Error Estimate and Adaptive Refinement in Mixed Discrete Least Squares Meshless Method

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="721240.fig.0014a" src="https://static.hindawi.com/articles/mpe/volume-2014/721240/figures/721240.fig.0014a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Initial nodes = 106</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="721240.fig.0014b" src="https://static.hindawi.com/articles/mpe/volume-2014/721240/figures/721240.fig.0014b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>First step enrichment nodes = 164</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="721240.fig.0014c" src="https://static.hindawi.com/articles/mpe/volume-2014/721240/figures/721240.fig.0014c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Second step enrichment nodes = 276</td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="721240.fig.0014d" src="https://static.hindawi.com/articles/mpe/volume-2014/721240/figures/721240.fig.0014d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>Third step enrichment nodes = 491</td></tr></table></td></tr></table>

<table>Initial and refined (node enrichment) nodal configurations (Example <a href="https://static.hindawi.com/articles/mpe/volume-2014/721240/figures/#ex2">2</a>).</table>

Mathematical Problems in Engineering

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Figure 14

Figure 14: Error Estimate and Adaptive Refinement in Mixed Discrete Least Squares Meshless Method 