Two-dimensional vertical Reynolds-Averaged Navier-Stokes equations versus one-dimensional Saint-Venant model for rapidly varied open channel water flow modelling

• Autorzy: Szydłowski M. , Zima P.
• Języki publikacji: EN

Abstrakty

EN

The paper concerns mathematical modelling of free surface open channel water flow. In order to simulate the flow two models are used -- two-dimensional vertical Reynolds-Averaged Navier-Stokes equations and one-dimensional Saint-Venant equations. The former is solved with SIPMLE algorithm of finite difference method using Marker and Cell technique to trace a free surface movement. The latter is solved using the finite volume method. The dam-break (water column collapse) problem on horizontal bottom is investigated as a test case. The calculated results are compared with each other. The numerical simulations are examined against laboratory experiment presented by Koshizuka et al (1995). The possibility of using the described models to simulate rapidly varied flow is discussed.

Słowa kluczowe

EN

mathematical modelling; Reynolds-averaged Navier-Stokes equations; Saint-Venant equations; free surface flow; rapidly varied flow; dam-break problem

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2006
• Tom: Vol. 53, nr 4
• Strony: 295--309
• Opis fizyczny: Bibliogr. 24 poz., il.

Twórcy

autor

Szydłowski M.

autor

Zima P.

• Gdańsk University of Technology, Faculty for Civil and Environmental Engineering, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland,

Bibliografia

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