scholarly journals AERATED FLOW CHARACTERISTICS OF STEPPED CHANNELS

2005 ◽  
Vol 49 ◽  
pp. 829-834 ◽  
Author(s):  
Masayuki TAKAHASHI ◽  
Youichi YASUDA ◽  
Iwao OHTSU
Keyword(s):  
Flow Characteristics ◽  
Aerated Flow

Aerated flow characteristics of skimming flow over stepped chutes

2013 ◽  
Vol 51 (6) ◽  
pp. 735-736
Author(s):  
Robert M. Boes ◽  
Jill Lucas ◽  
Willi H. Hager
Keyword(s):  
Flow Characteristics ◽  
Aerated Flow

Aerated flow characteristics of skimming flow over stepped chutes

2012 ◽  
Vol 50 (4) ◽  
pp. 427-434 ◽  
Author(s):  
Masayuki Takahashi ◽  
Iwao Ohtsu
Keyword(s):  
Flow Characteristics ◽  
Aerated Flow

scholarly journals AERATED FLOW CHARACTERISTICS ON STEPPED CHANNELS

2008 ◽  
Vol 52 ◽  
pp. 787-792
Author(s):  
Masayuki TAKAHASHI ◽  
Youichi YASUDA ◽  
Iwao OHTSU
Keyword(s):  
Flow Characteristics ◽  
Aerated Flow

scholarly journals Erratum for “Self-Aerated Flow Characteristics in Wall Region”

1972 ◽  
Vol 98 (8) ◽  
pp. 1456-1456
Author(s):  
Nagar S. Lakshrnana Rao ◽  
Thirnrnaiah Gangadharaiah
Keyword(s):  
Flow Characteristics ◽  
Wall Region ◽  
Aerated Flow

scholarly journals Erratum for “Self-Aerated Flow Characteristics in Wall Region”

1972 ◽  
Vol 98 (8) ◽  
pp. 1456-1456
Author(s):  
Nagar S. Lakshrnana Rao ◽  
Thirnrnaiah Gangadharaiah
Keyword(s):  
Flow Characteristics ◽  
Wall Region ◽  
Aerated Flow

Self-Aerated Flow Characteristics in Wall Region

1971 ◽  
Vol 97 (9) ◽  
pp. 1285-1303
Author(s):  
Nagar S. Lakshmana Rao ◽  
Thimmaiah Gangadharaiah
Keyword(s):  
Flow Characteristics ◽  
Wall Region ◽  
Aerated Flow

scholarly journals Performance Assessment of Shockwaves of Chute Spillways in Large Dams

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
S. M. Mousavimehr ◽  
Omid Aminoroayaie Yamini ◽  
M. R. Kavianpour
Keyword(s):  
Flow Characteristics ◽  
Hydraulic Characteristics ◽  
Effective Parameters ◽  
Aerated Flow ◽  
Large Dams ◽  
Gate Opening ◽  
Experimental Formation ◽  
Flow Domain ◽  
Available Information ◽  
The Waves

Spillways are the most important structures of large dams that are responsible for releasing the excessive flood discharge from the reservoir. Although many studies have been performed to determine the flow characteristics over these structures, however, the available information on the shockwaves’ characteristics for spillways’ design is limited. The supercritical flow below the chute piers generates an aerated flow known as shockwaves. Due to the flow interaction with the chute piers, three kinds of standing waves just downstream of the pier, in the middle of the chute, and on the sidewalls are generated. This phenomenon affects the flow domain and its hydraulic characteristics along the chute spillway. The height of the waves increases downstream, where they hit the chute walls and reflect again into the flow to interact together again. The process repeated and intensified downstream in a lozenge shape. The height of these waves can be more than twice the depth flow and thus run over the sidewalls. This is important for the design of chute walls in chute spillways with control gates. In this study, the experimental formation of the shockwaves and their behavior along the chute and their reduction measures are presented. Experiments were conducted on a scaled physical model (1/50) of Kheirabad Dam, Water Research Institute, Iran. It was realized that apart from the geometry of piers and chute spillway, Froude number of flow and gate opening are the main effective parameters on the hydraulic performance of shockwaves’ formation and their development on gated spillways.

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