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CHAPTER 7: PROBLEMS WITH NON-ORTHOGONAL GRIDS
Shortcuts:
CASE 7.01: PARALLELOPIPED CAVITY WITH MOVING WALL - March 2, 1996
CASE 7.02: FLOW AND HEAT TRANSFER IN AN ANNULAR SPACE
CASE 7.03: FLOW IN A TRAPIZOIDAL SPACE
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TITLE CASE 7.01: PARALLELOPIPED CAVITY WITH MOVING WALL - March 2, 1996
/-----------------------------------------------------------------------/
/
GRID NODEs BY 22 BY 22
/
COORDINATE CORNers (0,0), (1,0) (1,1) (2,1)
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BOUNDARY P: at boundary X-, FLUX = 1.0
BOUNDARY P: at boundary Y-, FLUX = 0
BOUNDARY P: at boundary Y+, FLUX = 0
/
BOUNDARY T: at boundary X+, VALUE = -100
BOUNDARY T: at boundary Y-, VALUE = 0
BOUNDARY T: at boundary Y+, VALUE = 100
/
/LIMIT T MAX 300 MIN -300
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HYDRaulic ss=0. kx=1., ky = 1.
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DENSity = 1000.0
FLUId: SPECific heat = 4185
FLUId: thermal CONDuctivity = 2.05E+07
/
ROCK density = 2780
ROCK porosity = 0.001
THERmal Ce = 850.0 Ke = 5.0E+07
/
DIAGNOSTIC NODE AT (6,6) every 20
DEBUG GEOMETRY OFF
CONVergence tolerance 1.E-7
/
SOLVE FOR 300 IN STEADY MODE
SAVE 'C71.ARC'
/
END
/
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TITLE CASE 7.02: FLOW AND HEAT TRANSFER IN AN ANNULAR SPACE
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GRID NODEs 22 by 22
GEOM ANNULus: R_out = 1.625, R_in=0.625 ecc = -0.623
GEOMetry ROTAte X and Y by 270 degrees
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HYDRaulic ss=0. kx=1., ky = 1.
/
DENSity = 1000.0
FLUId: SPECific heat = 4185
FLUId: thermal CONDuctivity = 2.05E+07
ROCK density = 2780
ROCK porosity = 0.001
THERmal Ce = 850.0 Ke = 5.0E+07
/
BOUNdary X- P = 1
BOUNdary X+ P = 0.
BOUNdary Y- FLUX of P = 0.
BOUNdary Y+ FLUX of P = 0.
BOUNdary for T at Y- face value is = 100.
BOUNdary for T at Y+ face value is = 0.
BOUNdary for T at X+ face gradient is = 0.
/
SET T is = 0 everwhere
REFErence T = 0.
/
DIAGnostic output at node (16,11); print every 10 steps
DEBUG GEOMETRY OFF
CONVergence tolerance of 1.E-8
/
OUTPut in NARRow mode
SAVE on file 'C72.ARC'
SOLVE in STEAdy mode for a maximum of 1000 steps minimum 200 steps
/
END
/
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**********************************************************************
TITLE CASE 7.03: FLOW IN A TRAPIZOIDAL SPACE
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/
GRID NODEs is 22 by 22
/
COORdinate corners (0, -.0127) (.0768, -.0333) (0, .0127) (.0768,
.0333)
/
***>>> Activate next command to see effect of 2nd_order diffusion
terms
/DIFFusion full BFC mode with complete second order terms
/
BOUNDARY P: at boundary X-, FLUX = 1.0
BOUNDARY P: at boundary Y-, FLUX = 0
BOUNDARY P: at boundary Y+, FLUX = 0
/
BOUNDARY T: at boundary X-, VALUE = 50
BOUNDARY T: at boundary X+, GRAD = 0
BOUNDARY T: at boundary Y-, VALUE = 0
BOUNDARY T: at boundary Y+, VALUE = 100
/
HYDRaulic ss=0. kx=1., ky = 1.
DENSity = 1000.0
FLUId: SPECific heat = 4185
FLUId: thermal CONDuctivity = 2.05E+07
ROCK density = 2780
ROCK porosity = 0.001
THERmal Ce = 850.0 Ke = 5.0E+07
/
DIAGnostic output at node (11,11); print every 50 steps
DEBUG GEOMETRY OFF
CONVergence tolerance of 1.E-10
/
OUTPut in NARRow mode
SAVE on file 'C74.ARC'
SOLVE in STEAdy mode for a maximum of 3000 steps
/
END
/
/
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