Results 41 to 50 of about 7,208 (162)
Multidisciplinary Design Optimization of a Swash-Plate Axial Piston Pump
Applied Sciences, 2016 This work proposes an MDO (multidisciplinary design optimization) procedure for a swash-plate axial piston pump based on co-simulation and integrated optimization.
Guangjun Liu +4 more
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Oscillatory Boundary Layer Flow Over Rippled Beds
Coastal Engineering 1984, 1984 Characteristics of the oscillatory boundary layer flow above rippled beds were investigated through experiments and numerical calculations. Experiments were conducted in an oscillatory flow tunnel. Velocities above symmetric and asymmetric ripples were measured with split-hot-film sensors under conditions of both sinusoidal and asymmetric oscillations.
Shinji Sato +2 more
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Precessive sand ripples in intense steady shear flows
Physical Review E, 2011 We describe experimental observations of fully developed, large-amplitude bars under the action of a shearing fluid. The experiments were performed in an annular tank filled with water and sheared above by a steady motor source. The same steady shearing flow can produce a variety of different erodible bed manifestations: advective or precessive bars ...
Restrepo, J, Moulton, D, Uys, H
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Current Directions in Biomedical Engineering, 2015 The reduction of the pulsation of flow and pressure as well as the increase of the mean flow of a displacement pump will be a benefit to many technical processes, especially in the pharmaceutical industry and in biomedicine.
Klopsch Vincent +2 more
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Selective Laser Melting under Variable Ambient Pressure: A Mesoscopic Model and Transport Phenomena
Engineering, 2021 Recent reports on the selective laser melting (SLM) process under a vacuum or low ambient pressure have shown fewer defects and better surface quality of the as-printed products.
Renzhi Hu +12 more
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Study on transient flow analysis of viscosity fluid in spinning metering pump
AUTEX Research JournalThe spinning metering pump serves as a critical component that delivers the spinning solution with high precision and directly governs the efficiency of wet spinning industrialization.
Zhang Yimin, Cheng Longdi, Zhang Ruiyun
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Jixie chuandong, 2022 In order to solve the two structural problems of trapped oil and large flow ripple in gear pump and based on transmission advantages of cycloid gear and its forming principle，tooth number and radius factor of rolling circle which can best reflect pump ...
Yuncai Xia, Haibin Hao, Yin Mao
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Direct numerical simulations of ripples in an oscillatory flow [PDF]
Journal of Fluid Mechanics, 2019 Sea ripples are small-scale bedforms which originate from the interaction of an oscillatory flow with an erodible sand bed. The phenomenon of sea ripple formation is investigated by means of direct numerical simulation in which the sediment bed is represented by a large number of fully resolved spherical grains (i.e.
Marco Mazzuoli +2 more
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Frequency pattern of turbulent flow and sediment entrainment over ripples using image processing [PDF]
Hydrology and Earth System Sciences, 2012 River channel change and bed scourings are source of major environmental problem for fish and aquatic habitat. The bed form such as ripples and dunes is the result of an interaction between turbulent flow structure and sediment particles at the bed.
A. Keshavarzi, J. Ball, H. Nabavi
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Experimental Study on R32 Flow and Condensation Heat Transfer in Tubes with Enhanced Surface
Zhileng xuebao, 2023 Experiments were conducted to study the condensation heat transfer and pressure drop characteristics of refrigerant R32 in aluminum herringbone tubes, ripple tubes, and smooth tubes. The experimental refrigerant mass flow rate is 100-350 kg/(m2·s).
Liu Xiangzeng +6 more
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