@Article{cmc.2020.09227,
AUTHOR = {Abdelraheem M. Aly, Mitsuteru Asai, Ehab Mahmoud Mohamed},
TITLE = {Simulation of Water-Soil-Structure Interactions Using  Incompressible Smoothed Particle Hydrodynamics},
JOURNAL = {Computers, Materials \& Continua},
VOLUME = {65},
YEAR = {2020},
NUMBER = {1},
PAGES = {205--224},
URL = {http://www.techscience.com/cmc/v65n1/39562},
ISSN = {1546-2226},
ABSTRACT = {In the present work, an incompressible smoothed particle hydrodynamic (SPH)
method is introduced to simulate water-soil-structure interactions. In the current calculation, 
the water is modelled as a Newtonian fluid. The soil is modelled in two different cases. In the 
first case, the granular material is considered as a fluid where a Bingham type constitutive 
model is proposed based on Mohr-Coulomb yield-stress criterion, and the viscosity is derived 
from the cohesion and friction angle. In addition, the fictitious suspension layers between 
water and soil depending on the concentration of soil are introduced. In the second case, 
Hooke’s law introduces elastic soil. In ISPH, the pressure is evaluated by solving the pressure 
Poisson equation using a semi-implicit algorithm based on the projection method and an eddy 
viscosity for water is modelled by a large eddy simulation with the Smagorinsky model. In 
the proposed ISPH method, the pressure is stabilized to simulate the multiphase flow between 
soil and water. Numerical experiments for water-soil suspension flow of Louvain erosional 
dam break with flat soil foundation, is simulated and validated using 3D-ISPH method. 
Coupling between water-soil interactions with different solid structures are simulated. The 
results revealed that, the suspension layers with the Bingham model of soil gives more 
accurate results in the experiment as compared to the case of the Bingham model without 
suspension layers. In addition, the elastic soil model by the Hooke’s law can simulate soil 
hump accurately as compared to the Bingham model. From the simulations, avoiding erosion 
behind the structure for preventing the structure break during flood are investigated by using 
an extended structure or a wedge structure.},
DOI = {10.32604/cmc.2020.09227}
}