Criteria for Selecting Hydraulic Models

mahyarov · 10-25-2012, 04:09 PM

This report documents and presents the results of a research effort to develop a decision tool for selecting either a one- or two-dimensional hydraulic model when examining flow through bridge crossings. The research began with a literature search and survey of the state of the practice to identify and characterize the site conditions and design requirements that may affect model selection. From this list of factors that influence model selection, a series of “desktop” experiments were constructed that compared one- and two-dimensional model results over a wide range of possible configurations. This research also examined several design criteria to discern their sensitivity to possible inaccuracy in numerical modeling results. From these results, a decision tool in the form of a decision matrix was developed as well as guidelines for its application. This tool provides a formal procedure for selecting the most appropriate model for a particular application incorporating site conditions, design elements, available resources and project constraints.

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