Results 1 to 10 of about 161,053 (166)

Effect of the Diameter of Pressure-Balance Pipe on Axial Hydraulic Thrust [PDF]

open access: goldJournal of Marine Science and Engineering, 2021
The axial hydraulic thrust has great influence on the safety and stability of a pump turbine. A common way to balance hydraulic thrust is to install a pressure-balance pipe, and the change in pipe diameter is one of the important factors affecting axial ...
Fei Zhang   +3 more
doaj   +2 more sources

Structural design and performance study of primitive triply periodic minimal surfaces Ti6Al4V biomimetic scaffold

open access: yesScientific Reports, 2022
This paper comprehensively evaluated the static mechanical compressive properties, permeability, and cell adhesion effect on the inner wall of the Primitive triply periodic minimal surface Ti6Al4V bionic scaffolds with different axial diameter ratios ...
Yaru Qin   +5 more
doaj   +1 more source

New Estimates of Numerical Values Related to a Simplex

open access: yesМоделирование и анализ информационных систем, 2017
Let \(n\in {\mathbb N}\) and \(Q_n=[0,1]^n\). For a nondegenerate simplex \(S\subset {\mathbb R}^n\), by \(\sigma S\) we denote the homothetic copy of~\(S\) with center of homothety in the center of gravity of \(S\) and ratio of~homothety \(\sigma\). By
Mikhail V. Nevskii, Alexey Yu. Ukhalov
doaj   +1 more source

On n-Dimensional Simplices Satisfying Inclusions S ⊂ [0, 1]n ⊂ nS

open access: yesМоделирование и анализ информационных систем, 2017
Let  \(n\in{\mathbb N}\),  \(Q_n=[0,1]^n.\) For a nondegenerate simplex  \(S\subset {\mathbb R}^n\), by  \(\sigma S\) we denote the homothetic image of  \(S\) with the center of homothety in the center of gravity of  \(S\) and ratio of homothety ...
Mikhail V. Nevskii, Alexey Y. Ukhalov
doaj   +1 more source

Influence of Balance Hole Diameter on Leakage Flow of the Balance Chamber in a Centrifugal Pump

open access: yesShock and Vibration, 2021
The balancing holes in centrifugal pumps with seals mounted in both suction and discharge sides are one of the approaches used by pump manufacturers to reduce the axial thrust. The balance hole diameter directly affects the axial force of the centrifugal
Wei Dong   +5 more
doaj   +1 more source

Numerical Simulation of Rock Uniaxial Compressive Strength and Deformation Failure Law under Different Size Conditions

open access: yesAdvances in Civil Engineering, 2021
Rock engineering occupies an important position in the 21st century. In the face of rock engineering disasters, we are only looking for the essential problems through experiments on rocks, but rock experiments cannot be realized in large numbers, so the ...
Zhichao Tian   +4 more
doaj   +1 more source

Cyclic axial compressive performance of hybrid double-skin tubular square columns

open access: yesFrontiers in Materials, 2023
This paper presents an experimental study on the cyclic axial compressive behavior of FRP-concrete-steel hybrid double-skin tubular columns. The square column specimens were cast with an external Fiber Reinforced Polymer jackets, inner steel tube and ...
Dai Wang   +4 more
doaj   +1 more source

On Numerical Characteristics of а Simplex and their Estimates

open access: yesМоделирование и анализ информационных систем, 2016
Let \(n\in {\mathbb N}\), and let \(Q_n=[0,1]^n\) be the \(n\)-dimensionalunit cube. For a nondegenerate simplex \(S\subset {\mathbb R}^n\), by\(\sigma S\) we denote the homothetic image of \(S\)with the center of homothety in the center of gravity of S ...
M. V. Nevskii, A. Yu. Ukhalov
doaj   +1 more source

Study on Restraining Cavitation of Axial Piston Pump Based on Structure of Cylinder Block and Valve Plate Triangular Throttling Groove

open access: yesShock and Vibration, 2022
Raising the rotational speed is an effective way to improve the power density of axial piston pump, but high rotational speed tends to cause plunger cavity and valve plate throttling groove cavitation.
Sun Zegang   +3 more
doaj   +1 more source

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