Non-reflective boundary techniques in UM-LISA

Hui Zhang

Non-reflective boundary techniques are typically used in simulation to reduce boundary reflections and reduce model size. The non-reflective boundary conditions and boundary layer methods are developed and implemented in UM-LISA to faciliate simulation so that users can focus on the area of interest while avoiding boundary interferences.

The current implementation of NRB techniques implemented in UM-LISA are illustrated below

here.

The following picture shows the performance of different NRB techniques.

here.

For more information about the algorithm and features, please check the following references.

References

  1. Zhang, H. and Cesnik, C. E. S., “A hybrid non-reflective boundary technique for efficient simulation of guided waves using local interaction simulation approach,” Proc. SPIE, 98050U (2016).