The present paper reviews several approaches that can be used in capturing urban features in coarse resolution two-dimensional (2D) models and it demonstrates the effectiveness of a new approach against the straightforward 2D modelling approach on a hypothetical and a real-life case study work. The case study work addresses the use of coarse grid resolutions in 2D non-inertia models. The 2D non-inertia model used solves continuity and momentum equations over the cells of the coarse model while taking the minimum elevation as a surface level. The volume stored in every cell is calculated as a volume-depth relationship. In order to replicate restriction in conveyances in x–y directions of fine resolution models due to building blocks, the friction values of the coarse-resolution model are adjusted to match the results of the high-resolution model. The work presented in this paper shows the possibility of applying a 2D non-inertia model more effectively in urban flood modelling applications whilst still making use of the high resolution of topographic data that can nowadays be easily acquired.
Article navigation
Research Article|
June 05 2012
Modelling floods in urban areas and representation of buildings with a method based on adjusted conveyance and storage characteristics
Zoran Vojinovic
;
1
Department for Hydroinformatics and Knowledge Management, UNESCO-IHE, Westvest 7, 2601 DA Delft, The Netherlands
E-mail: Z.Vojinovic@unesco-ihe.org
Search for other works by this author on:
Solomon Seyoum
;
Solomon Seyoum
1
Department for Hydroinformatics and Knowledge Management, UNESCO-IHE, Westvest 7, 2601 DA Delft, The Netherlands
Search for other works by this author on:
Mwanaisha H. Salum
;
Mwanaisha H. Salum
1
Department for Hydroinformatics and Knowledge Management, UNESCO-IHE, Westvest 7, 2601 DA Delft, The Netherlands
Search for other works by this author on:
Roland K. Price
;
Roland K. Price
1
Department for Hydroinformatics and Knowledge Management, UNESCO-IHE, Westvest 7, 2601 DA Delft, The Netherlands
Search for other works by this author on:
Ahmad K. Fikri
;
Ahmad K. Fikri
1
Department for Hydroinformatics and Knowledge Management, UNESCO-IHE, Westvest 7, 2601 DA Delft, The Netherlands
Search for other works by this author on:
Yared Abebe
Yared Abebe
1
Department for Hydroinformatics and Knowledge Management, UNESCO-IHE, Westvest 7, 2601 DA Delft, The Netherlands
Search for other works by this author on:
Journal of Hydroinformatics (2013) 15 (4): 1150-1168.
Article history
Received:
November 24 2011
Accepted:
March 29 2012
Citation
Zoran Vojinovic, Solomon Seyoum, Mwanaisha H. Salum, Roland K. Price, Ahmad K. Fikri, Yared Abebe; Modelling floods in urban areas and representation of buildings with a method based on adjusted conveyance and storage characteristics. Journal of Hydroinformatics 1 October 2013; 15 (4): 1150–1168. doi: https://doi.org/10.2166/hydro.2012.181
Download citation file:
Close
Citation
Zoran Vojinovic, Solomon Seyoum, Mwanaisha H. Salum, Roland K. Price, Ahmad K. Fikri, Yared Abebe; Modelling floods in urban areas and representation of buildings with a method based on adjusted conveyance and storage characteristics. Journal of Hydroinformatics 1 October 2013; 15 (4): 1150–1168. doi: https://doi.org/10.2166/hydro.2012.181
Download citation file:
Close