HYMOR: An open-source package for global modal, non-modal, and receptivity analysis in high-enthalpy hypersonic vehiclesWe present HYMOR (HYpersonic MOdal/non-modal, and Receptivity), an open-source computational framework for the linear stability analysis of high-enthalpy hypersonic flows. The toolkit includes MATLAB…Adrián Antón-Álvarez, Adrián Lozano-Durán·Jun 23, 2026SaveLearn
On bifurcations and traction forces on an obstacle in incompressible flowA systematic numerical investigation of flow-regime transitions in the two-dimensional incompressible Navier-Stokes flow past a confined circular cylinder is presented. For a fixed benchmark…Jakub Cach, Karel Tůma, Jan Blechta et al.·Jun 23, 2026SaveLearn
Effects of mean flow skew on turbulent shear layers. Part I. Numerical investigationSkewed turbulent shear layers, formed by the interaction between two non-aligned turbulent boundary layers, are investigated using high-fidelity large eddy simulations in a temporally evolving…Vedant Kumar, Dipendra Gupta, Gregory Paul Bewley et al.·Jun 22, 2026SaveLearn
Prediction of Viscoelastic Droplet Impact Dynamics Using a Vision Transformer-Based ApproachDroplet impact on solid surfaces is a complex fluid dynamics problem with applications in spray cooling, inkjet printing, and pharmaceutical processing. Although numerical simulations are widely used…Diego A. de Aguiar, Cassio M. Oishi·Jun 22, 2026SaveLearn
On initiation of detonation in large fuel-air cloudsThe proposed study is motivated by experimental evidence, dating back to 1985, demonstrating the possibility of deflagration-to-detonation transition (DDT) in a fuel-air cloud. The detonation is…Leonid Kagan, Peter V. Gordon, Gregory Sivashinsky·Jun 22, 2026SaveLearn
Scaling patch analysis of turbulent kinetic energy budget equation in wall-bounded flowsThe scaling patch approach is applied to analyze the turbulent kinetic energy (TKE) budget equation in wall-bounded turbulent flows. The balance of the TKE equation is divided into several distinct…Tie Wei, Zhaorui Li, Sergio Pirozzoli·Jun 22, 2026SaveLearn
A Methodology to Quantify Interscale Energy Transfer at Solid BoundariesFar away from solid boundaries, energy can be transferred between different flow scales due to the non-linear self-advection of velocity. This energy transfer can be quantified using well-established…Lennard Miller·Jun 22, 2026SaveLearn
Data assimilation of flow MRI data into RANS models with algebraic closuresWe adopt the Bayesian inference framework to solve an inverse Reynolds-Averaged Navier-Stokes (RANS) problem for the approximate posterior probability distribution of the turbulence model parameters…C. Namuroy, M. P. Juniper, P. Nair et al.·Jun 22, 2026SaveLearn
Scaling of the minimal energy for turbulence transition in pipe flowPredicting the transition of turbulence in pipe flow remains a fundamental problem in fluid dynamics. We use a variational approach to compute nonlinear optimal perturbations to the laminar flow at…Patrick Keuchel, Daniel Morón, Marc Avila·Jun 22, 2026SaveLearn
Non-normal weakly nonlinear analysis: asymptotic consistency and non-universalityNon-normality can induce large transient growth in linearly stable systems. Determining whether this growth triggers a transition in the underlying nonlinear system, however, requires understanding…Matthew McCormack, Gregory P. Chini, Rich R. Kerswell·Jun 22, 2026SaveLearn
Non-monotonic variations in pressure drop and chaos in viscoelastic fluid flows through an ordered microporous mediumSeveral recent experimental studies have revealed non-monotonic variations in elastic turbulence-induced chaotic flow behaviour and pressure drop during the flow of viscoelastic fluids through a…A. Chauhan, C. Sasmal·Jun 22, 2026SaveLearn
A Conservative Time-Accurate Local Time-Stepping DG Scheme Based on a Weakly Compressible Model for Unsteady Low-Mach-Number FlowsThis paper presents a conservative high-order discontinuous Galerkin (DG) method featuring time-accurate local time stepping for simulating low-Mach-number unsteady flows, based on a weakly…Shihao Liu, Keli Zhang, Yuning Luan et al.·Jun 22, 2026SaveLearn
The Asymptotic State of Decaying TurbulenceThe long-time evolution of decaying homogeneous turbulence is a fundamental building block of the subject. We investigate the problem by using a comprehensive suite of Direct Numerical Simulations.…Akash Rodhiya, Katepalli R. Sreenivasan·Jun 22, 2026SaveLearn
