Page 306 - Introduction to Computational Fluid Dynamics

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APPENDIX B. 1D CONDUCTION CODE
Table B.1: List of variables 1D for conduction code. May 11, 2005 15:43
Variable Meaning
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ACF Array containing cross-sectional area (m ) at cell face w
AE, AW Array containing east and west coefficients
AL Domain length (m)
AP Array containing coefficient of variable P
COND Array containing conductivity (W/m-K) at node P
CONDREF Reference conductivity
CC Convergence criterion
DELT Time step (s)
DUM1,DUM2 Dummy arrays
FCMX Maximum absolute fractional change
GAUSS Logical – refers to Gauss–Seidel method
GREAT Parameter having a large value 10 30
H1SPEC Logical – refers to h-boundary condition at node 1
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HB1 Heat transfer coefficient (W/m -K) at node 1
HB1O Heat transfer coefficient at node 1 at old time
HBN Heat transfer coefficient at node N
HBNO Heat transfer coefficient at node N at old time
HNSPEC Logical – refers to h-boundary condition at node N
HPREF Heat transfer coefficient at any x
HPREFO Heat transfer coefficient at any x at old time
ISTOP STOP index – used in unsteady problems
IT Parameter containing array size
ITER Iteration counter
ITERMX Maximum number of allowable iterations
N Total number of nodes
NTIME Current time counter
PERIM Array containing perimeter (m) at any x
PI Value of π
PSI Variable for choosing explicit/implicit scheme
Q1SPEC Logical – refers to q-boundary condition at node 1
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QB1 Heat flux (W/m ) at node 1
QB1O Heat flux at node 1 at old time
QBN Heat flux at node N
QBNO Heat flux at node N at old time
QNSPEC Logical – refers to q-boundary condition at node N
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RHO Array for density (kg/m )
RP Relaxation parameter α
SMALL Parameter having a small value 10 −30
SP Array containing Sp
SPH Array containing specific heat (J/kg-K) at node P
SPHREF Reference specific heat
STAB Array for storing boundary coefficients
STEADY Logical – refers to steady-state calculation
SU Array containing Su

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