The smoothed particle hydrodynamics (SPH) method was employed to simulate the heat transfer process in porous media at pore scale. effective thermal conductivity of a medium can be predicted through simulation experiment SPH. accuracy SPH verified by comparing values with reference for ideal homogeneous and multiphase layered media. 3D experiments were implemented granular generated PFC method....

By comparing a collisionless cosmological N-body simulation (DM) to a smoothed particle hydrodynamics simulation (SPH) with the same initial conditions, we investigate the correspondence between the dark matter subhalos produced by collisionless dynamics and the galaxies produced by dissipative gas dynamics in a dark matter background. When galaxies in the SPH simulation fall into larger groups...

The improved Smoothed Particle Hydrodynamics (SPH) method with numerical diffusive terms, which is referred to as δ-SPH, has been widely applied into the studies of engineering problems, especially in fields ocean and coastal engineering. Nonetheless, there are still some drawbacks associated δ-SPH model case other particle methods. These correspond presence unphysical pressure noise well impre...

The life of a tsunami is usually divided into three phases: the generation (tsunami source), the propagation and the inundation. Each phase is complex and often described separately. A brief description of each phase is given. Model problems are identified. Their formulation is given. While some of these problems can be solved analytically, most require numerical techniques. The inundation phas...

By modeling mass transfer phenomena, we simulate solids and liquids dissolving or changing to other substances. We also deal with the very small-scale phenomena that occur when a fluid spreads out at the interface of another fluid. We model the pressure at the interfaces between fluids with Darcy’s Law and represent the viscous fingering phenomenon in which a fluid interface spreads out with a ...

We investigate the condition for the bounce of circular disks which obliquely impacts on fluid surface. An experiment [ Clanet, C., Hersen, F. and Bocquet, L., Nature 427, 29 (2004) ] revealed that there exists a “magic angle” of 20◦ between a disk’s face and water surface in which condition the required speed for bounce is minimized. We perform three-dimensional simulation of the diskwater imp...

Lagrangian particle-based methods have opened new perspectives for the investigation of complex problems with large free-surface deformation. Some well-known adopted to solve non-linear hydrodynamics are smoothed particle (SPH) and moving semi-implicit (MPS). Both modeled continuum by a system particles (points) but adopting distinct approaches numerical operators, pressure calculation, boundar...

Investigation of the waves generated by underwater disturbances gives precious insight into the effect of man-made underwater explosions as well as natural phenomena, such as underwater volcanoes or oceanic meteor impact. On the other hand, prediction of the effects of such waves on the coastal installations and structures is required for preparation worthwhile criteria for coastal engineers to...

Abstract Engineered cementitious composites (ECC), also known as bendable concrete, were developed based on engineering the interactions between fibers and matrix. The orientation of fibers, in this regard, is one major factors influencing ductile behavior material. In study, fiber distributions ECC beams influenced by different casting techniques are evaluated via numerical modeling process. T...