Comparison of physical and numerical dam-break simulations

1998-01-01
Laboratory data obtained from model studies of an existing dam under three different failure scenarios are presented. Moreover, the numerical failure simulations of the same dam were performed by employing two state-of-the-art numerical models, namely, SMPDBK and DAMBRK, both developed at the National Weather Service (NWS) in the United States. Comparison of the measured and computed results indicate that both numerical models predict peak flood elevation with somewhat reasonable accuracy. However, the results of the more comprehensive dambreak model, (DAMBRK) were closer to the measurements than those of the SMPDBK model, as expected. The SMPDBK model, when compared to the DAMBRK model, underestimates the peak water elevations more because of its simpler algorithm. Moreover, there exist large differences for the peak water surface occurrence times between the physical model and the numerical model predictions, especially in SMPDBK. This is attributed to the high sensitivity of the numerical models to the bottom friction of the channel. Laboratory data obtained from model studies of an existing dam under three different failure scenarios are presented. Moreover, the numerical failure simulations of the same dam were performed by employing two state-of-the-art numerical models, namely, SMPDBK and DAMBRK, both developed at the National Weather Service (NWS) in the United States. Comparison of the measured and computed results indicate that both numerical models predict peak flood elevation with somewhat reasonable accuracy. However, the results of the more comprehensive dambreak model, (DAMBRK) were closer to the measurements than those of the SMPDBK model, as expected. The SMPDBK model, when compared to the DAMBRK model, underestimates the peak water elevations more because of its simpler algorithm. Moreover, there exist large differences for the peak water surface occurrence times between the physical model and the numerical model predictions, especially in SMPDBK. This is attributed to the high sensitivity of the numerical models to the bottom friction of the channel.
Turkish Journal of Engineering and Environmental Sciences

Suggestions

Comparison of Fenitrothion and Trifluralin Adsorption on Organo-Zeolites and Activated Carbon. Part II: Thermodynamic Parameters and the Suitability of the Kinetic Models of Pesticide Adsorption
LÜLE ŞENÖZ, Güzide Meltem; Atalay, Mustafa Ümit (Informa UK Limited, 2014-07-04)
The suitability of two kinetic models and the thermodynamic parameters of pesticide adsorption were investigated based on obtained data of previous studies. Kinetic evaluation indicated that the pesticides adsorption on adsorbents followed the pseudo-second-order model. Gibbs free energy (Delta G degrees), enthalpy (Delta H degrees), and entropy (Delta S degrees) were calculated for thermodynamic parameters by using linearized Arrhenius equation. The results indicated that the sorption process of fenitrothi...
Overconfidence and bubbles in experimental asset markets
Şahin, Serkan; Küçükkaya, Halit Engin; Yılmaz, Özlem; Department of Business Administration (2013)
The aim of this study is to investigate uncertainty levels of industries and explore those financial ratios that have the highest information content in determining the set of industry characteristics and use the most informative ratios selected in developing industry specific financial distress models. First, we employ factor analysis to determine the set of ratios that are most informative in specified industries. Second, we use entropy method as a Multiple Attribute Decision Making Model, to measure the ...
Computation of transient thermal stresses in elastic-plastic tubes: Effect of coupling and temperature-dependent physical properties
Eraslan, Ahmet Nedim (2002-06-01)
The objective of this study is to obtain the transient solution of the thermoelastic-plastic deformation of internal heat-generating tubes by considering the thermomechanical coupling effect and the temperature-dependent physical properties of the material. The previously developed steady-state model describing the elastic-plastic behavior of the tubes is modified to obtain the transient solution. The propagation of the elastic-plastic interface for a given heat load is obtained; and the corresponding stres...
1-D and 2-D flood modeling studies and upstream structural measures for Samsun city Terme district
Bozoğlu, Başar; Akyürek, Sevda Zuhal; Department of Civil Engineering (2015)
In this study, Samsun City Terme District flood problem is examined with 1-D and 2-D flood modeling approach. In July 2012 Terme City Centre was exposed to a flood event. Approximately 510 m³/s flood discharge passed through the city. The river water level reachedtop of the levees and some parts were overflowed. The area is exposed to flooding as ifthe other urban areas located in Black Sea Region. The possible causes and effects of the flood problem on the Terme District are examined and some upstream stru...
Modern tools for the time-discrete dynamics and optimization of gene-environment networks
DEFTERLİ, ÖZLEM; Fuegenschuh, Armin; Weber, Gerhard Wilhelm (Elsevier BV, 2011-12-01)
In this study, we discuss the models of genetic regulatory systems, so-called gene-environment networks. The dynamics of such kind of systems are described by a class of time-continuous ordinary differential equations having a general form (E) over dot = M(E)E, where E is a vector of gene-expression levels and environmental factors and M(E) is the matrix having functional entries containing unknown parameters to be optimized. Accordingly, time-discrete versions of that model class are studied and improved b...
Citation Formats
Z. Bozkuş, “Comparison of physical and numerical dam-break simulations,” Turkish Journal of Engineering and Environmental Sciences, pp. 429–443, 1998, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0032467054&origin=inward.