The Solution of the One-Dimensional Unsteady Flow Problem in the Lena River Delta Full article
Journal |
Bulletin of the Novosibirsk Computing Center. Series: Numerical Modeling in Atmosphere, Ocean, and Environment Studies
ISSN: 1680-6999 , E-ISSN: 2541-9161 |
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Output data | Year: 2017, Volume: 16, Pages: 37-47 Pages count : 11 | ||||
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Abstract:
The research into the hydrological regime of the river estuaries conventionally
concerns the distribution of the flow across their channels and branches.
There is a known hydraulic method for calculating the hydrological
regimes in the river deltas [1]. It is based on a system of the balance equations
for branching nodes and uses the hydraulic formulas to describe the
free surface level gradient in stationary conditions.
In [2–5] the complex river channel systems are simulated by the numerical
solution of the Saint–Venant equation system using a variety of implicit
difference schemes. The unsteady flows in the channels are described using
a one-dimensional model. At the points of branching, the conjugation conditions
are formulated. To solve the arising equations, the authors employ
a stable sweeping algorithm which accounts for the tree-like graph structure.
Altogether, these constitute the approach to solving the Saint–Venant
equation system.
It should be noted that to apply the numerical solution of the Saint–
Venant equation system to natural watercourses, one needs to prepare a
representative and consistent dataset. This would ensure the accuracy of
the solution to be.
This paper considers the mathematical model of the complexly braided
Lena estuary. The model describes the hydrological regime of the river
starting at the Kusur gauging station and ending at the outlets.
Also, this paper investigates the hydrological regime of the navigable
Bykovskaya branch. The digital terrain model required in the equations of
motion is obtained using the Google Earth Application.
Cite:
Krylova A.
, Antipova E.
, Perevozkin D.
The Solution of the One-Dimensional Unsteady Flow Problem in the Lena River Delta
Bulletin of the Novosibirsk Computing Center. Series: Numerical Modeling in Atmosphere, Ocean, and Environment Studies. 2017. V.16. P.37-47. РИНЦ
The Solution of the One-Dimensional Unsteady Flow Problem in the Lena River Delta
Bulletin of the Novosibirsk Computing Center. Series: Numerical Modeling in Atmosphere, Ocean, and Environment Studies. 2017. V.16. P.37-47. РИНЦ
Identifiers:
Elibrary | 30381213 |
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