List of Variables in Computer Programs

LIST OF IMPORTANT VARIABLES IN COMPUTER PROGRAMS ABSORP

m-'

ABSPR

m-l

AKD AK (NG) AL

m-'

AM ANEWG (NG) A N E W (NW) ANRAY AS ASG (NG) ASW (NW) AVHG BNEWG (NG)

kW/m3

B N E W (NW) CNEWG CNEWW CP (NG) CPO DAK DELTAT

J/kg K-' J/kg K-'

DLW (NW) DXG DYG E3 (X> EM (NW) EM1, EM2 ERR

m m m

calculated absorption rate of a unit length exact value of absorption rate of a unit length optical thickness of gas layer gas absorption coefficient direction cosine of energy particle locus along X axis direction cosine of energy particle locus along Y axis coefficient of equation for TG of gas element coefficient of equation for TW of wall element real function of NRAY self-absorption ratio self-absorption ratio of gas element self-absorption ratio of wall element average heat load in furnace coefficient of equation for TG of gas element coefficient of equation for TW of wall element coefficient of equation for TG of gas element coefficient of equation for TW of wall element specific heat of gas specific heat of inlet gas optical thickness of a gas element correction of T by Newton-Raphson method length of wall element width of gas element height of gas element third exponential integral function wall emissivity wall emissivity maximum relative correction of TGs and TWS

204

LIST OF IMPORTANT VARIABLES IN COMPUTER PROGRAMS

ERRG ERRN ERRW ETA ETAG ETAW GG GM GMF (IW,NG)

rad rad rad m' kg/m2 sec-' kg/m2 seckg/m2 sec-'

GMF2 (IW,NG)

kg/m2 sec-'

GP (NG)

H (NW) INDABS INDFL INDFUL INDGW (NG) INDGWC INDNTl (IW, NG) INDNT2 (IW, NG) INDXT OW, NG) INDRDP INDWBC (NW) INRAY IUP IW

W/m2 K - '

205

relative correction of T G for each gas element error in iteration of Newton-Raphson method relative correction of TW for each wall element polar angle polar angle polar angle total exchange area incoming mass flow incoming mass flow through IWth boundary of gas element NG incoming mass flow through IWth boundary of gas element NG incoming mass flow through IWth boundary of gas element NG data of gas elements transferred to subroutine PRTDAT heat transfer coefficient index of adsorption, 1 : absorbed, 0 : transmitted or reflected 1 : luminous flame, 0 : nonluminous flame 1 : full load, 0: half load 1 :gas element, 0 : out of the system index of next element, 1 : gas, 0 :wall number of element next to IWth boundary, > O:wall, < 0:gas number of element next to IWth boundary, > O:wall, < 0:gas number of element next to IWth boundary, > O:wall, < 0:gas 1 : print READ values, 0 : supress printing READ values boundary condition of wall element 1 :temperature given, 0 : heat flux given number of energy particles already emitted number of upstream gas elements index of gas element boundary, 1 :left, 2 :top, 3 : right, 4 :bottom

206

LIST OF IMPORTANT VARIABLES IN COMPUTER PROGRAMS

IWMAX IX 1x4

IXT IY IYA IYT

KA N ndisp NG NG2 NGE NGET NGIN NGM NGMAX NGS NRAY NRD NW NWE NWH NWM NWMAX NWS OUTRAY PAI

maximum value of IW number of emitting element in X coordinate number of absorbing element in X coordinate number of target element in X coordinate number of emitting element in Y coordinate number of absorbing element in Y coordinate number of target element in Y coordinate 1: emitted from wall, 0 :emitted from gas number of division of gas layer index used to display the number of emitted particles number of gas elements ( = NG - 20) number of gas elements where energy particle exits at the time number of next element number of gas elements in the system maximum value of NG maximum value of NG number of source gas elements in QRIN calculation number of energy particles emitted from a gas element number of absorbed energy particles number of wall elements number of wall element on which energy particle collide number of next wall element maximum value of NW maximum value of NW number of source-wall elements in QRIN calculation energy particle numbers absorbed outside the emitting element the circular constant

LIST OF IMPORTANT VARIABLES IN COMPUTER PROGRAMS

207

heat load in gas element nondimensional wall heat flux absorbed radiative energy by gas eleW ment absorbed radiative energy by wall eleQRINW W ment net wall heat flux W/m2 QW ( N W ) uniform random number RAN seed of random number RAND READ value RD READ value between gas-gas elements RDGG (NG, NG) READ value between gas-wall elements RDGW (NG, NW) READ value between wall-gas elements RDWG (NW, NG) READ value between wall-wall eleRDWM (NW, NW) ments traveling length of energy particle m S variable used for obtaining pass length m s (IW) within a gas element total exchange area between bounding SlS1, s s2 walls total exchange area between wall and SG gas elements W/m2 K 4 Stefan-Boltzmann constant SBC pass length within a gas element m SMIN (minimum of positive S(IW)s) area of wall element m2 SW (NW) gas-element temperature K TG (NG) inlet gas temperature K TGO azimuthal angle rad THTA kg/m * sec-' total mass inflow TMASSF initial value of T in Newton-Raphson TN method K wall element temperature Tw (NW) K wall temperature Twl, Tw2 m3 gas element volume VG data of wall elements transferred to WP (NW) subroutine PRTDAT X coordinate of emitting point of enm xo ergy particle X coordinate where locus of energy m x1, xw particle hits wall

QG (NG) QND QRING

w/m3

208

LIST OF IMPORTANT VARIABLES IN COMPUTER PROGRAMS

xc XCT XE

m

XI

m

XK YO

m

Y l , Yw

m

YE

m

YI

m

X coordinate of the center of the emitting element X coordinate of the center of the target element X coordinate of exit point of energy particle from gas element [X coordinate of end point of locus of energy particle (RAT1)l X coordinate of incident point of energy particle to gas element absorption length Y coordinate of emitting point of energy particle Y coordinate where locus of energy particle hits wall Y coordinate of exit point of energy particle from gas element [Y coordinate of end point of locus of energy particle (RAT1)I Y coordinate of incident point of energy particle to gas element