Simulation of Berenger's perfectly matched layer with a modified TLM node

A modified TLM symmetrical condensed node is proposed which allows direct implementation of Berenger's (see J. Comput. Phys., vol.114 ,no.2, p.185-200, 1994) PML in a variable mesh 3D-TLM method. A new scattering matrix is given and several tests are proposed to show the validity and efficiency of this modified node.