Coupling with the Embedded Boundary Method in a Runge-Kutta Discontinuous-Galerkin Direct Ghost-Fluid Method (RKDG-DGFM) Framework for Fluid-Structure Interaction Simulations of Underwater Explosions
نویسندگان
چکیده
Solution of near-field underwater explosion (UNDEX) problems frequently require the modeling two-way coupled fluid-structure interaction (FSI). This paper describes addition an embedded boundary method to UNDEX framework for multiphase, compressible and inviscid fluid using combined algorithms Runge–Kutta, discontinuous-Galerkin, level-set direct ghost-fluid methods. A computational dynamics (CFD) solver based on these has been developed as described in previous work. coupling approach was required perform FSI simulation interfacing with external structural mechanics solver. Large deformation possible rupture cracking characterize phenomenon UNDEX, so (EBM) is more appealing this application comparison dynamic mesh methods such arbitrary Lagrangian-Eulerian (ALE) enable algorithm fluid. Its limitation requiring a closed interface that fully submerged domain relaxed by adjustment its applicability extended. Two implementing wall condition are also compared. The first solves local 1D Riemann problem at each intersecting point between wetted elements mesh. In method, iterations when Tait equation state utilized. second does not solution implemented results
منابع مشابه
A High Order Discontinuous Galerkin Method for Fluid-Structure Interaction
We describe a method for computing time-dependent solutions to the compressible Navier-Stokes equations coupled to a hyperelastic Neo-Hookean membrane model. The deforming domain is handled by introducing a continuous mapping between a fixed reference configuration and the time varying domain, and rewriting the Navier-Stokes equations as a conservation law for the independent variables in the r...
متن کاملRunge - Kutta Discontinuous Galerkin Method for the Boltzmann Equation
In this thesis we investigate the ability of the Runge-Kutta Discontinuous Galerkin (RKDG) method to provide accurate and efficient solutions of the Boltzmann equation. Solutions of the Boltzmann equation are desirable in connection to small scale science and technology because when characteristic flow length scales become of the order of, or smaller than, the molecular mean free path, the Navi...
متن کاملA Runge-Kutta discontinuous Galerkin method for viscous flow equations
This paper presents a Runge–Kutta discontinuous Galerkin (RKDG) method for viscous flow computation. The construction of the RKDG method is based on a gas-kinetic formulation, which not only couples the convective and dissipative terms together, but also includes both discontinuous and continuous representation in the flux evaluation at a cell interface through a simple hybrid gas distribution ...
متن کاملThe Runge–Kutta Discontinuous Galerkin Method for Conservation Laws V
This is the fifth paper in a series in which we construct and study the so-called Runge–Kutta discontinuous Galerkin method for numerically solving hyperbolic conservation laws. In this paper, we extend the method to multidimensional nonlinear systems of conservation laws. The algorithms are described and discussed, including algorithm formulation and practical implementation issues such as the...
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: Journal of Marine Science and Engineering
سال: 2021
ISSN: ['2077-1312']
DOI: https://doi.org/10.3390/jmse9121375