Next Article in Journal
Response of Vallisneria natans to Increasing Nitrogen Loading Depends on Sediment Nutrient Characteristics
Next Article in Special Issue
Twenty-Five Years of Hydroinformatics
Previous Article in Journal
Applicability of a Nu-Support Vector Regression Model for the Completion of Missing Data in Hydrological Time Series
Previous Article in Special Issue
Development of a New Generation of Flood Inundation Maps—A Case Study of the Coastal City of Tainan, Taiwan
Article Menu

Export Article

Open AccessArticle
Water 2016, 8(12), 562; doi:10.3390/w8120562

Effects of Reducing Convective Acceleration Terms in Modelling Supercritical and Transcritical Flow Conditions

1
UNESCO-IHE, Westvest 7, 2611 AX Delft, The Netherlands
2
Center for Water Systems, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
3
Faculty of Civil Engineering, University of Belgrade, Bulevar kralja Aleksandra 73, 11000 Belgrade, Serbia
4
School of Engineering and Technology, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathum Thani 12120, Thailand
*
Author to whom correspondence should be addressed.
Academic Editor: Y. Jun Xu
Received: 29 September 2016 / Revised: 21 November 2016 / Accepted: 24 November 2016 / Published: 30 November 2016
(This article belongs to the Special Issue Hydroinformatics and Urban Water Systems)
View Full-Text   |   Download PDF [4842 KB, uploaded 30 November 2016]   |  

Abstract

Modelling floods and flood-related disasters has become priority for many researchers and practitioners. Currently, there are several options that can be used for modelling floods in urban areas and the present work attempts to investigate effectiveness of different model formulations in modelling supercritical and transcritical flow conditions. In our work, we use the following three methods for modelling one-dimensional (1D) flows: the MIKE 11 flow model, Kutija’s method, and the Roe scheme. We use two methods for modelling two-dimensional (2D) flows: the MIKE21 flow model and a non-inertia 2D model. Apart from the MIKE11 and MIKE21 models, the code for all other models was developed and used for the purposes of the present work. The performance of the models was evaluated using hypothetical case studies with the intention of representing some configurations that can be found in urban floodplains. The present work does not go into the assessment of these models in modelling various topographical features that may be found on urban floodplains, but rather focuses on how they perform in simulating supercritical and transcritical flows. The overall findings are that the simplified models which ignore convective acceleration terms (CATs) in the momentum equations may be effectively used to model urban flood plains without a significant loss of accuracy. View Full-Text
Keywords: convective acceleration term; shallow water equations; numerical schemes; 1D models; 2D models; supercritical flows; transcritical flows convective acceleration term; shallow water equations; numerical schemes; 1D models; 2D models; supercritical flows; transcritical flows
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Abebe, Y.A.; Seyoum, S.D.; Vojinovic, Z.; Price, R.K. Effects of Reducing Convective Acceleration Terms in Modelling Supercritical and Transcritical Flow Conditions. Water 2016, 8, 562.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top