/[escript]/trunk/doc/examples/cookbook/onedheatdiffbase.py
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Contents of /trunk/doc/examples/cookbook/onedheatdiffbase.py

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Revision 2667 - (show annotations)
Thu Sep 17 01:49:11 2009 UTC (10 years, 2 months ago) by jfenwick
Original Path: trunk/doc/examples/cookbook/onedheatdiff.py
File MIME type: text/x-python
File size: 2608 byte(s)
Renamed the main cookbook tex file to match our convention.
Replaced doc/cookbook/figures/heatrefraction002contqu.pdf with
a version which is actually pdf. However it needs to be regnerated since
it it sideways.

The examples have had their copyright notices fixed (dates were too early).
sb2.py has been removed since it uses pyvisi.

scons will now build the cookbook as parts of a docs build.
Also in reposnse to :
scons cookbook_pdf


1
2 ########################################################
3 #
4 # Copyright (c) 2009 by University of Queensland
5 # Earth Systems Science Computational Center (ESSCC)
6 # http://www.uq.edu.au/esscc
7 #
8 # Primary Business: Queensland, Australia
9 # Licensed under the Open Software License version 3.0
10 # http://www.opensource.org/licenses/osl-3.0.php
11 #
12 ########################################################
13
14 __copyright__="""Copyright (c) 2009 by University of Queensland
15 Earth Systems Science Computational Center (ESSCC)
16 http://www.uq.edu.au/esscc
17 Primary Business: Queensland, Australia"""
18 __license__="""Licensed under the Open Software License version 3.0
19 http://www.opensource.org/licenses/osl-3.0.php"""
20 __url__="https://launchpad.net/escript-finley"
21
22 """
23 Author: Antony Hallam antony.hallam@uqconnect.edu.au
24 """
25
26 # To solve the problem it is necessary to import the modules we require.
27 from esys.escript import * # This imports everything from the escript library
28 from esys.escript.linearPDEs import LinearPDE # This defines LinearPDE as LinearPDE
29 from esys.finley import Rectangle # This imports the rectangle domain function from finley
30 import os #This package is necessary to handle saving our data.
31 from cblib import needdirs
32
33
34 ##ESTABLISHING VARIABLES
35 #PDE related
36 q=50.e6 #our heat source temperature
37 Tref=0. #the starting temperature of our iron bar
38 rho=2.6e6
39 eta=0#75.
40 kappa=240.
41 #Script/Iteration Related
42 t=0 #our start time, usually zero
43 tend=5.#the time we want to end the simulation
44 h=0.05 #size of time step
45
46 print "Expected Number of Output Files is: ", (tend-t)/h
47
48 i=0 #loop counter
49 save_path = "data/onedheatdiff" #the folder to put our outputs in, leave blank "" for script path - note this folder path must exist to work
50 needdirs([save_path])
51
52 #... generate domain ...
53 rod = Rectangle(l0=0.05,l1=.01,n0=500, n1=1)
54 # extract finite points
55 x=rod.getX()
56 #... open PDE ...
57 mypde=LinearPDE(rod)
58 mypde.setSymmetryOn()
59 mypde.setValue(A=kappa*kronecker(rod),D=rho/h,d=eta,y=eta*Tref)
60 # ... set heat source: ....
61
62 qH=q*whereZero(x[0])
63 # ... set initial temperature ....
64 T=Tref
65
66 # ... start iteration:
67 while t<=tend:
68 i+=1
69 t+=h
70 mypde.setValue(Y=qH+rho/h*T)
71 T=mypde.getSolution()
72 print T
73 saveVTK(os.path.join(save_path,"data%03d.vtu") %i,sol=T)
74
75 #~ command = ('mencoder',
76 #~ 'mf://*.png',
77 #~ '-mf',
78 #~ 'type=png:w=800:h=600:fps=25',
79 #~ '-ovc',
80 #~ 'lavc',
81 #~ '-lavcopts',
82 #~ 'vcodec=mpeg4',
83 #~ '-oac',
84 #~ 'copy',
85 #~ '-o',
86 #~ 'output.avi')
87

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