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Consideration of meteorological factors when calculating large canals

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Hydrotechnical Construction Aims and scope

Conclusions

The effect of meteorological factors on the dynamics of open-channel flows is taken into account, as a rule, when studying unsteady fluid flows [8–12]. In shallow-water equations (in particular, in the St. Venant equations), which are the most common mathematical model used for calculating open-channel unsteady flow, meteorlogical factors are included as conditions on the free surface (normal and shear stresses). The use of the indicated dynamic equations (of shallow water) makes it possible to obtain quite diverse information about the results of the effect of the atmosphere on the structure of the open-channel flow. The approach presented in this article, based on the equation of balance of mechanical energy and ultimately on the Bernoulli equation, does not permit obtaining such detailed information about the interaction of meteorological and hydraulic factors. It permits mainly obtaining simple estimates by means of which one can establish when the effect of meteorological factors on the hydraulic characteristics of flows in canals should be taken into consideration.

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Authors
  1. A. D. Girgidov
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Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 1, pp. 33–36, January, 1988.

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Girgidov, A.D. Consideration of meteorological factors when calculating large canals. Hydrotechnical Construction 22, 39–44 (1988). https://doi.org/10.1007/BF01424216

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