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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Extreme events, natural variability and climate change : Numerical and physical modelling of major hydraulic structures ina regional shopping centre in sydne...
Numerical and physical modelling of major hydraulic structures ina regional shopping centre in sydney, australia
Author : B.C. PHILLIPS (1), S. YU (1), N.S. GUERRY (2) and B.M. MILLER (2)
ABSTRACT
Warringah Mall is a regional shopping centre located within the Brookvale Creek catchment in the Sydney¡¯s northern
suburbs. Studies in 2006, 2007 and 2008 identified that under existing conditions Warringah Mall is flooded by overland
flows and overflows from Brookvale Creek. The 1D/2D modelling approach that was adopted to assess existing flooding
problems and structural options including a major drainage augmentation through Warringah Mall is outlined.
A major stormwater augmentation scheme within the Warringah Mall site was developed, assessed and approved with
conditions by Warringah Council. One of the conditions of consent required a physical model study of the two large
junction boxes to confirm the hydraulic losses which were assumed in the computer model studies and to provide advice
on how the hydraulic losses in each junction box can be minimized. This physical model study is described.
A comparison of the predicted and observed hydraulic losses and flood levels concluded that the current numerical
1D/2D model results appear to be conservative in comparison with the physical model results (which may be due to
differences in adopted conduit roughness values in the numerical model and the roughness of the conduits in the
physical model) and that the flood levels estimated by the numerical model are likely to be conservative
File Size : 2,638,151 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Extreme events, natural variability and climate change
Date Published : 20/08/2015
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