Results 1 to 10 of about 8,297,853 (296)

Pressure Sensitivity of Buttock and Thigh as a Key Factor for Understanding of Sitting Comfort

open access: yesApplied Sciences, 2022
In seating comfort research, it is known that the pressure should not exceed a certain threshold from the viewpoint of tissue compression and should be widely distributed. However, its ideal distribution is not defined in past research.
Akinari Hirao   +2 more
doaj   +1 more source

Simulation of Water Influx and Gasified Gas Transport during Underground Coal Gasification with Controlled Retracting Injection Point Technology

open access: yesEnergies, 2022
Underground coal gasification (UCG) may change the energy consumption structure from coal-dominated to gas-dominated in the years to come. Before that, three important problems need to be solved, including failure of gasification due to large amounts of ...
Yanpeng Chen   +7 more
doaj   +1 more source

A Laboratory Study of Pressure Distribution and Residual Settlements in Wide Grading Double Layer Railway Ballast under Long-Term Cyclic Loading [PDF]

open access: yesArchives of Civil Engineering, 2020
Ballast layer has weighty share in the lifecycle costs of railway track. The strict standards and maintenance rules of ballast grading significantly contribute to the ballast costs.
Mykola Sysyn   +3 more
doaj   +1 more source

Numerical simulation of the flow and performance of a Savonius hydraulic turbine provided with a shield plate

open access: yesNihon Kikai Gakkai ronbunshu, 2020
The flow and performance of a rotor of a Savonius hydraulic turbine provided with a shield plate were analyzed by the two-dimensional simulations. The rotor diameter DR is 142 mm, and the Reynolds number based on the velocity of the main flow U0, U0DR/ν,
Kotaro TAKAMURE   +5 more
doaj   +1 more source

Optimal Design of a Plenum Fan with Three-Dimensional Blades

open access: yesApplied Sciences, 2020
We successfully designed an optimized plenum fan with a three-dimensional, smooth, curved blade. The optimized model revealed that the static pressure in the channel had been increased uniformly and stably, and the flow separation at the leading edge was
Kyung Jung Lee   +4 more
doaj   +1 more source

Evaluation of pressure distribution around the High-pressure gates using ANFIS [PDF]

open access: yesJournal of Hydraulic Structures
The bottom outlet is essential for dams, controlling reservoir water volume, managing downstream flow, and discharging sediment. Understanding pressure distribution around the high-pressure gate is crucial for assessing risks like cavitation, vibrations,
Hamidreza Sajadi   +2 more
doaj   +1 more source

An Experimental Investigation of Hydrodynamic Journal Bearing with Different Oil Grades [PDF]

open access: yesPort Said Engineering Research Journal, 2019
Journal bearings are known to be intrinsic components in different marine applications. They are regarded as the most instrumental means by which large loads could be transmitted at mean speed of rotation.
Nour Marey
doaj   +1 more source

Research on flow characteristics of aerostatic circular thrust bearing

open access: yesThe Journal of Engineering, 2018
In order to improve the pressure distribution, the aerostatic circular thrust bearing with single supply hole was studied. In the computational fluid dynamics (CFD) simulation, the laminar model, the turbulent model, the mixture model of laminar and ...
Hechun Yu   +4 more
doaj   +1 more source

Heat transfer study in the exploitation of argillaceous‐silt natural gas hydrate reservoirs

open access: yesEnergy Science & Engineering, 2023
The paper investigates the heat transfer in the exploitation of offshore argillaceous‐silt natural gas hydrate reservoirs considering sand control. The temperature prediction model is established in this investigation.
Shuxian Jiang   +5 more
doaj   +1 more source

Gas Flow Simulation in the Working Gap of Impulse Gas-Barrier Face Seal

open access: yesManagement Systems in Production Engineering, 2020
Numerical simulation method of the working process of a centrifugal unit contactless face impulse seal is proposed. A seal functioning physical model was created.
Kuznetsov Eduard   +2 more
doaj   +1 more source

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