In this study, we investigate the performance of smoothed particle hydrodynamics (SPH) method regarding computation confined flows in microchannels. Modeling and numerical simulation with SPH involve representation flowing matter as distinct mass points, leading to discretization Navier–Stokes equations. The computational methodology exhibits similarities other well-established methods, such mo...

PySPH is an open-source, Python-based, framework for particle methods in general and Smoothed Particle Hydrodynamics (SPH) particular. allows a user to define complete SPH simulation using pure Python. High-performance code generated from this high-level Python executed on either multiple cores, or GPUs, seamlessly. It also supports distributed execution MPI. wide variety of schemes formulation...

s: In this paper, we propose an improvement in boundary condition computation of Smoothed Particle Hydrodynamics. Generally, to calculate a wall boundary in particle methods, a wall is converted into particle representation and used as static particles. However, it has several issues, e.g., a boundary is discretized into particles and thus does not result in accurate representation of the bound...

Conservation of potential vorticity (PV) and Kelvin’s circulation theorem express two of the fundamental concepts in ideal fluid dynamics. In this note, we discuss these two concepts in the context of the Smoothed Particle Hydrodynamics (SPH) method. We show that, if interpreted in an appropriate way, one can make a statement about conservation of circulation and PV in a particle fluid model su...

We discuss some 3D numerical simulations of accretion discs using the SPH method and a polytropic equation of state. We show that discs exist even for as large value of the polytropic index as 1.2, and that these discs are always in hydrostatic balance. We also show that even without any inflow, spiral shocks appear in the discs.

We show that discreteness effects related to classical two-body relaxation produce spurious heating of the gaseous component in numerical simulations of galaxy formation. A simple analytic calculation demonstrates that this artificial heating will dominate radiative cooling in any simulation where the mass of an individual dark matter particle exceeds a certain critical value. This maximum mass...