The Split-Field PML Absorbing Boundary Condition for the Unconditionally Stable Node-Based LOD-RPIM Method

To numerically model open-domain structures and radiation problems, an absorbing boundary condition (ABC) has to be applied to emulate infinite open space. In this letter, the split-field perfectly matched layer (PML) ABC is developed and presented for the unconditionally stable node-based locally one-dimensional radial point interpolation meshless method. Numerical experiments are conducted to demonstrate the performance of the proposed PML ABC; they show that the proposed PML method has a good absorbing capability.