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##############################################################################
#
# Copyright (c) 2003-2018 by The University of Queensland
# http://www.uq.edu.au
#
# Primary Business: Queensland, Australia
# Licensed under the Apache License, version 2.0
# http://www.apache.org/licenses/LICENSE-2.0
#
# Development until 2012 by Earth Systems Science Computational Center (ESSCC)
# Development 2012-2013 by School of Earth Sciences
# Development from 2014 by Centre for Geoscience Computing (GeoComp)
#
##############################################################################
from __future__ import division, print_function
__copyright__="""Copyright (c) 2003-2018 by The University of Queensland
http://www.uq.edu.au
Primary Business: Queensland, Australia"""
__license__="""Licensed under the Apache License, version 2.0
http://www.apache.org/licenses/LICENSE-2.0"""
__url__="https://launchpad.net/escript-finley"
#
# small test problem fro temperture advection:
#
# T=x0*x1*exp(-t), v=[1,-1]
#
import esys.escriptcore.utestselect as unittest
from esys.escriptcore.testing import *
from esys.escript.modelframe import Link,Simulation
try:
import esys.finley
from esys.modellib.geometry import RectangularDomain,ScalarConstrainerOverBox
HAVE_FINLEY = True
except ImportError:
HAVE_FINLEY = False
from esys.modellib.input import Sequencer
from esys.modellib.probe import Probe,EvaluateExpression
from esys.modellib.temperature import TemperatureAdvection
import numpy
import os
import sys
if sys.version_info >= (3,0):
from io import StringIO
else:
#specifically to avoid non-unicode default strings
#being passed to a python3 style StringIO that expects unicode
from StringIO import StringIO
#Link() behaves badly inside a TestCase class
def run(dom, stream):
sqe=Sequencer()
sqe.t=0
sqe.t_end=0.05
constraints=ScalarConstrainerOverBox()
constraints.domain=Link(dom)
constraints.top=1
constraints.bottom=1
constraints.right=1
constraints.left=1
source=EvaluateExpression()
source.domain=Link(dom)
source.expression="(x[1]-x[0])*exp(-t)-exp(-t)*x[0]*x[1]"
source.t=Link(sqe)
boundaryvalue=EvaluateExpression()
boundaryvalue.domain=Link(dom)
boundaryvalue.expression="x[0]*x[1]*exp(-t)"
boundaryvalue.t=Link(sqe)
tt=TemperatureAdvection()
tt.domain=Link(dom)
tt.temperature=Link(boundaryvalue,"out")
tt.velocity=numpy.array([1,-1])
tt.thermal_source=Link(source,"out")
tt.location_fixed_temperature=Link(constraints,"location_of_constraint")
tt.fixed_temperature=Link(boundaryvalue,"out")
tt.safety_factor=0.1
probe=Probe()
probe.expression="x[0]*x[1]*exp(-t)"
probe.t=Link(sqe)
probe.value=Link(tt,"temperature")
s=Simulation([sqe,constraints,tt,probe],debug=True)
s.writeXML(stream)
s.run()
class Test_RunTemp(unittest.TestCase):
def setUp(self):
import sys
self.old = sys.stdout
sys.stdout = StringIO()
def tearDown(self):
import sys
sys.stdout = self.old
@unittest.skipIf(not HAVE_FINLEY, "Finley module not available")
def test_order2(self):
dom=RectangularDomain()
dom.order=2
run(dom, sys.stdout)
if __name__ == '__main__':
run_tests(__name__, exit_on_failure=True)
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