l#aaa3fe30e53372abc97acfe2e97f3ed0b">SaveAsVTK</a>(root_dir + <span class="stringliteral">&quot;particle_000.vtk&quot;</span>);</div>
<div class="line"> </div>
<div class="line">  <span class="keywordtype">double</span> fz = 0;</div>
<div class="line">  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> ti = 0; ti &lt; 100; ti++) {</div>
<div class="line">    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> tj = 0; tj &lt; 50; tj++) {</div>
<div class="line"