TALK=T;RUN(1,1)
display
*
This example Q1 demonstrates the use line-curve
option for BFC-type grid. This option is used to
create a spline curve between two end-points through
the user-set points, and with the user-set starting
end ending curvature.
In this example, line-curvature is used to create
car-body-like profile which is then copied to
create simplified car body.
*
Set the grid type to BFC
*
Enter the overall length of the car (default 3.85m)
Characteristic length(CL) is calculated as length/55
Input data used in this example:
*
-- Create a car profile --
Define points A,B,C and D
Point A positioned at (0,0,0)
GSET(P,A,0,0,0)
Point B positioned at (0,1.05,0.84)
GSET(P,B,0,cl*15,cl*12)
Point C positioned at (0,1.96,1.4)
GSET(P,C,0,cl*28,cl*20)
Point D positioned at (0,3.85,0)
*
Draw four curves (AB,BC,CD,DA) from A to D
to create a car-profile.
Lines AB&CD must have equal number of cells, as
well as lines BC&DA. Power is set to 1.0, ie. cells
are uniformly distributed.
Enter number of cells for AB(&CD) lines (default 5)
Start a spline curve C1 at point A.
GSET(V,C1,S,A,SPLINE)
Start with a zero-curvature; ie. allow program
to fit curve between points and decide curvature.
GSET(V,0,0,0)
GSET(V,0,0,0)
Define point on a curve (0,0.07,0.35)
GSET(V,0,cl*1,cl*5)
Define point on a curve (0,0.21,0.63)
GSET(V,0,cl*3,cl*9)
End spline curve at point B.
GSET(V,C1,E,B)
uniformly distributed cells, using curve C1.
Enter number of cells for BC(&DA) lines (default 5)
Start a spline curve C2 at point B.
GSET(V,C2,S,B,SPLINE)
Define point on a curve (0,1.33,1.12)
GSET(V,0,cl*19,cl*16)
Define point on a curve (0,1.61,1.3)
GSET(V,0,cl*23,cl*18.5))
End spline curve at point C.
GSET(V,C2,E,C)
uniformly distributed cells, using curve C2.
Start a spline curve C3 at point C.
GSET(V,C3,S,C,SPLINE)
Define point on a curve (0,2.66,1.3)
GSET(V,0,cl*38,cl*18.5)
Define point on a curve (0,3.29,0.98)
GSET(V,0,cl*47,cl*14)
Define point on a curve (0,3.64,0.63)
GSET(V,0,cl*52,cl*9)
Define point on a curve (0,3.78,0.35)
GSET(V,0,cl*54,cl*5)
End spline curve at point D.
GSET(V,C3,E,D)
uniformly distributed cells, using curve C3.
uniformly distributed cells.
GSET(L,DA,D,A,nbc,1.0)
Define frame ABCD (car profile) which has corner points
A,B,C,D
*
Enter number of cells in I (car-width) direction (def. 10)
Set the BFC grid dimension as nx x nbc x nab cells with
reference length width x length x height.
*
Match grid plane I1 on frame ABCD using the
trans-finite interpolation method
*
with a distance (dx=width,dy=0,dz=0), including internal
planes;internal planes are uniformly distributed, hence
power is set to 1.
enddis
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(CURVATURE_FOR_CAR_BODYB541 )
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 1
************************************************************
Group 2. Time dependence
STEADY = T
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 1
XULAST =1.54
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 5
YVLAST =3.85
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 5
ZWLAST =1.4
************************************************************
Group 6. Body-Fitted Coordinates
BFC = T ;NONORT = F
NCRT = -1
RSTGEO = F ;SAVGEO = F
UUP = F ;VUP = F ;WUP = F
NGEOM =CHAM
NAMXYZ =CHAM
ANGMIN =20.
DOMAIN( 1, 1, 1, 6, 1, 6)
* Set fixed sub-domain
FIXDOM( 1, 0, 0, 0, 0, 0, 0)
FIXDOM( 2, 0, 0, 0, 0, 0, 0)
FIXDOM( 3, 0, 0, 0, 0, 0, 0)
FIXDOM( 4, 0, 0, 0, 0, 0, 0)
FIXDOM( 5, 0, 0, 0, 0, 0, 0)
FIXDOM( 6, 0, 0, 0, 0, 0, 0)
FIXDOM( 7, 0, 0, 0, 0, 0, 0)
FIXDOM( 8, 0, 0, 0, 0, 0, 0)
FIXDOM( 9, 0, 0, 0, 0, 0, 0)
FIXDOM( 10, 0, 0, 0, 0, 0, 0)
LIJ = F ;LJK = T ;LIK = F
IMON = 1 ;JMON = 3 ;KMON = 3
************************************************************
Group 7. Variables: STOREd,SOLVEd,NAMEd
ONEPHS = T
* Y in SOLUTN argument list denotes:
* 1-stored 2-solved 3-whole-field
* 4-point-by-point 5-explicit 6-harmonic averaging
************************************************************
Group 8. Terms & Devices
* Y in TERMS argument list denotes:
* 1-built-in source 2-convection 3-diffusion 4-transient
* 5-first phase variable 6-interphase transport
DIFCUT =0.5 ;ZDIFAC =1.
GALA = F ;ADDDIF = F
ISOLX = -1 ;ISOLY = -1 ;ISOLZ = -1
************************************************************
Group 9. Properties used if PRPS is not
stored, and where PRPS = -1.0 if it is!
RHO1 =1. ;TMP1 =0. ;EL1 =0.
TSURR =0. ;TEMP0 =0. ;PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
EMISS =0. ;SCATT =0.
RADIA =0. ;RADIB =0.
ENUL =1.0E-05 ;ENUT =0.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
No PATCHes yet used for this Group
INIADD = F
FSWEEP = 1
NAMFI =CHAM
************************************************************
Group 12. Patchwise adjustment of terms
Patches for this group are printed with those
for Group 13.
Their names begin either with GP12 or &
************************************************************
Group 13. Boundary & Special Sources
No PATCHes yet used for this Group
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 1 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-05
************************************************************
Group 16. Terminate Iterations
************************************************************
Group 17. Relaxation
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
ISG62 = 1
SPEDAT(SET,GXMONI,PLOTALL,L,T)
************************************************************
Group 20. Preliminary Printout
************************************************************
Group 21. Print-out of Variables
INIFLD = F ;SUBWGR = F
* Y in OUTPUT argument list denotes:
* 1-field 2-correction-eq. monitor 3-selective dumping
* 4-whole-field residual 5-spot-value table 6-residual table
************************************************************
Group 22. Monitor Print-Out
IXMON = 1 ;IYMON = 1 ;IZMON = 1
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = 1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000
NZPRIN = -1 ;IZPRF = 1 ;IZPRL = 10000
XZPR = F ;YZPR = F
IPLTF = 1 ;IPLTL = -1 ;NPLT = -1
ISWPRF = 1 ;ISWPRL = 100000
ITABL = 3 ;IPROF = 1
ABSIZ =0.5 ;ORSIZ =0.4
NTZPRF = 1 ;NCOLPF = 50
ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20
No PATCHes yet used for this Group
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
STOP