Results 41 to 50 of about 6,264 (285)

Turbulent flow interacting with flexible trawl net structure including simulation catch in flume tank

Scientific Reports, 2023
The interaction between fluid and the midwater trawl with stocked catches is extremely complex, but essential to improve the understanding of the drag force acting on the trawl, the behavior of the fishing structure during a trawling process, and to ...
Bruno Thierry Nyatchouba Nsangue, Hao Tang, Wei Liu, Liuxiong Xu, Fuxiang Hu   +4 more
doaj   +1 more source

Structure of unsteady stably stratified turbulence with mean shear. [PDF]

, 2004
The statistics of unsteady turbulence with uniform stratification N (Brunt–Väisälä frequency) and shear α(=dU1/dx3) are analysed over the entire time range (00 and \it Ri>0.25 respectively, oscillatory momentum and positive and negative density fluxes ...
Hanazaki, H, J. C. R. Hunt, Hanazaki, H., H. Hanazaki, Hunt, J.C.R., Hunt, JCR, Hanazaki, H. (author), Hunt, J.C.R. (author)   +7 more
core   +1 more source

Influence of wing kinematics on aerodynamic performance in hovering insect flight [PDF]

, 2007
The influence of different wing kinematic models on the aerodynamic performance of a hovering insect is investigated by means of two-dimensional time-dependent Navier–Stokes simulations.
Bijl, H., Oudheusden, B.W., van, Van Oudheusden, B.W., Bos, F.M. (author), Lentink, D. (author), Van Oudheusden, B.W. (author), Bijl, H. (author), Bos, F.M., Lentink, D.   +8 more
core   +1 more source

Simulation on Unsteady Crosswind Forces of a Moving Train in a Three-Dimensional Stochastic Wind Field

Applied Sciences, 2022
Unsteady aerodynamic forces are significantly critical to the safety and stability of trains traveling in high winds. This paper describes a study into unsteady crosswind forces of a moving train subjected to a three-dimensional stochastic wind field ...
Zhiyong Yao, Nan Zhang, Xiaoda Li, Zongchao Liu   +3 more
doaj   +1 more source

Hydrodynamic force on a small squirmer moving with a time-dependent velocity at small Reynolds numbers [PDF]

, 2023
We calculate the hydrodynamic force on a small spherical, unsteady squirmer moving with a time-dependent velocity in a fluid at rest, taking into account convective and unsteady fluid inertia effects in perturbation theory.
Mehaddi, Rabah, Mehlig, B., Candelier, F., Eloy, C., Mehaddi, R., Redaelli, T., Mehlig, Bernhard,   +6 more
core   +2 more sources

Mixed Convective MHD Micro-Polar Fluid Flow in a Porous Medium with Radiation Absorption [PDF]

International Journal of Mathematical, Engineering and Management Sciences, 2019
An unsteady mixed convective flow of micro-polar fluid in a porous medium has been considered in presence of transverse magnetic field, Dufour effects and radiation. Effects of radiation absorption and heat source/sink are taken into account.
Debasish Dey
doaj   +1 more source

Inertial dynamics of air bubbles crossing a horizontal fluid–fluid interface [PDF]

, 2012
The dynamics of isolated air bubbles crossing the horizontal interface separating two Newtonian immiscible liquids initially at rest are studied both experimentally and computationally.
Duval, Fabien, Piar, Bruno, Magnaudet, Jacques, Bonhomme, Romain   +3 more
core   +1 more source

On the Friction and Wear Mechanisms of Electrified Steel Contacts in CO2: Unveiling the Role of Carbon‐Rich Tribofilms Under Dry Sliding Conditions

Advanced Materials Interfaces, EarlyView.
This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos, Seungjoo Lee, Cagatay Yelkarasi, Leonardo I. Farfan‐Cabrera, Ryuichi Okamoto, Hitoshi Washizu, Ali Erdemir   +6 more
wiley   +1 more source

A Lagrangian Approach to Transport of Momentum and Biomass in Aquatic Biological Systems [PDF]

, 2010
In recent years, a Lagrangian Coherent Structures (LCS) method was developed to identify boundaries between distinct kinematic regions in unsteady flows.
Peng, Jifeng
core   +1 more source

Study on the Intelligent Modeling of the Blade Aerodynamic Force in Compressors Based on Machine Learning

Mathematics, 2021
In order to obtain the aerodynamic loads of the vibrating blades efficiently, the eXterme Gradient Boosting (XGBoost) algorithm in machine learning was adopted to establish a three-dimensional unsteady aerodynamic force reduction model.
Mingming Zhang, Shurong Hao, Anping Hou
doaj   +1 more source