This study was conducted to compare water surface profiles with standard ogeecrested spillways. Different methods were used, such as (experimental models,
numerical models, and design nomographs for the United States Army Corps of
Engineers, USACE). In accordance with the USACE specifications, three different
models were constructed from rigid foam and then installed in a testing flume. The
water surface profile has been recorded for these models with different design
heads. For modeling the experimental model configurations, a numerical model
based on the smoothed particle hydrodynamics (SPH) technique was used and is
developed to simulate the water surface profile of the flow over the ogee-crested
spillway. A 2D SPHysics open-source software has been used in this study, using
the SPH formulation to model fluid flow, developing the SPH boundary procedure
to handle open-boundary simulations, and modifying the open-source SPHysics
code for this purpose. The maximum absolute difference between the measured
and computed results of the water surface profile for all head ratios of (H/Hd), does
not exceed 4.63% at the crest region, the numerical results for the water surface
profile showed good agreement with the physical model results. The results
obtained experimentally and numerically by SPH are compared with the CFD
results in order to be more reassuring from the results. Additional comparisons
were made using interpolated data from USACE, Waterways Experiment Station
(WES), and design nomographs. The SPH technique is considered very promising
and effective for free surface flow applications.
SPH Open Boundary Simulation of Free-Surface Flow Over Ogee-crested Spillway