On large-scale wind-drift ocean currents: An asymptotic approach in spherical coordinatesStarting from the Navier--Stokes equations in rotating spherical coordinates with depth-varying density and eddy viscosity, we derive an asymptotic model describing non-equatorial wind-generated…Christian Puntini, Luigi Roberti, Eduard Stefanescu·Jun 22, 2026SaveLearn
Optimal navigation in two-dimensional flows: Control theory and reinforcement learningZermelo's navigation problem seeks the trajectory of minimal travel time between two points in a fluid flow. We address this problem for an agent -- such as a floating drone or active particle --…Vladimir Parfenyev·Jun 22, 2026SaveLearn
Bi-stable Nonlinear Energy Sinks (BNESs) for Response Mitigation and Drag Reduction of Subsea Cables Undergoing Vortex-induced VibrationsA methodology for passive mitigation of vortex-induced vibrations (VIVs) in subsea dynamic power cables is developed using optimized, strongly nonlinear bi-stable mass-spring-damper attachments,…Anargyros Michaloliakos, Ryan Davies, Matthew Hall et al.·Jun 21, 2026SaveLearn
Data-driven Augmentation of a Turbulence Model in Three dimensional Separated FlowsClassic turbulence models often struggle to accurately predict complex flows. Although data-driven techniques have addressed these shortcomings, most existing research has concentrated on…Chenyu Wu, Shaoguang Zhang, Yufei Zhang·Jun 21, 2026SaveLearn
Singularity of the axisymmetric stagnation-point-like solution within a cylinder of the 3D Euler incompressible fluid equationsIn this paper we investigate analytically the formation of finite time singularities in the three dimensional incompressible Euler equations under the model of Gibbon, Fokas, and Doering for…Yinshen Xu, Miguel D. Bustamante·Jun 21, 2026SaveLearn
Patched Flow Matching: Generative Wall-Pressure Reconstruction Beyond Training-Domain Scales from Sparse SensorsCharacterizing the complete wall-pressure spectrum in turbulent wall-bounded flows requires simultaneous access to the viscous-scale high-wavenumber content and the outer-layer low-wavenumber content…Meet Hemant Parikh, Yi Liu, Jian-Xun Wang·Jun 20, 2026SaveLearn
Molecular dynamics perspectives on nonideal fluid models for the lattice Boltzmann methodDespite their widespread use, mesoscopic models for non-ideal fluids have rarely been systematically validated against microscopic simulations. In this work, molecular dynamics (MD) simulations of…Hiroshi Otomo, Alexander J. Wagner·Jun 20, 2026SaveLearn
Theory and internal structure of ADER-DG method for partial differential equationsHighly accurate stability boundary values for the ADER-DG method are obtained for arbitrary degrees N of basis polynomials. In the linear case, stability is violated precisely when one of the…I. S. Popov·Jun 20, 2026SaveLearn
Scalar dissipation anomaly and scalar-gradient scaling in turbulence: A joint velocity-scalar multifractal viewWe revisit the problem of scalar dissipation anomaly and scaling of scalar gradients in passive scalar turbulence using theory and data from well-resolved direct numerical simulations (DNS) on grid…Dhawal Buaria·Jun 20, 2026SaveLearn
Nonisothermal global-pressure exactness in fractured multiphase flow with aperture feedbackGlobal-pressure formulations recast multiphase Darcy flow in terms of a single pressure driving the total flux. Their exact equivalence to phase-pressure formulations holds only when the constitutive…Christian Tantardini, Fernando Alonso-Marroquin·Jun 20, 2026SaveLearn
Generalization Capability of Deep Learning for Predicting Drag Reduction in Pulsating Turbulent Pipe Flow with Arbitrary Acceleration and DecelerationThe spatiotemporal evolution of pulsating turbulent pipe flow was predicted by deep learning. A convolutional neural network (CNN) and long short-term memory (LSTM) were employed for long-term…Sota Kumazawa, Yasuhiro Yoshida, Tomohiro Nimura et al.·Jun 20, 2026SaveLearn
Global Buckley-Leverett theory for multicomponent flow in fractured media: Isothermal equation-of-state coupling and dynamic capillarityWe present an isothermal Global Buckley--Leverett framework for multicomponent, multiphase flow in porous and fractured media that retains the interpretability of classical Buckley--Leverett while…Christian Tantardini, Fernando Alonso-Marroquin·Jun 20, 2026SaveLearn