Publication detail

Evaluation of viscous models for simulation of flow over round-shaped weirs

ŠPANO, M. STARA, V.

Original Title

Evaluation of viscous models for simulation of flow over round-shaped weirs

Type

conference paper

Language

English

Original Abstract

In connection with the process of dam safety enhancement, emergency spillways of dams are being widely upgraded in Czech Republic. The aim is to enhance their capacity to satisfy the requirement for safety management of 10 000-year flood passage. Round-shaped weirs are often used for this purpose. They are easy to build, which is their main advantage. Round-shaped weirs were used for example in the reconstruction and capacity enhancement of the emergency spillway on the Bystřička dam or the Šance dam. The most important parameters of each spillway are its capacity and discharge coefficient. Hydraulic models are usually used to assess the capacity and discharge coefficient of given weir shape. However, numerical simulations are taking place here too. A 2D numerical simulation of flow over round-shaped weir was performed in combination with nine viscous models. The aim of work is to find which viscous model is most suitable for simulating of flow over round-shaped weirs. All computations were made on the same grid and with the same initial and boundary conditions. Simulations were performed using commercial software ANSYS-Fluent which uses finite volume method. Results from simulation were compared with results from hydraulic research.

Keywords

Round shape weirs, viscous models, CFD

Authors

ŠPANO, M.; STARA, V.

RIV year

2009

Released

30. 10. 2009

Publisher

Taylor and Francis group

Location

Valencie

ISBN

978-0-415-56697-1

Book

Environmental hydraulics, theoretical, experimental and computational solutions

Edition number

1

Pages from

103

Pages to

106

Pages count

4

BibTex

@inproceedings{BUT32071,
  author="Miroslav {Špano} and Vlastimil {Stara}",
  title="Evaluation of viscous models for simulation of flow over round-shaped weirs",
  booktitle="Environmental hydraulics, theoretical, experimental and computational solutions",
  year="2009",
  number="1",
  pages="103--106",
  publisher="Taylor and Francis group",
  address="Valencie",
  isbn="978-0-415-56697-1"
}