Development of a Methodology for Incorporating FESWMS-2DH Results

摘要

This study presents the analysis of a complex flow system that contains tworoadways with multiple opening-US Highway 75 and the Southeast Kansas Corridor. Typical analyses of floodplains at such sites involve the use of the one-dimensional backwater models HEC-2, HEC-RAS or WSPRO. Fairly broad assumptions are made concerning the division of flow for multiple opening bridges in applying these one-dimensional models. The analysis presented herein involves the application of the two-dimensional finite element model FESWMS-2DH (Finite Element Surface-Water Modeling System: Two-Dimensional Flow in a Horizontal Plane) to the site near Neodesha, Kansas. This model was used to determine analytically (numerically) the division of flow among the structures is compared to the one-dimensional results obtained by the USGS using the WSPRO model. The methodology used in formulating and applying the FESWMS-2DH model is also presented.