Skip to main content
SpringerLink
Log in

Kinematic structure of flow in a trapezoidal channel

  • Published:
Hydrotechnical Construction Aims and scope

    We’re sorry, something doesn't seem to be working properly.

    Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.

Conclusions

  1. 1.

    Under conditions of designing earth canals for a maximum permissible noneroding velocity a trapezoidal channel shape is potentially unstable.

  2. 2.

    In trapezoidal channels the distribution of the velocity over the width does not correspond to the calculation by the Chezy formula with the use of local (on verticals) hydraulic radii.

  3. 3.

    To provide slope stability of trapezoidal canals it is necessary when estimating the design velocity to take into account the actual distribution of the velocity over the channel width, which practically leads to a decrease of the design velocity.

  4. 4.

    From the viewpoint of cost effectiveness of designing large canals in a deformable earth channel it is necessary to reject trapezoidal shapes. It is necessary to adopt a parabolic configuration corresponding in shape to the diagram of the velocity distribution over the channel width; in this case the design flow velocity can be taken with respect to a depth close to the maximum.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Literature cited

  1. G. V. Zheleznyakov, Capacity of Canal and River Channels [in Russian], Gidrometeoizdat, Leningrad (1981).

    Google Scholar 

  2. E. M. Minskii, Turbulence of a Channel Flow [in Russian], Gidrometeoizdat, Leningrad (1952).

    Google Scholar 

  3. D. I. Grinval'd, Turbulence of Channel Flows [in Russian], Gidrometeoizdat, Leningrad (1974).

    Google Scholar 

  4. I. A. Sherenkov, Applied Two-Dimensional Problems of Hydraulics of Tranquil Flows [in Russian], Énergiya, Moscow (1978).

    Google Scholar 

  5. N. A. Mikhailova, O. B. Shevchenko, and M. M. Selyametov, “Laboratory investigations of the formation of stable canal channels,” Gidrotekh. Stroit., No. 7 (1980).

  6. V. S. Altunin and M. M. Selyametov, “Increase of the stability of earth canals by means of partial revetment of the slopes,” Gidrotekh. Stroit., No. 3 (1981).

Download references

Authors
  1. E. K. Rabkova
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. V. I. Elfimov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Havier Pas Martines
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 3, pp. 24–27, March, 1984.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rabkova, E.K., Elfimov, V.I. & Martines, H.P. Kinematic structure of flow in a trapezoidal channel. Hydrotechnical Construction 18, 124–128 (1984). https://doi.org/10.1007/BF01428702

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01428702

Keywords

Search

Navigation