Determination of Discharge Coefficients for Hydraulic Sparger Design

2003 ◽  
Author(s):  
Walter Boyd Gregg ◽  
David E. Werth ◽  
Carl Frizzell
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Cooling Tower ◽  
Design Procedure ◽  
Open Channel Flow ◽  
Back Pressure ◽  
Discharge Coefficients ◽  
Free Discharge ◽  
Discharge Orifice

This paper provides design examples and summarizes a study on the determination of multiple free discharge orifice coefficients in a circular walled manifold for a variety of shapes and area projections. A simplified design procedure is presented which allows engineers to accurately maintain a given pressure and flow at the entrance to the sparger. The design provides for uniform flow across the cooling tower basin, and prevents an increase in back pressure or open channel flow within the sparger, minimizing the effect on upstream performance.

Determination of Discharge Coefficients for Hydraulic Sparger Design

2004 ◽  
Vol 126 (3) ◽  
pp. 354-359 ◽  
Author(s):  
Walter Boyd Gregg ◽  
David E. Werth ◽  
Carl Frizzell
Keyword(s):  
Open Channel ◽  
Cooling Tower ◽  
Pressure Fluctuations ◽  
Design Procedure ◽  
Open Channel Flow ◽  
Back Pressure ◽  
Discharge Coefficients ◽  
Free Discharge ◽  
Discharge Orifice

This paper provides design examples and summarizes a study on the determination of multiple free discharge orifice coefficients in a circular walled manifold for a variety of shapes and area projections. A simplified design procedure is presented which allows engineers to accurately maintain a given pressure and flow at the entrance to the sparger. The design provides for uniform flow across the cooling tower basin, and prevents an increase in back pressure or open channel flow within the sparger, minimizing the effect of surging or pressure fluctuations on upstream performance.

Finite element modeling of surge propagation and an application to the Hay River, N.W.T.

1992 ◽  
Vol 19 (3) ◽  
pp. 454-462 ◽  
Author(s):  
F. E. Hicks ◽  
P. M. Steffler ◽  
R. Gerard
Keyword(s):  
Finite Element ◽  
Channel Flow ◽  
Open Channel ◽  
Initial Conditions ◽  
Open Channel Flow ◽  
Kinematic Wave ◽  
Finite Element Scheme ◽  
Flow Problems ◽  
Ice Jam

This paper describes the application of the characteristic-dissipative-Galerkin method to steady and unsteady open channel flow problems. The robust performance of this new finite element scheme is demonstrated in modeling the propagation of ice jam release surges over a 500 km reach of the Hay River in Alberta and Northwest Territories. This demonstration includes the automatic determination of steady flow profiles through supercritical–subcritical transitions, establishing the initial conditions for the unsteady flow analyses. The ice jam releases create a dambreak type of problem which begins as a very dynamic situation then develops into an essentially kinematic wave problem as the disturbance propagated downstream. The characteristic-dissipative-Galerkin scheme provided stable solutions not only for the extremes of dynamic and kinematic wave conditions, but also through the transition between the two. Key words: open channel flow, finite element method, dam break, surge propagation.

scholarly journals Imprints In Silica Grains Induced During An Open-Channel Flow Experiment: Determination of Microtextural Signatures During Aqueous Transport

2017 ◽  
Vol 87 (7) ◽  
pp. 677-687 ◽  
Author(s):  
Pedro J.M. Costa ◽  
Yong Sung Park ◽  
Young Do Kim ◽  
Maria Quintela ◽  
William C. Mahaney ◽  
...  
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Flow Experiment
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