论文标题
多次加入与两相不可压缩的Navier-Stokes流有关
Multipreconditioning with application to two-phase incompressible Navier-Stokes flow
论文作者
论文摘要
当有多个先进器可用，但最佳选择尚不清楚时，我们考虑使用多重构来求解线性系统。特别是，我们考虑了一种选择性的多重构GMRE算法，其中我们将加权纳入了一个，使我们更喜欢一个预处理而不是另一个预处理。我们的目标应用在于模拟不可压缩的两相流。由于并不总是知道预处理是否会在模拟中发现的所有制度中表现良好，因此我们还考虑了多次结构对性能差的预处理器的稳健性。总体而言，我们通过该方法获得了有希望的结果。
We consider the use of multipreconditioning to solve linear systems when more than one preconditioner is available but the optimal choice is not known. In particular, we consider a selective multipreconditioned GMRES algorithm where we incorporate a weighting that allows us to prefer one preconditioner over another. Our target application lies in the simulation of incompressible two-phase flow. Since it is not always known if a preconditioner will perform well within all regimes found in a simulation, we also consider robustness of the multipreconditioning to a poorly performing preconditioner. Overall, we obtain promising results with the approach.
