High-order velocity and pressure wall boundary conditions in Eulerian incompressible SPH

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Pressure boundary conditions for computing incompressible flows with SPH

Abstract In Smoothed Particle Hydrodynamics (SPH) methods for fluid flow, incompressibility may be imposed by a projection method with an artificial homogeneous Neumann boundary condition for the pressure Poisson equation. This is often inconsistent with physical conditions at solid walls and inflow and outflow boundaries. For this reason open-boundary flows have rarely been computed using SPH....

متن کامل

Higher Order Wall Boundary Conditions for Incompressible Flow Simulations

In this paper, the new higher order wall boundary conditions are proposed for solving the incompressible flows. The square driven cavity flows are simulated by using the variable order method of lines with the present wall boundary conditions. The variable order method of lines is constructed by the spatial discretization, i.e., the variable order proper convective scheme for convective terms a...

متن کامل

Unified semi-analytical wall boundary conditions applied to 2-D incompressible SPH

This work aims at improving the 2-D incompressible SPH model (ISPH) by adapting it to the unified semi-analytical wall boundary conditions proposed by Ferrand et al. [10]. The ISPH algorithm considered is as proposed by Lind et al. [25], based on the projection method with a divergence-free velocity field and using a stabilising procedure based on particle shifting. However, we consider an exte...

متن کامل

Application of the unified semi-analytical wall boundary conditions to 2-D incompressible SPH

This work aims at improving an incompressible SPH model (ISPH) by adapting to it the unified semi-analytical wall boundary conditions proposed by Ferrand et al. [1]. The ISPH algorithm considered is the one proposed by Lind et al. [2]. The new description of the wall boundaries allows to impose accurately a von Neumann boundary condition on the pressure that corresponds to the impermeability co...

متن کامل

Boundary Conditions for a Divergence Free Velocity-Pressure Formulation of the Incompressible Navier-Stokes Equations

New sets of boundary conditions for the velocity-pressure formulation of the incompressible Navier-Stokes equations are derived. The boundary conditions have the same form on both inflow and outflow boundaries and lead to a divergence free solution. Moreover, the specific form of the boundary conditions makes it possible derive a symmetric positive definite equation system for the internal pres...

متن کامل

ذخیره 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: Journal of Computational Physics

سال: 2021

ISSN: 0021-9991

DOI: 10.1016/j.jcp.2020.109793