TJES: Karim RA, Mohammad JR, .SPH Open Boundary Simulation of Free-Surface Flow Over Ogee-crested Spillway. Tikrit Journal of Engineering Sciences 2021; 28(2): 137- 151.
References
[1] Engineers, U.A.C.o., Corps of Engineers hydraulic design criteria. 1952, Waterways Experiment Station Vicksburg, Miss. [2] Johnson, M.C. and B.M.J.J.o.h.e. Savage, Physical and numerical comparison of flow 0 5 10 15 20 25 30 Water Surface Level (cm) -50 -40 -30 -20 -10 0 10 20 30 40 Distance from vetical face (cm) Experiment SPH CFD 0 5 10 15 20 25 30 Water Surface Level (cm) -50 -40 -30 -20 -10 0 10 20 30 40 Distance from vetical face (cm) Experiment SPH CFD Rizgar Ahmed Karim, Jowhar Rasheed Mohammad / Tikrit Journal of Engineering Sciences (2021) 28(2): 137-151. 151 over ogee spillway in the presence of tailwater. 2006. 132(12): p. 1353-1357. [3] Kanyabujinja, N.P., CFD modeling of ogee spillway hydraulics and comparison with physical model tests. 2015, Stellenbosch: Stellenbosch University. [4] Liu, G.-R., Meshfree methods: moving beyond the finite element method. 2009: Taylor & Francis.
Tikrit Journal of Engineering Sciences (2021) 28(2) 137- 151.
SPH Open Boundary Simulation of Free-Surface Flow Over Ogee-crested Spillway
Rizgar A.. Karim *1 Jowhar R.. Mohammad 2
DOI: http://doi.org/10.25130/tjes.28.2.11
Abstract
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.
Download Full-Text PDF
Keywords: 2D-SPHysics, Hydrodynamics, Ogeecrested Spillway, Open boundary condition, SPH modeling, Water Surface profile.
Related Articles