Hydrotechnical Construction

, Volume 8, Issue 4, pp 357–361 | Cite as

Design of inlet transtitions for submerged outlet conduits, for nonseparating and non cavitating flow

  • E. I. Dubinchik
Discussion of Construction Norm
  • 23 Downloads

Conclusions

  1. 1.

    In inlet transitions of submerged outlet conduits with nonseparating flow, local pressure reductions occur, and this can cause cavitation on and cavitational erosion of the transition surface.

     
  2. 2.

    There are countless numbers of nonseparating and noncavitating inlet transitions of elliptical profile. It is recommended that, for the preliminary selection of such profiles, use should be made of the graphs presented in Figs. 2 and 3.

     
  3. 3.

    The investigational results obtained can be used for improving and supplementing existing design standards [5] for inlet transitions of submerged outlet conduits and spillways of hydropower schemes.

     
  4. 4.

    The investigations of inlet transitions of sub merged outlet conduits should be continued with a view toward developing recommendations for the design of nonseparating and noncavitating three-dimensional transitions of circular and rectangular cross section.

     

Keywords

Cavitation Renewable Energy Source Electrical Power Generation Pressure Reduction Transition Surface 

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Literature Cited

  1. 1.
    S. M. Slisskii, Hydraulics of Hydroelectric Power Station Buildings [in Russian], Énergiya, Moscow (1970).Google Scholar
  2. 2.
    N. P. Rozanov, N. Ya. Konakhovich, and L. N. Orlova, “Investigation of inlet transitions of submerged water intakes of rectangular section,” Gidrotekh. Stroitel., No. 4 (1967).Google Scholar
  3. 3.
    B. M. Chikvashvili, Pressure Distribution on Inlet Transition Surfaces of Submerged Outlet Galleries and Their Discharge Capacity when Operating Jointly with Surface-Intake Spillway Conduits [in Russian], Gosénergoizdat, Moscow-Leningrad (1968).Google Scholar
  4. 4.
    B. M. Chikvashvili, Hydraulic Design of Pressure Outlet Conduits in High Dams [in Russian], Énergiya, Moscow (1972).Google Scholar
  5. 5.
    Engineering Criteria and Standards: Submerged Outlet and Spillway Conduits for Hydroelectric Schemes (Hydraulic Computations) [in Russian], Énergiya, Leningrad (1972).Google Scholar

Copyright information

© Plenum Publishing Corporation 1974

Authors and Affiliations

  • E. I. Dubinchik

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