Parallel wave sound analysis based on hierarchical domain decomposition method

Domain decomposition on parallel computers

We consider the application of domain decomposition techniques to the solution of sparse linear systems arising from implicit PDE discretizations on parallel computers. Representatives of two popular MIMD architectures, message passing (the Intel iPSC/Z-SX) and shared memory (the Encore Multimax 320), are employed. We run the same numerical experiments on each, namely stripwise and boxwise deco...

An adaptive hierarchical domain decomposition method for parallel contact dynamics simulations of granular materials

A fully parallel version of the Contact dynamics (CD) method is presented in this paper. For large enough systems, 100% efficiency is reached for an arbitrary number of processors using hierarchical domain decomposition with dynamical load balancing. The iterative scheme to calculate the contact forces is left domain-wise sequential, with data exchange after each iteration step, which ensures i...

Domain Decomposition Based High Performance Parallel Computing

The study deals with the parallelization of finite element based Navier-Stokes codes using domain decomposition and state-ofart sparse direct solvers. There has been significant improvement in the performance of sparse direct solvers. Parallel sparse direct solvers are not found to exhibit good scalability. Hence, the parallelization of sparse direct solvers is done using domain decomposition t...

Sound Source Localization Using Non-Conformal Surface Sound Field Transformation Based on Spherical Harmonic Wave Decomposition

Spherical microphone arrays have been paid increasing attention for their ability to locate a sound source with arbitrary incident angle in three-dimensional space. Low-frequency sound sources are usually located by using spherical near-field acoustic holography. The reconstruction surface and holography surface are conformal surfaces in the conventional sound field transformation based on gene...

Parallel Tetrahedral Mesh Generation Based on A-priori Domain Decomposition