.. _diffusion-poisson_iga: diffusion/poisson_iga.py ======================== **Description** Poisson equation solved in a single patch NURBS domain using the isogeometric analysis (IGA) approach. Find :math:`t` such that: .. math:: \int_{\Omega} c \nabla s \cdot \nabla t = \int_{\Omega_0} f s \;, \quad \forall s \;. Try setting the Dirichlet boundary condition (ebcs) on various sides of the domain (``'Gamma1'``, ..., ``'Gamma4'``). View the results using:: sfepy-view patch2d.vtk -f t:wt:f0.4 1:vw .. image:: /../doc/images/gallery/diffusion-poisson_iga.png :download:`source code ` .. literalinclude:: /../sfepy/examples/diffusion/poisson_iga.py