/[escript]/temp/doc/examples/pyvisi/heatedblock_with_pyvisi.py
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Annotation of /temp/doc/examples/pyvisi/heatedblock_with_pyvisi.py

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Revision 1148 - (hide annotations)
Wed May 16 22:45:33 2007 UTC (14 years ago) by jongui
Original Path: trunk/doc/examples/pyvisi/heatedblock_with_pyvisi.py
File MIME type: text/x-python
File size: 2112 byte(s)
Added the updated files for pyvisi and removed some incorrect reference images.
1 ksteube 1147 # Import the necessary modules.
2     from esys.escript import *
3     from esys.escript.linearPDEs import LinearPDE
4     from esys.finley import Brick
5     from esys.pyvisi import Scene, DataCollector, Velocity, Camera
6     from esys.pyvisi.constant import *
7 jongui 1148 import os
8 ksteube 1147
9 jongui 1148 PYVISI_EXAMPLE_IMAGES_PATH = "data_sample_images"
10 ksteube 1147 X_SIZE = 400
11     Y_SIZE = 400
12     JPG_RENDERER = Renderer.ONLINE_JPG
13    
14     #... set some parameters ...
15     lam=1.
16     mu=0.1
17     alpha=1.e-6
18     xc=[0.3,0.3,1.]
19     beta=8.
20     T_ref=0.
21     T_0=1.
22     #... generate domain ...
23     mydomain = Brick(l0=1.,l1=1., l2=1.,n0=10, n1=10, n2=10)
24     x=mydomain.getX()
25     #... set temperature ...
26     T=T_0*exp(-beta*length(x-xc))
27     #... open symmetric PDE ...
28     mypde=LinearPDE(mydomain)
29     mypde.setSymmetryOn()
30     #... set coefficients ...
31     C=Tensor4(0.,Function(mydomain))
32     for i in range(mydomain.getDim()):
33     for j in range(mydomain.getDim()):
34     C[i,i,j,j]+=lam
35     C[j,i,j,i]+=mu
36     C[j,i,i,j]+=mu
37     msk=whereZero(x[0])*[1.,0.,0.] \
38     +whereZero(x[1])*[0.,1.,0.] \
39     +whereZero(x[2])*[0.,0.,1.]
40     sigma0=(lam+2./3.*mu)*alpha*(T-T_ref)*kronecker(mydomain)
41     mypde.setValue(A=C,X=sigma0,q=msk)
42     #... solve pde ...
43     u=mypde.getSolution()
44     #... calculate von-Misses
45     g=grad(u)
46     sigma=mu*(g+transpose(g))+lam*trace(g)*kronecker(mydomain)-sigma0
47     sigma_mises=sqrt(((sigma[0,0]-sigma[1,1])**2+(sigma[1,1]-sigma[2,2])**2+ \
48     (sigma[2,2]-sigma[0,0])**2)/6. \
49     +sigma[0,1]**2 + sigma[1,2]**2 + sigma[2,0]**2)
50    
51     # Create a Scene.
52     s = Scene(renderer = JPG_RENDERER, x_size = X_SIZE, y_size = Y_SIZE)
53    
54     # Create a DataCollector reading directly from an escript object.
55     dc = DataCollector(source = Source.ESCRIPT)
56 jongui 1148 dc.setData(disp = u, stress = sigma_mises)
57 ksteube 1147
58     # Create a Velocity.
59     v = Velocity(scene = s, data_collector = dc, viewport = Viewport.SOUTH_WEST,
60     arrow = Arrow.THREE_D, color_mode = ColorMode.SCALAR,
61     lut = Lut.COLOR, cell_to_point = True, outline = True)
62     v.setScaleFactor(scale_factor = 0.3)
63    
64     # Create a Camera.
65 jongui 1148 c = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
66 ksteube 1147 c.isometricView()
67    
68 jongui 1148
69 ksteube 1147 # Render the object.
70 jongui 1148 s.render(image_name = os.path.join(PYVISI_EXAMPLE_IMAGES_PATH,\
71     "heatedblock.jpg"))

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