TALK=F;RUN( 1, 1)
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Q1 created by VDI menu, Version 3.6, Date 01/04/04
CPVNAM=VDI;SPPNAM=Core
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Echo DISPLAY / USE settings
DISPLAY
This case is like 370, but use the x-direction instead of z.
An InForm-made box object moves uniformly along a duct, the
cross-section of which it wholly fills.
The duct contains a porous medium causing resistance to flow
The ends of the duct are partially open.
The fluid is compressible.
Parameters are provided which enable the effects on convergence
and accuracy to be noted of:
* box size divided by cell size;
* time to traverse a cell divided by time step;
* the compressibility factor;
* the resistance coefficient;
* pressure-drop coefficients at the ends of the duct.
Line-printer profile plots are used for assisting interpretation
ENDDIS
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IRUNN = 1 ;LIBREF = 372
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GROUP 1. Run title and other preliminaries
TEXT(MOFOR - In-Form: BOX linear motion in X-dir
save1begin
Initial data of problem
-----------------------
delaration of parameters
REAL(BXSZFAC,TIMEFAC,COMPFAC,INPCO,OUTPCO,RESCO) ! delarations
! settings
BXSZFAC=1.0 ! box size divided by cell size
TIMEFAC=1.0 ! time to traverse a cell divided by time step
COMPFAC=0.1 ! compressibility factor
INPCO=1.0 ! inlet pressure coefficient
OUTPCO=1.0 ! outlet pressure coefficient
RESCO=10.0 ! resistance to flow coefficient
save1end
TLAST=1.0 ! PIL variables
XULAST=1.0
LSTEP=50
NX= 50
GROUP 2. Transience; time-step specification
STEADY=F;GRDPWR(T,LSTEP,TLAST,1.0)
GROUP 3. X-direction grid specification
GRDPWR(X,NX,XULAST,1.0)
GROUP 4. Y-direction grid specification
GRDPWR(Y,1,2.0,1.0)
GROUP 5. Z-direction grid specification
GRDPWR(Z,1,0.1,1.0)
GROUP 7. Variables stored, solved & named
SOLVE(P1,U1,C1)
STORE(OBID,PRPS)
terms(c1,n,y,n,p,p,p)
PATCH(INIC1,INIVAL,1,nx/5,1,1,1,1,1,1)
COVAL(INIC1,C1,0.0,1.0)
GROUP 13. Boundary conditions and special sources
PATCH(RESIST,VOLUME,1,NX,1,1,1,NZ,1,LSTEP)
COVAL(RESIST,U1,RESCO,0.0)
** Inlet and outlet
PATCH(INLET,CELL,1,1,1,NY,1,1,1,LSTEP)
COVAL(INLET,P1,INPCO,0.0)
COVAL(INLET,C1,ONLYMS,1.0)
PATCH(OUTLET,CELL,NX,NX,1,NY,1,1,1,LSTEP)
COVAL(OUTLET,P1,OUTPCO,0.0)
** The space within which box may move
PATCH(IMOFOR,VOLUME,1,NX,1,NY,1,NZ,1,LSTEP)
INFORM13BEGIN
store(rho1)
(property rho1 is 1.0+ :compfac:*p1) ! density depends on pressure
(property drh1dp is :compfac:)
relax(p1,linrlx,0.1)
relax(rho1,linrlx,0.1)
denpco=t
** Moving box
REAL(XCELL,TSTEP,TCELL,REALNX,REALNT,VEL) ! declaration of reals
realnx=nx
realnt=lstep
tstep=tlast/realnt ! size of time step
xcell=xulast/realnx ! size of cell
tcell=tstep*timefac ! time to traverse cell
vel=xcell/tcell ! velocity of box motion
CHAR(XPS,YPS,ZPS,UVEL)
uvel=:vel:
xps=0.15*xulast + :uvel:*tim
yps=0.0
zps=0.0
uvel
(MOVOB of BOX is POS(:XPS:&:YPS:&:ZPS:&0&0&0))
INFORM13END
INFORM7BEGIN
STORE(SOU1,APU1,AEP1,RSU1,FLOX)
(STORED OF SOU1 IS SORC(U1))
(STORED OF APU1 IS APCO(U1))
(STORED OF AEP1 IS AECO(P1))
(STORED OF RSU1 IS RESI(U1))
(STORED OF FLOX IS RHO1*U1)
INFORM7END
SPEDAT(SET,MOFOR,MOFFILE,C,NOTSET)
GROUP 15. Termination of sweeps
LSWEEP=60
GROUP 22. Spot-value print-out
NPRMON=LSWEEP;IZMON=NZ/2
SPEDAT(SET,GXMONI,TRANSIENT,L,F)
GROUP 23. Print-out & plot control
TSTSWP=-1
selref=t; resfac=1.e-2
NXPRIN=1;NYPRIN=1;NTPRIN=10
! line-printer profiles
do ii=ntprin,lstep,ntprin
patch(xplot:ii:,profil,1,nx-1,1,1,1,1,:ii:,:ii:)
coval(xplot:ii:,p1,0.0,0.0)
coval(xplot:ii:,u1,0.0,0.0)
coval(xplot:ii:,rho1,0.8,1.2)
coval(xplot:ii:,flox,0.0,0.0)
coval(xplot:ii:,c1,0.0,2.0)
enddo
DISTIL=T
EX(P1)=1.829E-02; EX(U1)=1.301E-01
EX(C1)=9.001E-01; EX(FLOX)=1.274E-01
EX(RSU1)=5.231E-06; EX(AEP1)=1.452E-01
EX(APU1)=2.697E-01; EX(SOU1)=2.482E-04
EX(RHO1)=9.996E-01
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GVIEW(P,0.000000E+00,-1.000000E+00,0.000000E+00)
GVIEW(UP,0.000000E+00,0.000000E+00,1.000000E+00)
> DOM, SIZE, 1.000000E+00, 2.000000E+00, 1.000000E-01
> DOM, MONIT, 2.550000E-01, 1.000000E+00, 5.000000E-02
> DOM, SCALE, 1.000000E+00, 1.000000E+00, 1.000000E+00
> DOM, SNAPSIZE, 1.000000E-02
> OBJ, NAME, INLET
> OBJ, POSITION, 0.000000E+00, 0.000000E+00, 0.000000E+00
> OBJ, SIZE, 1.000000E-02, 2.000000E+00, 1.000000E-01
> OBJ, GEOMETRY, default
> OBJ, ROTATION24, 1
> OBJ, TYPE, CELLTYPE
> OBJ, NAME, OUTLET
> OBJ, POSITION, 9.900000E-01, 0.000000E+00, 0.000000E+00
> OBJ, SIZE, 9.999990E-03, 2.000000E+00, 1.000000E-01
> OBJ, GEOMETRY, default
> OBJ, ROTATION24, 1
> OBJ, TYPE, CELLTYPE
> OBJ, NAME, BOX
> OBJ, POSITION, 0.000000E+00, 0.000000E+00, 0.000000E+00
> OBJ, SIZE, 1.000000E-02, 2.000000E+00, 1.000000E-01
> OBJ, GEOMETRY, cube14
> OBJ, ROTATION24, 1
> OBJ, TYPE, BLOCKAGE
> OBJ, MATERIAL, 198,Solid with smooth-wall friction
> OBJ, TIME_LIMITS, ALWAYS_ACTIVE
lsg57=t
#maxabs
STOP