Physical And Numerical Modeling Of An Orifice Spillway
As a part of the design process for hydro-electric generating stations, hydraulic engineers typically conduct some
form of model testing. The desired outcome from the testing can vary considerably depending on the specific situation, but
often characteristics such as velocity patterns, discharge rating curves, water surface profiles, and pressures at various
locations are measured. Due to recent advances in computational power and numerical techniques, it is now possible to
obtain much of this information through numerical modeling. Computational fluid dynamics (CFD) is a type of numerical
modeling that is used to solve problems involving fluid flow. Since CFD can provide a faster and more economical solution
than physical modeling, hydraulic engineers are interested in verifying the capability of CFD software. Although some
literature shows successful comparisons between CFD and physical modeling, a more comprehensive study would provide
the required confidence to use numerical modeling for design purposes. This study has examined the ability of the
commercial CFD software Fluent to model a variety of spillway configurations by making data comparisons to both new and
old physical model experimental data.
Keywords : Spillways; Pressure; Simulation; Numerical models.