Results 251 to 260 of about 3,868,108 (302)

Minor losses in oscillatory flow

The Journal of the Acoustical Society of America, 2001
Energy dissipation that is manifested by gradients in pressure in a flow system is often expressed in terms of a pressure loss factor of the form K=Δ2P/ρv2. While there is a wealth of data on loss factors for a myriad of geometries in steady flow, little such data exists for pulsatile or oscillatory flow.
Barton L. Smith, Gregory W. Swift
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Channel Routing with Flow Losses

Journal of Hydraulic Engineering, 1996
A technique is developed and implemented within the NWS FLDWAV model to account for the effect of flow-volume losses in one-dimensional (1D) open-channel unsteady flow modeling. A functional form for the loss-induced lateral outflow is derived based on a specified total-volume distribution along the reach in which the loss occurs.
Ming Jin, Danny L. Fread
openaire   +1 more source

Energy Loss in Dividing Flow

1992
Hydrodynamic phenomenon, occurring at the junction where a dividing flow is present, is extremely complex and greatly varies according to modifications in discharge conditions near the junction. This is a theoretical and experimental study of free surface dividing flow phenomena in rectangular, horizontal channels with particular attention to energy ...
Peruginelli A, PAGLIARA, STEFANO
openaire   +2 more sources

Secondary Flows and Losses in Axial Flow Turbines

Journal of Engineering for Power, 1982
A simple approach to the estimation of angle variation and losses produced by the secondary flows near the hub and casing of a turbine is presented. The angle variation is predicted by ‘classical’ secondary flow theory, and the loss by estimating three components of the loss and adding them together.
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A Note on Flow Regimes and Churning Loss Modelling

Volume 8: 11th International Power Transmission and Gearing Conference; 13th International Conference on Advanced Vehicle and Tire Technologies, 2011
The purpose of this study is to investigate the various fluid flow regimes generated by a pinion running partly immersed in an oil bath and the corresponding churning power losses. In a series of papers, the authors have established several loss formulae whose validity depends on two different flow regimes characterized via a critical Reynolds number ...
Changenet, Christophe, Leprince, Gauthier, Ville, Fabrice, Velex, Philippe   +3 more
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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.
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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
openaire   +1 more source

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
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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