Print Email Facebook Twitter Applicability of CFD Modelling in Determining Accurate Weir Discharge: Water Level Relationships Title Applicability of CFD Modelling in Determining Accurate Weir Discharge: Water Level Relationships Author Rombouts, P.M.M. Tralli, A. Langeveld, J.G. Verhaart, F. Clemens, F.H.L.R. Faculty Civil Engineering and Geosciences Department Water Management Date 2014-09-07 Abstract Being able to accurately determine weir discharges is of key importance in urban water management. The most common method is performing a level measurement and calculating the discharge using the standard weir equation. Since this equation is only valid in certain conditions, this can lead to large deviations from the actual discharge. In this paper, lab measurements and CFD calculations are applied to determine a new method for the derivation of accurate Q(h) relationships. Detailed scale model experiments have been performed for the internal weir of a SST. The scale model is precisely reproduced in a CFD model, with which corresponding calculations have been performed. It is shown that the water levels from the scale model can be reproduced by the CFD model without parameter tuning. Q(h) relationships have been derived from both the scale model experiments and the CFD calculations. They have been mutually compared with the relationship from the standard equation as well. It is shown that the derived relationships are very similar indicating the applicability of CFD for this purpose. All derived relationships form a much better description of the actual weir discharge than the standard equation. Subject computational fluid dynamicsCSOQ(h)-relationshipmeasurementsscale modelweir To reference this document use: http://resolver.tudelft.nl/uuid:8f4914bf-31f8-49a1-b9f6-e6833b5e2052 Source 13th IWA/IAHR International Conference on Urban Drainage, Sarawak, Malaysia, 7-12 September 2014 Part of collection Institutional Repository Document type conference paper Rights (c) 2014 The Author(s) Files PDF 308495.pdf 624.48 KB Close viewer /islandora/object/uuid:8f4914bf-31f8-49a1-b9f6-e6833b5e2052/datastream/OBJ/view