Results 11 to 20 of about 220,072 (264)

Flow-Induced Motion and Energy Conversion of the Cir-T-Att Oscillator in a Flow Field with a High Reynolds Number

Journal of Marine Science and Engineering, 2023
The present study aims to systematically investigate the effects of a high Reynolds number on the flow-induced motion and energy conversion of the Cir-T-Att oscillator. Experiments are conducted in six Reynolds number ranges (2.89 × 104~6.51 × 104 < Re <
Danjie Ran, Jijian Lian, Xiang Yan, Fang Liu, Nan Shao, Xu Yang, Lingfan Li   +6 more
doaj   +1 more source

Study of Effect of Convergence Section Geometric on the Performance of a Sonic Nozzle [PDF]

Journal of Applied Fluid Mechanics
Critical flow Venturi nozzles (toroidal, cylindrical, convergent–divergent, or    C–D) nozzles) have discharge coefficients predicted through numerical and experimental investigations.
F. A. Kassem, A. A. Zahran, M. Adel
doaj   +1 more source

Clarification of Unsteady Fluid Forces Acting on Limbs in Swimming Using an Underwater Robot Arm

Journal of Fluid Science and Technology, 2012
The objective of this study was to clarify the unsteady characteristics of the fluid forces acting on limbs during swimming. For this objective, an underwater robot arm was developed in this paper.
Motomu NAKASHIMA, Akemi TAKAHASHI
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Flow Behavior Caused by Air Permeability of Ski Jumping Suit Fabric

Proceedings, 2020
The purpose of this study was to investigate the effect of the air permeability of ski jumping suit fabric on aerodynamic characteristics. In the study, four types of fabric with different air permeabilities were installed onto a fabric-clothed elliptic ...
Yuki Kataoka, Hiroaki Hasegawa, Masahide Murakami, Kazuya Seo, Shigeru Obayashi   +4 more
doaj   +1 more source

Development of small-size and light-weight aerodynamic brake for high-speed railway

Nihon Kikai Gakkai ronbunshu, 2019
To shorten the stopping distance of the high-speed trains in case of emergency such as a huge earthquake, the author developed the small-size and light-weight aerodynamic braking device.
Hajime TAKAMI
doaj   +1 more source

Evaluation for particles capturing in magnetic separation using magnetic particles movement simulation (Effects of number of magnets, magnet arrangements, and magnetic coercive force)

Nihon Kikai Gakkai ronbunshu, 2014
An analysis program of predicting the movement of magnetic particles in flow, gravity, and magnetic fields was applied for magnetic separation process in a small vessel of an in-vitro diagnostic system.
Toru INABA, Shinya MATSUOKA, Yoshihiro YAMASHITA, Taku SAKAZUME   +3 more
doaj   +1 more source

Numerical Analysis of Flow Characteristics in Impeller-Guide Vane Hydraulic Coupling Zone of an Axial-Flow Pump as Turbine Device

Journal of Marine Science and Engineering, 2023
An axial-flow pump as a turbine (PAT), as compared to the conventional Francis turbine, has the advantages of not being restricted by the terrain and having lower cost to reverse the pump as a turbine for power generation.
Fan Yang, Zhongbin Li, Yuting Lv, Jindong Li, Guangxin Zhou, Ahmed Nasr   +5 more
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Numerical calculations on the flow near the plunging airfoil and relation with the flying or swimming animals, birds, fish and insects

Journal of Fluid Science and Technology, 2015
We investigated the influence of the airfoil geometry on the performance of the plunging airfoil numerically. In the present study, two circular arc airfoils with the different thickness were used and the numerical calculations were carried out within ...
Masahide NAKAMURA, Yuki MURASHITA, Orie TAMURA   +2 more
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Numerical Investigation of the Effectiveness of Vegetation-Embankment Hybrid Structures for Tsunami Mitigation Introduced after the 2011 Tsunami

Geosciences, 2021
As a mitigation measure against a tsunami inundation, vegetation-embankment hybrid structures received attention after the 2011 Great East Japan Tsunami, and some structures have already been constructed or are under construction in Japan.
Norio Tanaka, Yoshiya Igarashi, Takehito Zaha   +2 more
doaj   +1 more source

Optimization of Sluice Gate under Fatigue Life Subjected for Forced Vibration by Fluid Flow

Journal of Mechanical Engineering, 2018
A ‘Sluice’ is a water-flow control gate works with sliding. So, it’s a mill race, flume or a penstock, channelling water towards a water mill, traditionally a wood or metal barrier sliding in grooves that are set in the sides of the waterway.
Poornakanta Handral, Kadam Kartik, Pawar Darshan, Medar Kiran, Makandar Iliyas, Patil Arun Y., Kotturshettar Basavaraj B.   +6 more
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