Results 261 to 270 of about 3,838,736 (307)

Orifice Losses for Laminar Approach Flow

Journal of the Hydraulics Division, 1972
In all, 25 orifices are studied which include sharp-edged concentric, eccentric and segmental orifices, quadrant-edged concentric orifices and square-edged long orifices. The β ratio (ratio of orifice diameter to pipe diameter) is varied from 0.2 to 0.8 except for the long orifice for which studies are conducted for β = 0.2.
Nagar S. Lakshmana Rao, Kalambur Sridharan   +1 more
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Losses in Flow

2010
Flow losses take place either as friction loss due to wall friction and viscosity or as local flow loss depending on conduit or channel geometry. Both types of losses are described in detail for conduit flow.
openaire   +1 more source

Friction Losses in Turbulent Pipe-flow

Proceedings of the Institution of Mechanical Engineers, 1951
Significant developments in the theory of turbulent flow in smooth and rough pipes are reviewed to establish a rational basis for the commonly accepted logarithmic laws for pipe friction. The Prandtl (1932)‡ smooth-pipe law, , where f is the friction coefficient in the formula , agrees with measured results on smooth pipes up to Reynolds numbers of at
L. E. Prosser, R. C. Worster, S. T. Bonnington   +2 more
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Junction Losses for Arbitrary Flow Directions

Journal of Fluids Engineering, 2017
Two hydraulic losses take effect at the junction point of three cylindrical conduits. These two quantities are considered to be functions of the three signed flow rates and two geometrical parameters: the cross-sectional area ratio and the angle between the main conduit and branch tube.
András Tomor, Gergely Kristóf
openaire   +1 more source

Generalized Compressible Flow with Losses

1966
A common problem in engineering concerns the determination of pressure drop in a system involving losses. Confusion begins with the question, “Which pressure drop is significant, total or static?” We will show that the total-pressure drop is the only one of significance in determining losses in a general flow involving a compressible fluid in a ...
Robert P. Benedict, Nicola A. Carlucci
openaire   +1 more source

Energy losses in flow through stenosed valves

Journal of Biomechanics, 1979
Abstract A theoretical analysis yields equations for the calculation of rates of mechanical energy loss in unsteady flow, both within a stenosed valve and in the turbulent mixing region which occurs downstream of the valve. Losses within each of the two regions can be determined by subtraction of the mechanical energy terms at inlet and outlet, but ...
openaire   +2 more sources

Flowing Gels for Loss Circulation Prevention

SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, 2017
Abstract Loss circulation is a common problem in drilling operations. It is a problem in which not only the valuable drilling fluid is lost, but also time and money accompany those losses. In order to mitigate this problem various loss circulation materials (LCMs) are being used all over the world.
M. D. Hashmat, Abdullah S. Sultan, Saifur Rahman, S. M. Hussain, Shaikh Asrof Ali   +4 more
openaire   +1 more source

Excess pressure losses in capillary flows

The Canadian Journal of Chemical Engineering, 1993
AbstractAccurate determinations of excess pressure losses at the entry and exit of capillary flows are essential for rheological characterization of fluids by capillary viscometry. A modification of Bagley's end correction method is presented which accounts for the effects of slight variations in the diameters of the tubes of varying length used in the
W. Kozicki, P. Q. Kuang
openaire   +1 more source

Controlling nitrogen flows and losses

2004
This book is a synthesis of contributions drawn from the 12th Nitrogen Workshop held at the University of Exeter, UK. It provides a valuable compilation of current research, aimed at reconciling the environmental and economic components of Nitrogen cycling within the context of a productive agricultural industry.
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Unraveling Performance Losses in Flow Batteries

ECS Meeting Abstracts, 2011
Abstract not Available.
Thomas A. Zawodzinski, Tang Zhijiang, Doug Aaron, Jamie S. Lawton, Robert M. Counce, Mark Moore, Jack Watson, Matthew Mench, Alexander Papandrew   +8 more
openaire   +1 more source