Investigation of the Importance of Spatial Resolution for Two-Dimensional Shallow-Water Model Accuracy (CROSBI ID 156536)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Družeta, Siniša ; Sopta, Luka ; Maćešić, Senka ; Črnjarić-Žic, Nelida
engleski
Investigation of the Importance of Spatial Resolution for Two-Dimensional Shallow-Water Model Accuracy
The importance of spatial resolution for two-dimensional shallow-water model accuracy has been investigated by testing the effect of mesh refinement on two test cases based on laboratory dam-break experiments. A balanced first-order accurate upwind Q-Scheme and a second-order accurate upwind Hancock Monotone Upstream-centered Scheme for Conservation Laws scheme were both first validated on an analytical test, and then applied to the experimental dam-break test cases on four meshes of different density. Simulation results were evaluated through comparison of experimental and computed water level values at several available gauge points. Model sensitivity analysis showed that (1) mesh density was not critical for results accuracy ; (2) excessive mesh refinement somewhat deteriorated the results ; and (3) optimal spatial resolution was relatively low. Response is shown to be highly complex and no simple relation between spatial resolution and model accuracy has been found.
Shallow water; Two-dimensional flow; Two-dimensional models; Mesh generation; Sensitivity analysis; Spatial analysis
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Podaci o izdanju
135 (11)
2009.
917-925
objavljeno
0733-9429
10.1061/(ASCE)0733-9429(2009)135:11(917)
Povezanost rada
Građevinarstvo, Temeljne tehničke znanosti