A5081861283- Fluid Dynamics Simulations and Interactions
- Lattice Boltzmann Simulation Studies
- Fluid Dynamics and Heat Transfer
- Numerical methods in engineering
- Fluid Dynamics and Vibration Analysis
- Rheology and Fluid Dynamics Studies
- High-Velocity Impact and Material Behavior
- Nanopore and Nanochannel Transport Studies
- Surfactants and Colloidal Systems
- Vibration and Dynamic Analysis
Technical University of Munich
2020-2023
In this paper, we present an open-source meshless, multi-resolution and multi-physics library: SPHinXsys (pronunciation: s'finksis) which is acronym for Smoothed Particle Hydrodynamics (SPH) industrial compleX systems. It aims at modeling coupled dynamic systems including fluids, solids, multi-body dynamics beyond in a unified SPH framework. The code presently (Version: 0.2.0) includes fluid dynamics, solid thermal mass diffusion, electro-chemical reaction, fluid–structure interactions...
This paper introduces a novel dynamical pressure boundary condition for the weakly compressible smoothed particle hydrodynamics simulation of channel flows. Unlike previous methods that rely on indirect approaches or ghost particles, our method integrates directly into SPH approximation gradient near-boundary particles. Additionally, we develop meshfree bidirectional in-/outflow buffer by periodically relabeling particles at each time step. simple yet effective enables both unidirectional...
This paper develops a generalized, high-efficiency buffer for particle generation and deletion at arbitrary-positioned in-/outlets in the smoothed hydrodynamics method. To achieve generality, we standardize position comparison of particles with an in-/outlet bound by introducing coordinate transformation. enhance efficiency, candidates subjected to specific are restricted those within local cell-linked lists near defined region, thereby avoiding inefficiency straightforward approach...
We establish a theoretical framework of the particle relaxation method for uniform generation Smoothed Particle Hydrodynamics. achieve this by reformulating as an optimization problem. The objective function is integral difference between discrete particle-based and smoothed-analytical volume fractions. analysis demonstrates that in domain interior essentially equivalent to employing gradient descent approach solve problem, we can extend such equivalence bounded introducing proper boundary...
In this paper, we develop a generalized hybrid method for both two-dimensional (2-D) and three-dimensional (3-D) surfactant dynamics. While the Navier-Stokes equations are solved by Eulerian method, transport is tracked Lagrangian particle in which remeshing technique employed to prevent clustering. For mass redistribution during remeshing, weight selected with weighted least squares, shares theoretical basis of moving squares (MLS) enables present work 2-D 3-D cases. This optimized...
This paper introduces a novel dynamical pressure boundary condition for weakly-compressible smoothed particle hydrodynamics (WCSPH). Unlike previous methods that rely on indirect approaches or ghost particles, our method integrates the directly into SPH approximation of gradient near-boundary particles. Additionally, we develop meshfree bidirectional in-/outflow buffer by periodically relabelling particles at each time step, concept has not been explored before. simple yet effective...
This paper develops an arbitrary-positioned buffer for the smoothed particle hydrodynamics (SPH) method, whose generality and high efficiency are achieved through two techniques. First, with local coordinate system established at each in-/outlet, positions in global transformed into those it via transformation. Since one axis is located perpendicular to in-/outlet boundary, position comparison between particles threshold line or surface can be simplified just this dimension. Second,...
This paper proposes a diffusive wetting model for the weakly-compressible smoothed particle hydrodynamics (WCSPH) method to simulate individual water entry/exit as well complete process from entry exit. The is composed of physically consistent equation describe evolution at fluid-solid interface, wetting-coupled identification approach determine type fluid particles by taking into account degree contacted solid, and numerical regularization on fully wetted interface. accuracy, efficiency,...
This paper proposes the first free-stream boundary condition in a purely Lagrangian framework for weakly-compressible smoothed particle hydrodynamics (WCSPH). The is implemented based on several numerical techniques, including spatio-temporal method and an ensuring technique surface identification, far-field corrections of density velocity near boundary, improved in- outlet conditions which guarantee smooth inflow profile free outflow particles without issue truncated kernel. accuracy...
20세기 80년대 이후, 중국 문학계에는 문학의 독립성을 추구하며 문학을 이데올로기와 정치로부터 벗어나게 하려는 흐름이 나타났다.BR 당대의 유명 작가 옌롄커(閻連科)는 그의 작품이 이데올로기성과 정치성을 갖고 있지 않으며 작품에 대한 평론계도 그들의 논쟁이 정치와 무관하다고 생각한다. 그러나 사실상 옌롄커의 작품은 강렬한 ‘포스트사회주의’ 혹은 ‘반사회주의’적 띠고 있으며, 평론계에서 흥미를 있는 것도 바로 이 정치성이다. 어떤 정치가 정치라는 것을 인정할 때에야 특수한 정치를 보편적 진리로 상승시키지 않을 수 있고, 단일한 정치에서 벗어나 과학과 현실로 들어갈 있다.