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<section id="amrclaw-for-1d-problems">
<span id="amrclaw-1d"></span><h1>AMRClaw for 1d problems<a class="headerlink" href="#amrclaw-for-1d-problems" title="Permalink to this heading">¶</a></h1>
<p><strong>New in Version 5.4.1</strong></p>
<p>AMRClaw has been extended to support one-dimensional AMR directly.</p>
<p>The <cite>setrun.py</cite> file has the same form as for 2d AMRClaw, with the obvious
changes to eliminate the y-direction. See <a class="reference internal" href="setrun_amrclaw_sample.html#setrun-amrclaw-sample"><span class="std std-ref">Sample setrun.py module for AMRClaw</span></a>.</p>
<p>For some examples, see the <cite>1d</cite> examples in <cite>$CLAW/amrclaw/examples/</cite> and in
<span class="xref std std-ref">gallery_classic_amrclaw</span>.</p>
<section id="old-approach-deprecated">
<h2>Old approach, deprecated:<a class="headerlink" href="#old-approach-deprecated" title="Permalink to this heading">¶</a></h2>
<p>The two-dimensional code can also be used for 1-dimensional problems, by
setting <cite>num_cells[1] = 1</cite> so there is only one cell in the <cite>y</cite> direction.
Also set <cite>refinement_ratios_y = [1,1,1, …]</cite> so that refinement is not done
in this direction.</p>
<p>In this case the code will automatically do sweeps only in the x-direction
and not attempt to solve any Riemann problems in the y-direction, or
transverse Riemann problems.</p>
<p>The output in the <em>fort.q000N</em> files will be suitable for plotting with the
one-dimensional Python plotting tools, e.g. these files will list the number
of cells in <em>x</em> but not in <em>y</em>.</p>
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