Numerical computation of the transient change of flow in a pipe from partial to full depth (Q2770627)

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scientific article; zbMATH DE number 1704006
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Numerical computation of the transient change of flow in a pipe from partial to full depth
scientific article; zbMATH DE number 1704006

    Statements

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    13 February 2002
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    surface waves
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    open-channel flows
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    implicit finite volume scheme
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    method of characteristics
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    Lax-Wendroff scheme
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    full depth
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    circular pipes
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    partial depth
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    Numerical computation of the transient change of flow in a pipe from partial to full depth (English)
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    The author considers open channel flows in circular pipes for two different regimes: full and partial depth. Three numerical methods are compared -- method of characteristics, Lax-Wendroff scheme, and an implicit finite volume scheme. From an example of computation the author concludes that the method of characteristics and Lax-Wendroff scheme are comparable while the implicit scheme is faster but it suffers from unrealistic minor oscillations (however, in the case presented, they do not seem to be too disturbing). The implicit scheme is suggested for full depth computations because of its shorter running time.
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