Pool-orifice and pool-orifice-weir fishways

1989 ◽  
Vol 16 (5) ◽  
pp. 774-777 ◽  
Author(s):  
N. Rajaratnam ◽  
C. Katopodis ◽  
A. Mainali
Keyword(s):  
Open Channel ◽  
Open Channel Flow ◽  
Technical Note ◽  
Total Flow ◽  
Total Flow Rate ◽  
Vertical Slot ◽  
Flow Hydraulics ◽  
Orifice Flow ◽  
Flow Through ◽  
Submerged Orifice

This technical note presents a method of analyzing the flow in pool-orifice fishways by dividing it into vertical slot and submerged orifice flow regimes. For a pool-orifice-weir fishway, with flow through the orifice as well as over the weir, a method has been suggested for predicting the total flow rate in the fishway. Experimental observations are presented in support of these methods. Key words: open-channel flow, hydraulics, fishways, turbulent flow.

Predictions of bulk velocity for open channel flow through submerged vegetation

2020 ◽  
Vol 32 (4) ◽  
pp. 795-799
Author(s):  
Wei-jie Wang ◽  
Xiao-yu Cui ◽  
Fei Dong ◽  
Wen-qi Peng ◽  
Zhen Han ◽  
...  
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Bulk Velocity ◽  
Submerged Vegetation ◽  
Flow Through

New designs for vertical slot fishways

1992 ◽  
Vol 19 (3) ◽  
pp. 402-414 ◽  
Author(s):  
N. Rajaratnam ◽  
C. Katopodis ◽  
S. Solanki
Keyword(s):  
Experimental Study ◽  
Turbulent Flow ◽  
Key Words ◽  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Slot Width ◽  
Satisfactory Performance ◽  
Vertical Slot ◽  
Hydraulic Design

This paper presents the results of an experimental study on 18 designs of vertical slot fishways. Based on these results, it appears that a width of 8b0 and a length of 10b0 for the pools, where b0 is the slot width, are satisfactory, and minor variations can be made to these dimensions without affecting their satisfactory performance. In the two general groups of designs, design 6 in the first group and designs 16 and 18 in the second group are recommended for practical use. Key words: fishways, hydraulics, turbulent flow, open-channel flow, hydraulic design.

Modelling of Open Channel Flow through Vegetation

2005 ◽  
pp. 395-428 ◽  
Author(s):  
C.A.M.E. Wilson ◽  
T. Stoesser ◽  
P.D. Bates
Keyword(s):  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Flow Through

Field studies of fishways in Alberta

1992 ◽  
Vol 19 (4) ◽  
pp. 627-638 ◽  
Author(s):  
N. Rajaratnam ◽  
C. Katopodis ◽  
R. Paccagnan
Keyword(s):  
Key Words ◽  
Channel Flow ◽  
Open Channel ◽  
Open Channel Flow ◽  
Field Studies ◽  
Hydraulic Characteristics ◽  
General Picture ◽  
Vertical Slot ◽  
Scale Models ◽  
Made In

This paper presents a detailed account of field studies performed on one pool-weir and several Denil and vertical slot fishways in the province of Alberta. The pictures show the broad features of the flow. The velocity profiles obtained in the field studies have confirmed the measurements made in the laboratory on scale models and have enhanced the general picture, particularly for the vertical slot fishways. This paper provides hydraulic engineers with information for understanding the primary hydraulic characteristics of fishways. Key words: fishways, field studies, hydraulics, open-channel flow, turbulent flow.

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