نتایج جستجو برای: weakly compressible smoothed particle hydrodynamics
تعداد نتایج: 249902 فیلتر نتایج به سال:
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...
The smoothed particle hydrodynamics method has been deeply studied and validated for the past decades on a weakly-compressible fluid discretization for the Euler equations. Recently several authors have proposed the use of SPH truly-incompressible algorithms in the most varied domains of computational fluid dynamics. Within this technique, based on the projection method, a pressure Poisson equa...
In this paper, the coupled weakly compressible (WC) and total Lagrangian (TL) smoothed particle hydrodynamics (SPH) model based on open-source multi-physics multi-resolution SPHinXsys library is used to simulate structural deformation failure problem in fluid-structure interaction (FSI). Aiming at that original TLSPH method could not cracks their propagation, fracture established, then verified...
Due to the convenience and flexibility in modeling complex geometries deformable objects, local ghost particles methods are becoming more popular. In present study, a novel semi-fixed method is proposed for weakly compressible smoothed particle hydrodynamics (WCSPH). comparison with previous methods, new boundary can effectively reduce spurious pressure oscillations smooth flow field. Besides, ...
This paper describes an energy-preserving and globally time-reversible code for weakly compressible smoothed particle hydrodynamics (SPH). We do not add any additional dynamics to the Monaghan's original SPH scheme at level of ordinary differential equation, but we show how discretize equations by using a corrected expression density invoking symplectic integrator. Moreover, achieve global-in-t...
The choice of a time integration scheme is crucial aspect any transient fluid simulation, and Smoothed-Particle Hydrodynamics (SPH) no exception. influence the on energy balance here addressed. To do so, explicit expressions allowing to compute deviations from balance, induced by scheme, are provided. These expressions, computed \textit{a posteriori}, valid for different methods. Such formulati...
Recent developments of meshfree and particle methods and their applications in applied mechanics are surveyed. Three major methodologies have been reviewed. First, smoothed particle hydrodynamics ~SPH! is discussed as a representative of a non-local kernel, strong form collocation approach. Second, mesh-free Galerkin methods, which have been an active research area in recent years, are reviewed...
We present a particle method for the simulation of three dimensional compressible hydrodynamics based on a hybrid Particle-Mesh discretization of the governing equations. The method is rooted on the regularization of particle locations as in remeshed Smoothed Particle Hydrodynamics (rSPH). The rSPH method was recently introduced to remedy problems associated with the distortion of computational...
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