Results 11 to 20 of about 218,919 (202)

Review on Oblique Transition

open access: yes气体物理, 2023
Oblique transition is a transition scenario initiated by a pair of oblique waves with equal but opposite angles. It widely exists in boundary layer flow (over flat plate, cone at zero angle of attack, two-dimensional curved plate etc.), compression ...
Ze-feng DENG, Xi CHEN, Chuan-hong ZHANG
doaj   +1 more source

Structure and Branching of Unstable Modes in a Swirling Flow

open access: yesMathematics, 2021
Swirling has a significant effect on the main characteristics of flow and can lead to its fundamental restructuring. On the flow axis, a stagnation point with zero velocity is possible, behind which a return flow zone is formed.
Vadim Akhmetov
doaj   +1 more source

Electrohydrodynamic Liquid Sheet Instability of Moving Viscoelastic Couple-Stress Dielectric Fluid Surrounded by an Inviscid Gas through Porous Medium

open access: yesFluids, 2022
Viscoelastic liquid sheet of couple-stress type streaming with relative motion into an inviscid gas through porous molium is studied theoretically and quantitatively in this project.
Mohamed Fahmy El-Sayed   +1 more
doaj   +1 more source

Supersonic gas jet stabilization in laser–plasma acceleration

open access: yesHigh Power Laser Science and Engineering, 2023
Supersonic gas jets generated via a conical nozzle are widely applied in the laser wakefield acceleration of electrons. The stability of the gas jet is critical to the electron injection and the reproducibility of the wakefield acceleration.
Zhen-Zhe Lei   +10 more
doaj   +1 more source

Electrohydrodynamic Couette–Poiseuille Flow Instability of Two Viscous Conducting and Dielectric Fluid Layers Streaming through Brinkman Porous Medium

open access: yesMathematics, 2023
The electrohydrodynamic plane Couette–Poiseuille flow instability of two superposed conducting and dielectric viscous incompressible fluids confined between two rigid horizontal planes under the action of a normal electric field and pressure gradient ...
Mohamed F. El-Sayed   +2 more
doaj   +1 more source

Bounds on transport from hydrodynamic stability

open access: yesPhysics Letters B, 2023
It was recently shown that the dispersion relations describing singularities of retarded two-point functions in causal quantum field theories always satisfy the fundamental inequality Imω≤|Imk|, and that several rigorous bounds on transport coefficients ...
L. Gavassino
doaj   +1 more source

Calculation of strength of stilling basins and pressure in downstream water outlet structures [PDF]

open access: yesE3S Web of Conferences, 2023
Calculations performed to determine the strength of the stilling basin and apron of the downstream zone should mainly be carried out, considering the conditions of their stability and strength.
Khidirov Sanatjon   +5 more
doaj   +1 more source

Mesh-free hydrodynamic stability

open access: yesJournal of Computational Physics, 2023
A specialized mesh-free radial basis function-based finite difference (RBF-FD) discretization is used to solve the large eigenvalue problems arising in hydrodynamic stability analyses of flows in complex domains. Polyharmonic spline functions with polynomial augmentation (PHS+poly) are used to construct the discrete linearized incompressible and ...
Tianyi Chu, Oliver T. Schmidt
openaire   +3 more sources

Effect of channel geometry on a density wave induced by gravity and chemoconvection in miscible reacting fluids

open access: yesAIP Advances, 2020
We study a two-layer system of initially separated aqueous solutions of an acid and a base placed in a vertically oriented Hele–Shaw cell. After the reactants, a second-order neutralization reaction begins, which is accompanied by the release of salt ...
D. A. Bratsun   +3 more
doaj   +1 more source

Parametric optimization of FPSO hull dimensions for Brazil field using sophisticated stability and hydrodynamic calculations

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2021
In this study, hull dimensions of an FPSO were optimized to maximize its operability at Brazil field. In contrast with the previous works which have used simplified models to evaluate some indicators related to stability and hydrodynamic performances of ...
Jonghun Lee   +3 more
doaj   +1 more source

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