A Randomized Low-Rank Decomposition Based Method for Solving Volume-Surface Integral Equation
2021
A new method for solving volume-surface integral equation is proposed. The four sub-blocks of the impedance matrix are compressed in a form of hierarchical semi-separable (HSS) structure by randomized low-rank decompositions. To accelerate the convergence of the iterative solution, an HSS-based preconditioner is also proposed. Numerical experiments are conducted on an on-chip power grid model to study the performance of the method. This method can be further extended to the multilevel fast multipole algorithm for solving large-scale problems.
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