Tootfinder

Und das, meine Damen und Herren, ist struktureller Rassismus: Wenn es nämlich kein Problem ist, im Fernsehn auch mal N... und Z... zu sagen, weil ist ja Satiere und Satiere darf ja alles, und da sollen sich die Leute mal nicht so aufregen, ist ja lustig gemeint näh? (Ja, finde ich, der ich schon einige male in meinem Leben so beschimpft wurde und damit sehr traumatische Erinnerungen verbinde auch sehr Lustig, hahaha, hab ich gelacht).
Aber wehe man nennt die Oma eine Umweltsau - da hat…

[2025-06-09 Mon (UTC), 6 new articles found for physics.flu-dyn Fluid Dynamics]
#toXiv_bot_toot #toXiv_bot_new_article_summary_toot

[2025-06-10 Tue (UTC), 3 new articles found for physics.ao-ph Atmospheric and Oceanic Physics]
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[2025-06-10 Tue (UTC), 1 new article found for physics.bio-ph Biological Physics]
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Compression, simulation, and synthesis of turbulent flows with tensor trains
Stefano Pisoni, Raghavendra Dheeraj Peddinti, Egor Tiunov, Siddhartha E. Guzman, Leandro Aolita
https://arxiv.org/abs/2506.05477

Compression, simulation, and synthesis of turbulent flows with tensor trains
Numerical simulations of turbulent fluids are paramount to real-life applications, from predicting and modeling flows to diagnostic purposes in engineering. However, they are also computationally challenging due to their intrinsically non-linear dynamics, which requires a very high spatial resolution to accurately describe them. A promising idea is to represent flows on a discrete mesh using tensor trains (TTs), featuring a convenient scaling of the number of parameters with the mesh size. Howe…

Experimental Study On Flashing-Induced Instabilities In An Open Natural Circulation System
Yuliang Fang, Xiaxin Cao, Wenxi Tian
https://arxiv.org/abs/2506.06213

Experimental Study On Flashing-Induced Instabilities In An Open Natural Circulation System
The natural circulation system (NCS) uses gravity pressure drop caused by density differences in the loop to generate the driving force without any external mechanical devices, which has been widely applied to the design of the nuclear reactor system and the passive safety system due to its simple structure, high intrinsic safety, and strong heat discharge capacity. However, the low-pressure condition can lead to a two-phase flow and make the flow characteristics in the NCS more complex. Flashi…

A Chimera method for high-fidelity simulation of turbulent flows
Andrea Di Mascio, Sergio Pirozzoli
https://arxiv.org/abs/2506.05914 https://

A Chimera method for high-fidelity simulation of turbulent flows
We develop a block-structured solver for high-fidelity simulation of flows in complex geometries, based on overlapping (Chimera) meshes. The key components of the algorithm are a baseline dissipation-free central discretization and selective high-order filtering, which ensure uniform accuracy and minimal numerical diffusion. These favorable properties are preserved through efficient interpolation across overlapping blocks. Numerical tests demonstrate that the method guarantees a uniform order o…

Flow-induced vibration of twin-pipe model with varying mass and damping: A study using virtual physical framework
Jiawei Shen, Shixiao Fu, Xuepeng Fu, Torgeir Moan, Svein S{\ae}vik
https://arxiv.org/abs/2506.05649

Flow-induced vibration of twin-pipe model with varying mass and damping: A study using virtual physical framework
Flow-induced vibration (FIV) commonly occurs in rigidly coupled twin-pipe structures. However, the limited understanding of their FIV responses and hydrodynamic features presents a major challenge to the development of reliable engineering designs. To bridge this gap, the present study systematically investigates the FIV characteristics of a rigidly coupled twin-pipe model with elastic support using a virtual physical framework (VPF), which enables flexible control of structural parameters duri…

Structure functions and flatness of streamwise velocity in a turbulent channel flow
Carlos Granero-Belinchon (ODYSSEY, IMT Atlantique - MEE, Lab-STICC\_OSE), St\'ephane G. Roux (Phys-ENS), Nicolas B. Garnier (Phys-ENS)
https://arxiv.org/abs/2506.05436

Structure functions and flatness of streamwise velocity in a turbulent channel flow
In this article, we present a multiscale characterization of the streamwise velocity of a turbulent channel flow. We study the 2nd and 4th order structure functions and the flatness for scales ranging from the dissipative to the integral domains and for a wide range of distances to the walls spanning four distinct regions of the channel. We characterize the impact of the shear stress induced by the walls on these statistics. Far from the walls, in the outer layer, the impact of the boundaries o…

A comprehensive Darcy-type law for viscoplastic fluids: I. Framework
Emad Chaparian
https://arxiv.org/abs/2506.06184 https://arxiv.or…

A comprehensive Darcy-type law for viscoplastic fluids: I. Framework
A comprehensive Darcy-type law for viscoplastic fluids is proposed. Different regimes of yield-stress fluid flow in porous media can be categorised based on the Bingham number (i.e. the ratio of the yield stress to the characteristic viscous stress). In a recent study (Chaparian, J. Fluid Mech., vol. 980, A14, 2024), we addressed the yield/plastic limit (infinitely large Bingham number), namely, the onset of percolation when the applied pressure gradient is just sufficient to overcome the yield…