This report describes a mixed-flow hydraulic transient model for the Culver-Goodman Tunnel of Rochester, New York. The model is based on the one-dimensional unsteady partial differential equations for open channels and closed conduits. These differential equations are solved numerically using the method of characteristics. Thus, the model is capable of dealing with the rapidly changing water hammer pressures and surges in a complex system. Hydrographs at 18 dropshafts due to a 5 year storm are used as the inputs. Outflow hydrographs, storage, depth or piezometric head, and velocity at 104 stations at small time intervals are obtained as output.
|Published - Dec 1975