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We study the stability of a steady Eckart streaming jet that is acoustically forced at one end of a closed cylindrical cavity and impinges the wall at the other end, where a recirculation forms. This configuration generically represents…

流体动力学 · 物理学 2025-04-04 Bjarne Vincent , Abhishek Kumar , Daniel Henry , Sophie Miralles , Valéry Botton , Alban Pothérat

Zonal jets and non-zonal large-scale flows are often present in forced-dissipative barotropic turbulence on a beta-plane. The dynamics underlying the formation of both zonal and non-zonal coherent structures is investigated in this work…

大气与海洋物理 · 物理学 2015-05-05 Nikolaos A. Bakas , Navid C. Constantinou , Petros J. Ioannou

The formation mechanism of the W50/SS433 complex has long been a mystery. We propose a new scenario in which the SS433 jets themselves form the W50/SS433 system. We carry out magnetohydrodynamics simulations of two-side jet propagation…

高能天体物理现象 · 物理学 2021-04-14 Takumi Ohmura , Kojiro Ono , Haruka Sakemi , Yuta Tashima , Rikuto Omae , Mami Machida

Many traditional methods for wind turbine design and analysis assume quasi-steady aerodynamics, but atmospheric flows are inherently unsteady and modern turbine blades are susceptible to aeroelastic deformations. This study therefore…

流体动力学 · 物理学 2024-06-18 Nathaniel J. Wei , Omkar B. Shende

Compound flows consist of two or more parallel compressible streams in a duct and their theoretical treatment has gained attention for the analysis and modelling of ejectors. Recent works have shown that these flows can experience choking…

流体动力学 · 物理学 2024-12-04 Jan Van den Berghe , Miguel Alfonso Mendez , Yann Bartosiewicz

We study a liquid jet that breaks up into drops in an external co-flowing liquid inside a confining microfluidic geometry. The jet breakup can occur right after the nozzle in a phenomenon named dripping or through the generation of a liquid…

流体动力学 · 物理学 2015-05-20 María Luisa Cordero , François Gallaire , Charles N. Baroud

Classic turbulence models often struggle to accurately predict complex flows. Although data-driven techniques have addressed these shortcomings, most existing research has concentrated on two-dimensional (2D) cases. This study bridges this…

流体动力学 · 物理学 2025-12-19 Chenyu Wu , Shaoguang Zhang , Yufei Zhang

This work aims to estimate time-resolved velocity field that is directly associated with pressure fluctuations in a subsonic round jet. To achieve this goal, synchronous measurements of the velocity field and in-flow pressure fluctuations…

流体动力学 · 物理学 2021-06-15 Songqi Li , Lawrence Ukeiley

Planetary turbulence is observed to self-organize into large-scale structures such as zonal jets and coherent vortices. One of the simplest models that retains the relevant dynamics of turbulent self-organization is a barotropic flow in a…

大气与海洋物理 · 物理学 2015-01-22 Nikolaos A. Bakas , Petros J. Ioannou

The jet shape is a classic jet substructure observable that probes the average transverse energy profile inside a reconstructed jet. The studies of jet shapes in proton-proton collisions have served as precision tests of perturbative…

高能物理 - 唯象学 · 物理学 2015-06-19 Yang-Ting Chien , Ivan Vitev

PROJET is a parton level Monte Carlo program for the calculation of jet cross sections in deeply inelastic electron proton scattering. In its present version it contains the Born level diagrams for the production of (1+1), (2+1) and (3+1)…

高能物理 - 唯象学 · 物理学 2009-10-28 Dirk Graudenz

A novel jet-stirred combustion chamber is designed to study turbulent premixed flames. In the new approach, multiple impinging turbulent jets are used to stir the mixture. It is well known that pair of counterflowing turbulent jets produces…

流体动力学 · 物理学 2017-12-07 Abbasali A. Davani , Paul D. Ronney

We compare results from a relativistic and a nonrelativistic set of 2D axisymmetric jet simulations. For a set of five relativistic simulations that either increase the Lorentz factor or decrease the adiabatic index we compute…

天体物理学 · 物理学 2009-10-31 A. Rosen , P. A. Hughes , G. C. Duncan , P. E. Hardee

This research computationally investigates the complex dynamic stall phenomena of a cross-flow turbine blade utilizing modal analysis to identify pertinent events within the cycle. The blade rotation perpendicular to the freestream…

流体动力学 · 物理学 2023-09-13 Mukul Dave , Jennifer A. Franck

We review recent relativistic hydrodynamic simulations of jets, and their interpretation in terms of the results from linear stability analysis. These studies show that, interpreted naively, the distribution of synchrotron intensity will in…

天体物理学 · 物理学 2007-05-23 Philip A. Hughes

Astrophysical jets are often observed as bent or curved structures. We also know that the different jet sources may be binary in nature, which may lead to a regular, periodic motion of the jet nozzle, an orbital motion or precession. Here,…

高能天体物理现象 · 物理学 2022-07-20 Christian Fendt , Melis Yardimci

Turbulent flow around a swept back circular cylinder was investigated experimentally using one or two small sweeping jets emanating tangentially to the surface and orthogonal to the axis of the cylinder creating a yawing moment that…

流体动力学 · 物理学 2023-01-31 Harshad Kalyankar , Lutz Taubert , Israel Wygnanski

Studies of the knotty jets in both quasars and microquasars frequently make use of the ratio of the intensities of corresponding knots on opposite sides of the nucleus in order to infer the product of the intrinsic jet speed (beta) and the…

天体物理学 · 物理学 2016-08-30 James C. A. Miller-Jones , Katherine M. Blundell , Peter Duffy

The purpose of this article is to explore the role of viscoelastic properties of polymeric solutions on the jet mode in the electrospray process. In this research, several numerical simulations were performed to model the behavior of…

流体动力学 · 物理学 2024-03-18 Amirreza Panahi , Ahmad Reza Pishevar , Mohammad Reza Tavakoli

In the past, normalizing generative flows have emerged as a promising class of generative models for natural images. This type of model has many modeling advantages: the ability to efficiently compute log-likelihood of the input data, fast…

计算机视觉与模式识别 · 计算机科学 2024-12-20 Alexander Kolesnikov , André Susano Pinto , Michael Tschannen