Results 21 to 30 of about 2,098,811 (294)

On the structure and origin of pressure fluctuations in wall turbulence: predictions based on the resolvent analysis [PDF]

open access: yes, 2014
We generate predictions for the fluctuating pressure field in turbulent pipe flow by re-formulating the resolvent analysis of McKeon & Sharma (2010) in terms of the so-called primitive variables. Under this analysis, the nonlinear convective terms in
Luhar, M., Sharma, A.S., McKeon, B.J.
core   +1 more source

Numerical Modeling of the Effect of Changing the Geometry of Fishway Structure on the Flow-Through Its Vertical Slot [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2019
In the present study, hydraulics of vertical slot is simulated, using Flow-3D. k-ε turbulence model had the most performance among different turbulence models.
Mohammad Shokrollahi   +2 more
doaj   +1 more source

Cause and Countermeasure Analysis of Severe Weight-on-bit Congestion in Small Angle Deviated Hole Interval

open access: yesShiyou jixie, 2021
In order to solve the severe weight-on-bit(WOB)congestion problem in small angle deviated hole interval, this article analyzed the main reasons for the occurrence of steps or slopes on borehole wall, built a WOB transfer law analysis model for bent ...
Lu Zongyu   +4 more
doaj  

Development of a Flexible MEMS Sensor for Subsonic Flow

open access: yesMicromachines, 2022
Detection and control of flow separation is a key to improving the efficiency of fluid machinery. In this study, we developed a flexible MEMS (microelectromechanical systems) sensor for measuring the wall shear stress and flow angle in subsonic airflow ...
Koichi Murakami   +7 more
doaj   +1 more source

Active State Earth Pressure based on Dubrova’s Method of Redistribution of Pressure

open access: yesElectronic Journal of Structural Engineering, 2018
Modes and magnitude of wall movement have great influence on the distribution of earth pressure behind retaining wall. For gravity retaining wall exerted by cohesionless soil rotating outward about the base, based on Dubrova’s method of redistribution ...
S.C. Wang, F. Xu, Y. Shao
doaj   +1 more source

Numerical Study of the Fluid Flow and Erosion-Corrosion in an Industrial Valve [PDF]

open access: yesIranian Journal of Chemical Engineering, 2023
The purpose of this research is CFD modeling of the fluid flow inside an industrial valve in order to discover the areas with high shear stress and to determine the effect of hydrodynamic on the erosion rate.
K.H. Hanon, E. Ebrahimi
doaj   +1 more source

Plastic zone distribution and main controlling factors analysis of large mining height face in steeply dipping coal seam

open access: yesMeitan kexue jishu, 2023
Coal wall of large mining height face in steeply dipping coal seam has large free height, wide free movement space and poor self-stabilization balance, coal wall is not an isolated body in the face, it can form a load-bearing structure with the ...
Hao ZHANG, Yongping WU, Panshi XIE
doaj   +1 more source

Asymmetric Domain Walls of Small Angle in Soft Ferromagnetic Films [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 2015
45 pages, 6 ...
Döring, Lukas, Ignat, Radu
openaire   +5 more sources

The contact angle of the colloidal liquid–gas interface and a hard wall [PDF]

open access: yesJournal of Physics: Condensed Matter, 2004
submitted to J. Phys.: Cond. Matt. (CODEF proceedings)
Wessels, PPF, Schmidt, M, Löwen, H
openaire   +2 more sources

A Wall-Skew-Angle Correlatior for Flow in Curved Ducts

open access: yes, 1973
A wall-skew-angle correlation is presented which, when combined with simple calculation procedure, allows the estimation of the boundary layer integral parameters on the end wall of a curved duct, requiring one measures, data point and the inlet and ...
J.W.S. Young, J.H.G. Howard
core   +1 more source

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