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Physical Model Study for the Intake Channel at the Subiya Power Station, Kuwait

Author(s): Jen-Men Lo; A. Al-Salem

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Keywords: Hydraulic structure; Intake channel entrance; Sediment deposition; Cooling water; Tidal current

Abstract: To identify and correct the objectionable features of the entrance shapes suggested by the conceptual design, three proposed arrangements for the intake channel of the Subiya Power Station in Kuwait were studied using physical models. The intake channel was designed to carry a maximum water supply of 148 m3/s with a maximum velocity of 0. 16 m/s associated with the minimum design water level. This velocity value was calculated so that no resuspension of sediment already settled in the channel would occur and to avoid scouring of the channel banks. The model was designed according to the Froude similarity criterion as an undistorted model with a linear scale of 1: 80. The model was constructed to simulate an area of 2460 x 1250m. This area was found to be sufficient to run the model with a negligible boundary effect. The model test was carried out in the Hydraulics and Coastal Engineering Laboratory at the Kuwait Institute for Scientific Research. The main objective of the model test was to attain uniform velocity distribution inside the channel and to minimize separation of flow at the channel entrance. Based on the model study, it was concluded that the proposed bell-mouth intake channel should be modified by constructing 14 guide vanes at the entrance section to meet the required flow and sediment conditions.


Year: 1999

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