A Parallel Object-Oriented DSMC Method for Blast Impact Simulations
نویسنده
چکیده
A parallel, object oriented Direct Simulation Monte Carlo (DSMC) solver is developed to study the impact of blast waves on arbitrary-shaped bodies. A very natural choice of classes is adopted to design the solver. A 3-D domain decomposition is used to parallalise the code. The Message Passing Interface (MPI) library is used to perform interprocessor communications. Preliminary results of two simulations using the parallel solver are presented. A test case to validate the solid boundary condition on the solid bodies is successfuly tested. A significant speedup is observed for three sample problems tested for parallel performance.
منابع مشابه
Numerical Simulation of the Blast Impact Problem Using the Direct Simulation Monte Carlo (dsmc) Method
A particle approach using the Direct Simulation Monte Carlo (DSMC) method is used to solve the problem of blast impact with structures. A novel approach to model the solid boundary condition for particle methods is presented. The solver is validated against an analytical solution of the Riemann shocktube problem and against experiments on interaction of a planar shock with a square cavity. Blas...
متن کاملDevelopment of a novel method in TRMC for a Binary Gas Flow Inside a Rotating Cylinder
A new approach to calculate the axially symmetric binary gas flow is proposed Dalton’s law for partial pressures contributed by each species of a binary gas mixture (argon and helium) is incorporated into numerical simulation of rarefied axially symmetric flow inside a rotating cylinder using the time relaxed Monte-Carlo (TRMC) scheme and the direct simulation Monte-Carlo (DSMC) method. The res...
متن کاملHybrid Particle-Continuum Simulations of Non-Equilibrium Hypersonic Blunt Body Flows
A modular particle-continuum (MPC) numerical method is presented which solves the Navier-Stokes (NS) equations in regions of near-equilibrium and uses the direct simulation Monte Carlo (DSMC) method where the flow is in non-equilibrium. The MPC method is designed specifically for steady-state, hypersonic, nonequilibrium flows and couples existing, state-of-the-art DSMC and NS solvers into a sin...
متن کاملParallel Object Oriented Monte Carlo Simulations
We discuss the parallelization and object-oriented implementation of Monte Carlo simulations for physical problems. We present a C++Monte Carlo class library for the automatic parallelization of Monte Carlo simulations. Besides discussing the advantages of object-oriented design in the development of this library, we show examples how C++ template techniques have allowed very generic but still ...
متن کاملObject-Oriented Method for Automatic Extraction of Road from High Resolution Satellite Images
As the information carried in a high spatial resolution image is not represented by single pixels but by meaningful image objects, which include the association of multiple pixels and their mutual relations, the object based method has become one of the most commonly used strategies for the processing of high resolution imagery. This processing comprises two fundamental and critical steps towar...
متن کامل