Article | Proceedings of the 56th Conference on Simulation and Modelling (SIMS 56), October, 7-9, 2015, Linköping University, Sweden | Simulation of Transcritical Flow in Hydraulic Structures
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Title:
Simulation of Transcritical Flow in Hydraulic Structures
Author:
Cornelius Agu: Faculty of Technology, Telemark University College, Norway Bernt Lie: Statoil AS, Norway Geir Elseth: Faculty of Technology, Telemark University College, Norway
DOI:
10.3384/ecp15119369
Download:
Full text (pdf)
Year:
2015
Conference:
Proceedings of the 56th Conference on Simulation and Modelling (SIMS 56), October, 7-9, 2015, Linköping University, Sweden
Issue:
119
Article no.:
037
Pages:
369-375
No. of pages:
7
Publication type:
Abstract and Fulltext
Published:
2015-11-25
ISBN:
978-91-7685-900-1
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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In hydraulic engineering, transcritical flows are often required in some applications. One example is in a Venturi channel where the occurrence of critical depth is used to estimate flow rate in the channel. In this paper, a simple numerical scheme that predicts transcritical flows in hydraulic structures is developed based on the Saint Venant Equations (SVE). The solution of this scheme is aimed to be used in real time to calibrate the model that uses a measured liquid level to estimate flow rate of the fluid in a Venturi channel. The proposed algorithm consists of a set of ordinary differential equations derived from discretizing SVE in space along the channel axis. The results based on this scheme show that the algorithm is capable of predicting flows involving transcritical conditions. Errors associated with the scheme are relatively small in locating shocks in flows with imposed downstream boundary level, and in predicting the transition within the throat of Venturi channels.

Keywords: Transcritical; Saint Venant Equations; Critical Depth; Hydraulic Structures; Boundary Condition

Proceedings of the 56th Conference on Simulation and Modelling (SIMS 56), October, 7-9, 2015, Linköping University, Sweden

Author:
Cornelius Agu, Bernt Lie, Geir Elseth
Title:
Simulation of Transcritical Flow in Hydraulic Structures
DOI:
http://dx.doi.org/10.3384/ecp15119369
References:

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Proceedings of the 56th Conference on Simulation and Modelling (SIMS 56), October, 7-9, 2015, Linköping University, Sweden

Author:
Cornelius Agu, Bernt Lie, Geir Elseth
Title:
Simulation of Transcritical Flow in Hydraulic Structures
DOI:
http://dx.doi.org/10.3384/ecp15119369
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