BFC multi-blocking.....help!!!
 

I'm learning about BFC,,but I'm having problems with multi-blocking. We have Phoenics 2.2..When I use MPATCH and READCO and reload the q1,,the geometry looks good in the menu...but when I return to the main menu to apply boundaries...the geometry becomes distorted and scattered that its hard to make the boundaries...Please help........

Re: BFC multi-blocking.....help!!!
 

It would be helpful if you would post the Q1 file you are using. How have you prepared the multi-block grid? Have you used a grid generation tool or have you done that in PIL? For up-to-date multi-block grid generation there is no way around external meshing tools.

regards

Volker

Re: BFC multi-blocking.....help!!!
 

Thanks....I was doing this tutorial about a T-duct,,,connecting 2 blocks by extending a dummy cell..and using MPATCH and READCO to combine them..So..I probably modified some of q1 not using any grid generation tool except satellite.

Here is the q1 file....

TALK=T;RUN( 1, 1);VDU=VGAMOUSE ************************************************** **********

Q1 created by GENERAL menu, Version 2.2, Date 17/09/96 CHAR(CPVNAM);CPVNAM=GENERAL ************************************************** ********** IRUNN = 1 ;LIBREF = 0 ************************************************** ********** Group 1. Run Title TEXT(No title has been set for this run. ) ************************************************** ********** Group 2. Transience STEADY = T ************************************************** ********** Groups 3, 4, 5 Grid Information

* Overall number of cells, RSET(M,NX,NY,NZ,tolerance) RSET(M,21,16,1)

* Set overall domain extent:

* xulast yvlast zwlast name XSI= 1.000E+00;YSI= 1.000E+00;ZSI= 1.000E+00;RSET(D,CHAM ) ************************************************** ********** Group 6. Body-Fitted coordinates BFC=T READCO(gri2)

********** NONORT = T NUMBLK = 2

* X-cyclic boundaries switched ************************************************** ********** Group 7. Variables: STOREd,SOLVEd,NAMEd ONEPHS = T

* Non-default variable names NAME( 49) =DEN1 ; NAME( 50) =PRPS STORE(PRPS,DEN1)

************************************************** ********** Group 8. Terms & Devices NEWRH1 = T ************************************************** ********** Group 9. Properties RHO1 = GRND10 CP1 = 1.005E+03 ENUL = 1.000E-05 ;ENUT = 0.000E+00 ************************************************** ********** Group 10.Inter-Phase Transfer Processes ************************************************** ********** Group 11.Initialise Var/Porosity Fields FIINIT(PRPS) = 0.000E+00

No PATCHes used for this Group

INIADD = T ************************************************** ********** Group 12. Convection and diffusion adjustments

No PATCHes used for this Group ************************************************** ********** Group 13. Boundary & Special Sources

PATCH (MBD1 ,CELL ,1,5,1,16,1,1,#1,#1)

PATCH (MBD2 ,CELL ,7,21,1,6,1,1,#1,#1)

PATCH (MBL1-2 ,NORTH ,1,5,16,16,1,1,#1,#1)

PATCH (MBL2-1 ,SOUTH ,12,16,2,2,1,1,#1,#1)

EGWF = T ************************************************** ********** Group 14. Downstream Pressure For PARAB ************************************************** ********** Group 15. Terminate Sweeps LSWEEP = 1 SELREF = T RESFAC = 1.000E-03 ************************************************** ********** Group 16. Terminate Iterations ************************************************** ********** Group 17. Relaxation ************************************************** ********** Group 18. Limits ************************************************** ********** Group 19. EARTH Calls To GROUND Station ************************************************** ********** Group 20. Preliminary Printout ECHO = T ************************************************** ********** Group 21. Print-out of Variables ************************************************** ********** Group 22. Monitor Print-Out IXMON = 10 ;IYMON = 8 ;IZMON = 1 NPRMNT = 1 TSTSWP = -1 ************************************************** ********** Group 23.Field Print-Out & Plot Control

No PATCHes used for this Group ************************************************** ********** Group 24. Dumps For Restarts ************************************************** ********** MENSAV(S,RELX,DEF,4.7619E-02,1.0000E-05,0) MENSAV(S,PHSPROP,DEF,200,0,1.1890E+00,1.0000E-05) MENSAV(S,FLPRP,DEF,LAMINAR,NOTSET,AIR-CONSTANT) M STOP