ENC_Q.HTM

Q1 file Q2 Q3 Q1EAR Q1PIN Q1QUIT QCOM Quadratic sources and sinks QUIT

Q1PIN file

Q1QUIT

---------- PIL logical, default F -------

When set to T in a Q1 file, Q1QUIT will suppress the interactive session regardless of the setting of TALK.
If set to T interactively, it will act as if END had been entered. In either case, the Q1 file will also be unconditionally overwritten by the instruction stack or the COPYQ1 file, depending on the setting of DMPSTK.

Q2

When the PHOENICS Satellite module has finished processing all the information which it has read from the Q1 file and/or received interactively from the user, but before it writes the Q1EAR, EARDAT and FACETDAT files, it looks for a file called Q2 in the working directory.

If the file does not exist, it proceeds to write the files; however, if Q2 does exist, it processes any PIL, In-Form or > OBJ and, if they are legitimate, appropriately modifies what it subsequently writes to Q1ear etc.

For example, if the Q2 contains the single line:

restrt(all)

inspection of the subsequently-written Q1EAR will reveal that the FIINIT values of all variables have been set equal to READFI.

Similarly, if the Q2 contains object-introducing lines such as:


> OBJ,    NAME,        CYL
> OBJ,    POSITION,    xposcyl, yposcyl, zposcyl
> OBJ,    SIZE,        xsizcyl, ysizcyl, zsizcyl
> OBJ,    GEOMETRY,    cylinder
> OBJ,    ROTATION24,        1
> OBJ,    TYPE,        BLOCKAGE
> OBJ,    MATERIAL,    198,Solid with smooth-wall friction

the presence of the new object will be recognised by the following lines in Q1EAR:

 SPEDAT(SET,CYL,DATFILE,C,cylinder)
 SPEDAT(SET,OBJNAM,^OB3,C,CYL)
 SPEDAT(SET,OBJTYP,^OB3,C,BLOCKAGE)
 SPEDAT(SET,CYL,MATERIAL,R,198.)

the following in EARDAT:

 CYL       DATFILE        Ccylinder
 OBJNAM    ^OB3           CCYL
 OBJTYP    ^OB3           CBLOCKAGE
 CYL       MATERIAL       R198.

and the following in FACETDAT:

OBJECT=     3  NFACETS=   300  OBJNAM = CYL      IOBJTYP =      7  OBJCLASS = VOL-OBJECT

A distinction should be observed however between these two examples, namely:

the first, being concerned with PIL variables over-writes the previously-set (or default) FIINIT values; but
the second, being object-related, is allowed only for introducing new items. Indeed, if an object with the name CYL existed already in the Q1 file, the Satelite would issue a warning about the illegitimacy of using the same name twice; and the second object would not be accepted.

Q3

A file named Q3 is used by the PRELUDE pre-pre-processor module of PHOENICS in order to save data-settings which have been made inter-actively. Unlike the Q1 file written by the Satellite pre-processor, the Q3 preseves the relations between data items.

QCOM

-------------- Command ----------------

QCOM(....This command writes anything to the right of the left parenthesis to COPYQ1, which can later be dumped to the Q1 file.

For example, QCOM(BFC=T will write the line: BFC=T to COPYQ1, and QCOM(SOLUTN(P1,Y,Y,Y,Y,Y,Y) will write the line: SOLUTN(P1,Y,Y,Y,Y,Y,Y) to COPYQ1.

However, QCOM does not cause the SATELLITE to interpret what is written to COPYQ1, for example, QCOM(BFC=T will not set BFC to TRUE.

Quadratic sources and sinks

See COVAL for information about how to create patches which provide sources which are proportional (VAlue - Phi) **2

QUIT

--------------------------------------- Photon Help ----

[Quit] the current PHOTON session.

wbs