Adding viscous shock tube

applications/index.html

@@ -18,6 +18,15 @@ <h4><a href="taylor_green_vortex.html">Taylor-Green vortex<a/></h4>
                     <p>A three-dimensional simulation that solves the compressible Navier-Stokes equations. This demonstrates vortex stretching and turbulence in a triply-periodic domain.</p>
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+            <article>
+                <a href="viscous_shock_tube.html" class="image"><img src="{{ site.baseurl }}/images/Viscous_shock_tube_CPC2021.jpg" alt="" /></a>
+                <div class="inner">
+                    <h4><a href="viscous_shock_tube.html">Viscous shock tube vortex<a/></h4>
+                    <p>A two-dimensional test case of unsteady shock waves and boundary layers (Lusher et al, 2021).</p>
+                </div>
+            </article>  
+
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                 <a href="shocks.html" class="image"><img src="{{ site.baseurl }}/images/Transitional_SBLI_from_CPC2021.jpg" alt="" /></a>
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