#cls
DISPLAY
Start of direct-input-to-EARTH data
This is an example of the direct Q1-to-EARTH feature, which
allows extensive text input as well as input of variables.
The feature is activated by the setting: READQ1 = T.
A few items of frequent use may be inserted directly, namely:
LSWEEP, LSTEP, ISOLX, ISOLY, ISOLZ, ISOLBK, RHO1, ENUL, ENUT,
CFIPS, CMDOT, CARTES, STEADY, NONORT
Arrayed variable such as PRNDTL(INDVAR), LITER(INDVAR) and
NAME(INDVAR) may be entered as: (1) array name, (2) numerical
value of INDVAR, (3) value, followed by comments if desired.
#pause
Others variables may be entered via: (1) SATEAR COMMON block name,
(2) position in block, (3) value, followed by comments if desired,
as in the following example. The complete entry will be printed
near the top of the RESULT file. The position of the item in the
block can of course be found by counting. However, GUIDE contains
a helpful table (see NEWS).
An asterisk at the beginning of the line cause the line to be
ignored.
This feature must be used with caution, because some resettings of
data may conflict with settings made in the satellite. For
example, whole-field solution cannot necessarily be switched ON
because necessary storage may not be provided; but it may be
switched OFF (by dividing the relevant ISLN by 5).
#pause
READQ1 will first search for the string 'BEGIN' and only then will
it start to interpret the following lines as data. Note also that
the lines intended for READQ1 must be entered as comment lines in
the Q1 or SATELLITE will attempt to interpret them as command
lines and flag an error.
READQ1_BEGIN
LSWEEP 10
ISOLZ 1
CARTES F
LITER 14 100 ...liter(H1)
* ISLN 14 6 ...solution set to whole field for h1
PRNDTL 14 0.01 ...prndtl(H1)
NAME 7 aw1 ...name of W1
LDAT 25 t ...echo
READQ1_END
* End of direct-input-to-EARTH data
#pause
GROUP 1. Run title and other preliminaries
TEXT(2D Channel Flow
TITLE
DISPLAY
This run illustrates what happens when a fluid enters a
rectangular duct, the walls of which are held at a constant
temperature.
Interesting parameters to vary include:- entry values of scalar
quantities; the flux boundary conditions on the wall, and length-
to-width ratio.
ENDDIS
#pause
GROUP 4. Y-direction grid specification
NREGY=1
IREGY=1; GRDPWR(Y,5,1.0,1.0)
GROUP 5. Z-direction grid specification
NREGZ=1
IREGZ=1; GRDPWR(Z,5,2.0,1.0)
GROUP 7. Variables stored, solved & named
SOLVE(P1,V1,W1,H1)
NAME(H1)=TEMP
SOLUTN(TEMP,Y,Y,Y,P,P,P)
GROUP 8. Terms (in differential equations) & devices
TERMS(TEMP,N,Y,Y,Y,Y,Y)
GROUP 9. Properties of the medium (or media)
ENUL=1.E-1; PRNDTL(TEMP)=0.7
GROUP 13. Boundary conditions and special sources
** Inlet
INLET(IN,LOW,#1,#1,#1,#NREGY,#1,#1,1,1)
VALUE(IN,P1,5.0);VALUE(IN,W1,5.0)
VALUE(IN,V1,0.0);VALUE(IN,TEMP,9.0)
** Outlet
PATCH(OUTLET,HIGH,#1,#1,#1,#NREGY,#NREGZ,#NREGZ,1,1)
COVAL(OUTLET,P1,FIXP,0.0)
COVAL(OUTLET,V1,ONLYMS,0.0);COVAL(OUTLET,W1,ONLYMS,0.0)
** North wall
WALL (NORTH,NORTH,#1,#1,#NREGY,#NREGY,#1,#NREGZ,1,1)
COVAL(NORTH,W1,1.0,0.0);COVAL(NORTH,TEMP,1.0,0.0)
GROUP 15. Termination of sweeps
LSWEEP=20
RESREF(P1)=1.E-5;RESREF(V1)=1.E-5;RESREF(W1)=1.E-5
RESREF(TEMP)=1.E-5
GROUP 19. Data communicated by satellite to GROUND
!! Activate the next line if direct Q1-to-EARTH data input
is desired
READQ1=T
GROUP 22. Spot-value print-out
IYMON=1;IZMON=NZ-1
GROUP 23. Field print-out and plot control
NPRINT=20;NPLT=2
PATCH(ZEQ3,PROFIL,1,1,1,5,3,3,1,1)
PLOT(ZEQ3,W1,0.0,0.0);PLOT(ZEQ3,TEMP,0.0,0.0)
PATCH(YEQ1,PROFIL,1,1,1,1,1,NZ,1,1)
PLOT(YEQ1,W1,0.0,.0);PLOT(YEQ1,TEMP,0.0,0.0)
PATCH(MAP,CONTUR,1,1,1,NY,1,NZ,1,1)
PLOT(MAP,W1,0.0,10.0);PLOT(MAP,TEMP,0.0,10.0)