A WAVE BASED METHOD FOR THREE DIMENSIONAL STEADY-STATE SOUND RADIATION ANALYSIS IN A BROAD FREQUENCY RANGE

摘要

Wave based method (WBM) applies similar methodologies as for the FE schemes for tackling problems in unbounded domains. A truncation surface is introduced which divides the unbounded domain into two regions, a bounded region and an unbounded region. The bounded region is partitioned into convex subdomains. Selection of appropriate wave functions within subdomains and enforcement of continuity conditions over the truncation surface between the bounded and unbounded region, yields a WB model which can be solved for the associated wave function contribution factors. Application of the proposed approach to various validation examples illustrates an enhanced computational efficiency as compared with element-based methods.