TY  - JOUR
TI  - AN ACCELERATED NODAL DISCONTINUOUS GALERKIN METHOD FOR THERMAL CONVECTION ON UNSTRUCTURED MESHES: FORMULATION AND VALIDATION
AB  - We present a GPU-accelerated method for large scale, coupled incompressible fluid flow and heat transfer problems. A high-order, nodal discontinuous Galerkin method is utilized to discretize governing equations on unstructured triangular meshes. A semi-implicit scheme with explicit treatment of the advective terms and implicit treatment of the split Stokes operators are used for time discretization. The pressure system is solved with a conjugate gradient method together with a fully GPU-accelerated multigrid preconditioner. The code is built on scalable libParanumal solver which is a library of high-performance kernels for high-order discretizations. Performance portability is achieved by using the open concurrent compute abstraction, OCCA.A set of numerical experiments including free and mixed convection problems indicate that our approach experimentally reaches design order of accuracy.
AU  - Karakus, Ali
DO  - 10.47480/isibted.1107459
PY  - 2022
JO  - Isı Bilimi ve Tekniği Dergisi
VL  - 42
IS  - 1
SN  - 1300-3615
SP  - 91
EP  - 100
DB  - TRDizin
UR  - http://search/yayin/detay/1086494
ER  -