User's Guide for a General Purpose Dam-Break Flood Simulation Model (K-634)

摘要

An existing computer program for simulating dam-break floods for forecast purposes has been modified with an emphasis on general purpose applications. The original program was formulated, developed, and documented by the National Weather Service. The model is based on the complete flow equations, that is, continuity and momentum, and uses a nonlinear implicit finite-difference method for solving the equations. The dam fails gradually after the reservoir's water level rises to a specific elevation. A complete discharge hydrograph is computed at the dam before it is routed through the stream. The results are discharge and stage hydrographs at all of the computational nodes in the channel.