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  • Committer: Bazaar Package Importer
  • Author(s): Johannes Ring
  • Date: 2009-10-12 14:13:18 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20091012141318-hkbxl0sq555vqv7d
Tags: 0.9.4-1
* New upstream release. This version cleans up the design of the
  function class by adding a new abstraction for user-defined
  functions called Expression. A number of minor bugfixes and
  improvements have also been made.
* debian/watch: Update for new flat directory structure.
* Update debian/copyright.
* debian/rules: Use explicit paths to PETSc 3.0.0 and SLEPc 3.0.0.

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demo/pde/poisson1D/python/demo.py
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"""
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__author__ = "Kristian B. Oelgaard (k.b.oelgaard@tudelft.nl)"
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__date__ = "2007-11-28 -- 2008-12-19"
 
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__date__ = "2007-11-28 -- 2009-10-07"
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__copyright__ = "Copyright (C) 2007 Kristian B. Oelgaard"
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__license__  = "GNU LGPL Version 2.1"
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# Define variational problem
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v = TestFunction(V)
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u = TrialFunction(V)
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f = Function(V, "9.0*pi*pi*sin(3.0*pi*x[0])")
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g = Function(V, "3.0*pi*cos(3.0*pi*x[0])")
 
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f = Expression("9.0*pi*pi*sin(3.0*pi*x[0])", V = V)
 
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g = Expression("3.0*pi*cos(3.0*pi*x[0])", V = V)
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a = dot(grad(v), grad(u))*dx
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L = v*f*dx + v*g*ds