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Upply unit of a fishpass for low-head hydro developments

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Hydrotechnical Construction Aims and scope

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Thus, the investigations established that the vertical gate with a dentate lower edge can be used as the supply uni sh locks; in this case its characteristics are not inferior to sluice gates installed on operating fishways.

It was found that: discharge with free access of air under the nappe beyond the gate with the dentate lower edge is observed if the r (ltth+a)/hlp<1.45. In the case of discharge without free access of air a roller is formed, the length of which depends the ratio given above; the discharge coefficient μ increases with increase ofa/hlp; an expression was obtained which can be used to determine the length of the stretch of increased nonuniformity of elocity distribution over the cross section of the flow in the fish-holding flume; a dependence of the change in turbulence intensity beyond the gate with the dentate lower edge was obtained; turbulence intensity behind the gate with the dentate lower edge is lower than behind the vertical gate.

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References

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Authors
  1. M. A. Skorobogatov
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Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 4, pp. 33–35, April, 1997.

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Skorobogatov, M.A. Upply unit of a fishpass for low-head hydro developments. Hydrotechnical Construction 31, 33–35 (1997). https://doi.org/10.1007/BF02960648

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