Results 21 to 30 of about 220,072 (264)

Effect of 3-Dimensional Airfoil Shape on Unsteady Fluid Forces in Pitching Motion

open access: yesJournal of Fluid Science and Technology, 2010
A quasi-steady-state approach towards predicting the fluid forces acting on a hand under unsteady conditions yielded errors. The actual motion of a hand in swimming is obviously unsteady, and time-dependent fluid forces must be considered. The purpose of
Hiroaki HASEGAWA   +2 more
doaj   +1 more source

Development of a Simulation Method for Body Behavior during Skydiving and an Analysis of the Most Stable Position

open access: yesJournal of Fluid Science and Technology, 2011
The objective of this study was to develop a simulation method to analyze the body behavior and to clarify the most stable body position while freefalling during a skydive.
Motomu NAKASHIMA, Yuichi OMODA
doaj   +1 more source

Transient Flow Characteristic of High-Pressure Hydrogen Gas in Check Valve during the Opening Process

open access: yesEnergies, 2020
In high-pressure hydrogen systems, the check valve is one of the most easy-to-damage components. Generally, the high-pressure hydrogen flow can generate a strong impact on the check valve, which can cause damage and failure.
Jianjun Ye   +6 more
doaj   +1 more source

Dynamometer Testing of Energy Efficient Hydraulic Fluids and Fuel Savings Analysis for US Army Construction and Material Handling Equipment

open access: yesLubricants, 2022
The US Army uses MIL-PRF-2104 SAE 10 hydraulic fluid in its construction and material handling equipment. This oil meets basic performance requirements but has not been optimized for hydraulic system efficiency.
Jill Bramer, Eric Sattler, Paul Michael
doaj   +1 more source

Numerical analysis for the added mass of oscillating body in viscous fluid

open access: yesJournal of Fluid Science and Technology, 2014
In many fluid-structure interaction problems, the virtual mass, namely, the added mass is one of important interests. In the present study, the authors investigate the validity of a numerical method previously proposed by them in order to specify the ...
Katsuya HIRATA   +4 more
doaj   +1 more source

NUMERICAL CALCULATIONS OF WATER DROP USING A FIREFIGHTING AIRCRAFT

open access: yesApplied Computer Science, 2023
The study involved a numerical analysis of the water dropping process by fixed-wing aircraft. This method, also known as air attack, is used for aerial firefighting, primarily in green areas such as forests and meadows.
Zbigniew CZYŻ   +3 more
doaj   +1 more source

Behavior of dynamic radial thrust acting on a vertical mixed flow pump impeller

open access: yesNihon Kikai Gakkai ronbunshu, 2016
Dynamic fluid forces acting on an impeller of a diffuser type mixed flow pump have been studied. The behavior of the thrust generated by the vortex occurrence in a pump intake sump was investigated.
Yuji KANEMORI, Yasuo HANDA
doaj   +1 more source

Entropy and Entropic Forces to Model Biological Fluids [PDF]

open access: yesProceedings of Entropy 2021: The Scientific Tool of the 21st Century, 2021
Living cells are complex systems that may be characterized by fluids crowded by hundreds of different elements in particular by a high density of polymers; they are an excellent and challenging laboratory to study exotic emerging physical phenomena where entropic forces emerge from organization processes of many-body interactions.
Rafael M. Gutierrez   +3 more
openaire   +5 more sources

Hydration forces at solid and fluid biointerfaces [PDF]

open access: yesBiointerphases, 2016
The authors review the different molecular mechanisms giving rise to the repulsive hydration force between biologically relevant surfaces such as lipid bilayers and bioceramics. As the authors will show, the hydration force manifests itself in very different and subtle ways depending on the substrates.
Shrestha, Buddha R., Banquy, Xavier
openaire   +2 more sources

Behavior of axial thrust caused by intake sump vortices in a vertical mixed flow pump

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Axial thrust forces acting on an impeller of a diffuser type mixed flow pump and the behavior of the axial thrust generated by the vortex occurrence in a pump intake sump were studied.
Yuji KANEMORI, Yasuo HANDA
doaj   +1 more source

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