Results 41 to 50 of about 71,336 (264)

Collective Dynamics of Interacting Particles in Unsteady Flows

open access: yes, 2014
We use the Fokker-Planck equation and its moment equations to study the collective behavior of interacting particles in unsteady one-dimensional flows.
Abedi, Maryam, Jalali, Mir Abbas
core   +1 more source

Critical Stokes number for the capture of inertial particles by recirculation cells in 2D quasi-steady flows [PDF]

open access: yes, 2016
Inertial particles are often observed to be trapped, temporarily or permanently, by recirculation cells which are ubiquitous in natural or industrial flows.
Angilella, Jean-Régis, Verjus, Romuald
core   +3 more sources

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

open access: yesInternational 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

Unsteady Fluid Forces on a Blade in a Cross-Flow Turbine.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1993
The internal flow in a cross-flow turbine is nonuniform because the water passes through only part of the runner. Therefore, the unsteady fluid forces act on a blade through rotation. The experimental and theoretical studies for determination of fluid forces on the blade in a cross-flow turbine are conducted.
Junichiro Fukutomi   +3 more
openaire   +3 more sources

Effects of Cavitation on Rotordynamic Force Matrices [PDF]

open access: yes, 1988
When designing a turbomachine, particularly one which is to operate at high speed, it is important to be able to predict the fluid-induced forces, both steady and unsteady, acting on the various components of the machine.
Arndt, N., Brennen, C. E., Franz, R.
core  

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

open access: yesAdvanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska   +2 more
wiley   +1 more source

Measurement and Modeling of Unsteady Fluid Force Acting on the Trunk of a Swimmer Using a Swimmer Mannequin Robot

open access: yesJournal of Fluid Science and Technology, 2012
The objectives of this study were to measure the unsteady fluid force acting on the trunk of a swimmer using the ‘swimmer mannequin robot’ and to model the fluid forces based on the formulation of the swimming human simulation model SWUM ...
Motomu NAKASHIMA, Yusuke EJIRI
doaj   +1 more source

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

open access: yesMathematics, 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

Note on the induced Lagrangian drift and added-mass of a vortex [PDF]

open access: yes, 2006
Darwin (1953) introduced a simple heuristic that relates the Lagrangian fluid drift induced by a solid body propagating in irrotational flow to its virtual- or added-mass. The force required to accelerate the solid body must also overcome this added-mass.
Dabiri, John O.
core   +2 more sources

Enhancing the Ultrasonic Welding of Wood Using 3D Printed Lignin Energy Directors

open access: yesAdvanced Science, EarlyView.
Sustainable manufacturing for lightweight structures using ecofriendly materials will be key to reducing material consumption and lowering carbon footprints. Here, an approach is presented to weld wood using ultrasonic vibrations with material at the joint interface to direct energy.
Muhamad Amani   +6 more
wiley   +1 more source

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