Title: A Parallel Direct Cut Algorithm for High-Order Overset Methods with Application to a Spinning Golf Ball,
Abstract: Overset methods are commonly employed to enable the effective simulation of
problems involving complex geometries and moving objects such as rotorcraft.
This paper presents a novel overset domain connectivity algorithm based upon
the direct cut approach suitable for use with GPU-accelerated solvers on
high-order curved grids. In contrast to previous methods it is capable of
exploiting the highly data-parallel nature of modern accelerators. Further, the
approach is also substantially more efficient at handling the curved grids
which arise within the context of high-order methods. An implementation of this
new algorithm is presented and combined with a high-order fluid dynamics code.
The algorithm is validated against several benchmark problems, including flow
over a spinning golf ball at a Reynolds number of 150,000.