Author(s): Chin-Lien Yen

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Abstract: Subsidence of peak flow in channels with storage areas having no significant longitudinal flow is investigated. Numerical simulation of unsteady flow is used for various sizes of storage area and flow conditions. Based on the results of numerical simulation, a subsidence function is defined and expressed as an exponential function of a parameter combining relative size of storage area, peak inflow, and other flow and channel factors. The coefficients in the subsidence function are also evaluated from the results of numerical simulation. Testing of the subsidence function with one set of field data yields reasonably good results. However, further testing with more field data is recommended.

DOI: https://doi.org/10.1080/00221687809499610

Year: 1978