A Domain Decomposition Method for Hybrid Shell Vector Element with Boundary Integral Method

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left">Method</td><td align="center">DDM-FE-BI</td><td align="center">DDM-SVE-BI</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">Unknowns of single PEC coating cube</td><td align="center">5344</td><td align="center">3218</td></tr><tr><td align="left">The total unknowns</td><td align="center">10688</td><td align="center">6436</td></tr><tr><td align="left">Memory of matrix K about single PEC coating cube</td><td align="center">228.5 Mb</td><td align="center">82.8 Mb</td></tr><tr><td align="left">Computational time for matrix <svg height="14.8" id="M122" style="vertical-align:-3.30182pt" version="1.1" viewbox="0 0 19.924999 14.8" width="19.924999" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.8)">
<g transform="translate(72,-60.16)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝐗</tspan>
</text>
<text transform="matrix(1,0,0,-1,-62.92,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝐂</tspan>
</text>
</g>
</g>
</svg></td><td align="center">29846.8 s</td><td align="center">7702.7 s</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

The comparison of the DDM-FEM-BI and DDM-SVE-BI. Bistatic RCS of two coating PEC cubes. (mesh density with <svg height="14.75" id="M121" style="vertical-align:-3.25793pt" version="1.1" viewbox="0 0 34.650002 14.75" width="34.650002" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.75)">
<g transform="translate(72,-60.2)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝜆</tspan>
</text>
<text transform="matrix(1,0,0,-1,-65.19,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">0</tspan>
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<text transform="matrix(1,0,0,-1,-60.31,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">/</tspan>
<tspan style="font-size: 12.50px; " x="3.4758339" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="9.727334" y="0">0</tspan>
</text>
</g>
</g>
</svg>).

International Journal of Antennas and Propagation

tab2

Table 2

Table 2: A Domain Decomposition Method for Hybrid Shell Vector Element with Boundary Integral Method 