were performed using…Adrián Corrochano, Kazi Tassawar Iqbal, Saeed Parvar et al.·Aug 5, 2025SaveLearn
Mean velocity profile in stably stratified turbulent channel flowThe Monin-Obukhov Similarity Theory (MOST) is a cornerstone of atmospheric science for describing turbulence in stable boundary layers. Extending MOST to stably stratified turbulent channel flows,…Sanath Kotturshettar, Pedro Costa, Rene Pecnik·Aug 5, 2025SaveLearn
Spatiotemporal wall pressure forecast of a rectangular cylinder with physics-aware DeepU-Fourier neural networkThe wall pressure is of great importance in understanding the forces and structural responses induced by fluid. Recent works have investigated the potential of deep learning techniques in predicting…Junle Liu, Chang Liu, Yanyu Ke et al.·Aug 5, 2025SaveLearn
CFD simulation of a Rushton turbine stirred-tank using open-source software with critical evaluation of MRF-based rotation modelingA critical evaluation of the impact of the Multiple Reference Frame (MRF) technique on steady RANS simulations of a Rushton turbine stirred-tanks is presented. The analysis, based on the open source…Alfred Reid, Riccardo Rossi, Ciro Cottini et al.·Aug 5, 2025SaveLearn
Theoretical estimate and characteristics of electro-vortex flows in cylindrical electrodesElectro-vortex flows (EVF) arise in conducting fluids due to diverging current lines and the non-conservative Lorentz force. They are typically characterized by the S parameter, defined as $S=μ0…Swapnil Soni, Avishek Ranjan·Aug 5, 2025SaveLearn
Water Entry Dynamics of Superhydrophobic and Lubricant-Impregnated Surfaces: A Theoretical and Experimental PerspectiveIn this current work, a comprehensive investigation into the impact dynamics of superhydrophobic and lubricant-impregnated aluminium sphere balls on liquid surfaces were carried out. The study delves…Abhishek Mund, Shubham S. Ganar, Arindam Das·Aug 4, 2025SaveLearn
The role of Lagrangian drift in the generation of surface waves by windA nonlinear stability analysis entirely in the Lagrangian frame is conducted, revealing the fundamental role of the wave-induced mean flow in modifying further wave growth and providing new insight…L. R. Seitz, Mara A. Freilich, Nick Pizzo·Aug 4, 2025SaveLearn