A Numerical Method for Solving Elliptic Interface Problems Using Petrov-Galerkin Formulation with Adaptive Refinement

<div>Numerical results of Example <a href="https://static.hindawi.com/articles/mpe/volume-2018/3721258/figures/#ex1">2</a>.</div>

Mathematical Problems in Engineering

Figure 4: A Numerical Method for Solving Elliptic Interface Problems Using Petrov-Galerkin Formulation with Adaptive Refinement 