Results 261 to 270 of about 36,990 (311)

Two-dimensional choked transonic flow

ZAMP Zeitschrift f�r angewandte Mathematik und Physik, 1988
Choked transonic flow about a thin two-dimensional airfoil in a wide wind tunnel is analyzed. Asymptotic expansions are constructed in terms of the transonic similarity variable \(K_ T\) as \(K_ T\to 0\) (and the tunnel height\(\to \infty)\), in an inner region, ``near'' the body, and in an outer region, near the walls, and are matched.
Cole, J. D., Cook, L. Pamela
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Choked Flows through Short Contractions

Journal of Hydraulic Engineering, 2001
This paper presents a study on choked flows through short, lateral contractions in subcritical open channels. A new discharge equation is developed based on the conservation of energy and experimental data with a wide range of opening ratios (ratio of contracted width-to-total width). The theoretical derivation accounts for the critical flow conditions
Baosheng Wu, Albert Molinas
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Generalizing the CHOKe flow protection

Computer Networks, 2013
This paper proposes a simple and stateless active queue management (AQM) scheme, called geometric CHOKe (gCHOKe), to protect responsive flows from unresponsive ones. gCHOKe has its root in and is a generalization of the original CHOKe. It provides an additional power of protection, achieved by introducing an extra flow matching trial following each ...
Eshete A., Jiang Y.
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CHOKED FLOW CALCULATIONS OF TWO-PHASE BUBBLY FLOW

Numerical Heat Transfer, Part A: Applications, 2002
A new choked flow criterion based on the system eigenvalues derived by the characteristic analysis of a hyperbolic nonequilibrium two-fluid model is employed in the RELAP5/MOD3 code. A modification of the choked flow model produced by the earlier works of Trapp and Ransom is elaborated so that better predictions of choked flow rate can be made in the ...
Moon-Sun Chung, Won-Jae Lee, Kwi-Seok Ha
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Modeling of multiphase flow through chokes

Flow Measurement and Instrumentation, 2018
Abstract The accurate measurement of mass flow rate is of vital importance with respect to production control in gas or oil fields equipped with chokes. A theoretical model to predict the flow regime and mass flow rate of multiphase flow through chokes was developed and derived on the basis of Perkins and Al-safran models.
Huaishuang Shao, Lei Jiang, Lei Liu, Qinxin Zhao   +3 more
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Choking conditions inside plunging flow dropshafts

Canadian Journal of Civil Engineering, 2014
Severe rain events can subject our existing drainage systems to capacity. While the conveyance capacity of sewers can be increased by temporarily tolerating a full pipe flow condition, the complex dynamics of water–air mixture occurring in vertical dropshafts can largely restrict the overall conveyance capacity of drainage systems.
G. Adriana Camino, Nallamuthu Rajaratnam, David Z. Zhu   +2 more
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Heat flow choking in carbon nanotubes

International Journal of Heat and Mass Transfer, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Hai-Dong, Cao, Bing-Yang, Guo, Zeng-Yuan   +2 more
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Flashing Choked Flows

2016
The existing methods for critical discharge of flashing liquid and the results of experimental measurements are surveyed. The principal problems on the consistency of experimental data are formulated and the set of the most reliable experiments is presented.
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Solid-Liquid Flow Through a Wellhead Choke Valve

Volume 4: Fluid-Structure Interaction, 2013
Wellhead choke valves are often subjected to the flow of solid-liquid mixtures due to sand production in oil extraction processes. Generally, the mixture is very dilute, and the main concern of engineers is the extensive wear arising from the continuous impacts between the particles and the internal parts of the valve.
MALAVASI, STEFANO, MESSA, GIANANDREA VITTORIO, FERRARESE, GIACOMO   +2 more
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Choke-free flow in trapezoidal channels

Proceedings of the Institution of Civil Engineers - Water Management, 2010
is very suitable to design a channel transition from the point of view of a no-choke condition. In this study, the condition of choke-free flow for two types of transitions in trapezoidal channels subject to a rise in bed elevation is considered. Based on the critical flow occurring downstream of the transition zone, the energy equation is solved with
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