Efficient and accurate adaptive resolution for weakly-compressible SPH
نویسندگان
چکیده
In this paper we propose an accurate, and computationally efficient method for incorporating adaptive spatial resolution into weakly-compressible Smoothed Particle Hydrodynamics (SPH) schemes. Particles are adaptively split merged in accurate manner. Critically, the ensures that number of neighbors each particle is optimal, leading to algorithm. A set background particles used specify either geometry-based resolution, where a function distance solid body, or solution-based computed solution. This allows us simulate problems using having length variations order 1:250 with much fewer than currently reported other techniques. The designed automatically adapt when any bodies move. algorithms employed fully parallel. We consider suite benchmark demonstrate accuracy approach. then classic problem flow past circular cylinder at range Reynolds numbers show proposed produces results significantly reduced particles. provide open source implementation reproducible manuscript.
منابع مشابه
Weakly-compressible SPH and Experimental modeling of periodic wave breaking on a plane slope
Breaking waves have ability to transport large quantities of sediment and significant impact on coastal structures morphology. Hence, modeling of wave breaking is an important subject in coastal and marine engineering. In this research, the periodic wave breaking process on a plane slope is studied experimentally and numerically. Laboratory experiments were conducted to record water surface ele...
متن کاملA comparative study of truly incompressible and weakly compressible SPH methods for free surface incompressible flows
In this paper, the performance of the incompressible SPH (ISPH) method and an improved weakly compressible SPH (IWCSPH) method for free surface incompressible flows are compared and analyzed. In both methods, the Navier–Stokes equations are solved, and no artificial viscosity is used. The ISPH algorithm in this paper is based on the classical SPH projection method with common treatments on soli...
متن کاملweakly-compressible sph and experimental modeling of periodic wave breaking on a plane slope
breaking waves have ability to transport large quantities of sediment and significant impact on coastal structures morphology. hence, modeling of wave breaking is an important subject in coastal and marine engineering. in this research, the periodic wave breaking process on a plane slope is studied experimentally and numerically. laboratory experiments were conducted to record water surface ele...
متن کاملTemporal Blending for Adaptive SPH
In this paper we introduce a fast and consistent Smoothed Particle Hydrodynamics (SPH) technique which is suitable for convection-diffusion simulations of incompressible fluids. We apply our temporal blending technique to reduce the number of particles in the simulation while smoothly changing quantity fields. Our approach greatly reduces the error introduced in the pressure term when changing ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Computer Methods in Applied Mechanics and Engineering
سال: 2022
ISSN: ['0045-7825', '1879-2138']
DOI: https://doi.org/10.1016/j.cma.2022.115019