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  75.   <div class="section" id="advection-with-inflow-boundary-conditions">
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  76. <span id="fvmbook-chap7-advinflow"></span><h1>Advection with inflow boundary conditions.<a class="headerlink" href="#advection-with-inflow-boundary-conditions" title="Permalink to this headline">ΒΆ</a></h1>
    77. 

  77. <p>Inflow boundary condition <span class="math notranslate nohighlight">\(u(0,t) = g(t)\)</span> at <span class="math notranslate nohighlight">\(x=0\)</span>
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  78. are specified by the user in the routines <cite>g.f</cite> and
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  79. <cite>bc1.f</cite> by setting the ghost cells at the left edge to:</p>
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  80. <p><span class="math notranslate nohighlight">\(Q_0^n = g(t + \Delta x/2u)\)</span></p>
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  81. <p><span class="math notranslate nohighlight">\(Q_{-1}^n = g(t + 3\Delta x/2u)\)</span></p>
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  82. <p>Example [book/chap7/advinflow] to accompany the book
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  83. <a class="reference external" href="http://www.clawpack.org/book.html">Finite Volume Methods for Hyperbolic Problems</a>
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