AUTOPLOT USE file ghis 2 data time tpar pl red @ 0.15252E+04 0.24165E+04 CR Particle temperature vers time@ @ 0.29479E+04 0.18238E+03 CR Time (sec.)@ @ 0.12817E+03 0.29181E+04 CR t(part.)@ @ 0.10189E+04 0.79466E+03 CR Press RETURN to exit.@ pause end ENDUSE TEXT(HEAT-EXCHANGING, 1-D : G302 TITLE DISPLAY Constant gas temperature, no slip. The particle temperature as a function of time is as follows: (A + B.Tg).log((Tg-Tp)/(Tg-T0)) + B(Tp-T0) = -alpha.t.mass where: A - constant in particle Cp formula alpha - particle heat transfer coefficient B - gradient of particle Cp vs. T function mass - particle mass t - time Tg - continuous-phase temperature Tp - particle temperature T0 - particle initial temperature ENDDIS REAL(WIN);WIN=100.0 GRDPWR(X,5,1.0,1.0) SOLVE(P1,U1);STORE(TMP1) TMP1=GRND1;TMP1A=500.0 FIINIT(U1)=WIN;FIINIT(P1)=RHO1*WIN;FIINIT(TMP1)=500.0 PATCH(GXIN,WEST,1,1,1,1,1,1,1,1) COVAL(GXIN,P1,FIXFLU,RHO1*WIN);COVAL(GXIN,U1,ONLYMS,WIN) PATCH(GXOUT,EAST,NX,NX,1,1,1,1,1,1) COVAL(GXOUT,P1,FIXP,0.0) LSWEEP=1 TRACE=F #GENTRA *------------------------------------------------------- * GENTRA GROUP 1: Particle physics *------------------------------------------------------- * Particle type - 40 - HEAT-EXCHANGING_PARTICLES GPTYPE=40 * Gravity components in GENTRA Cartesian system/buoyancy GGRAX=0;GGRAY=0;GGRAZ=0;GBUOYA=F * Stochastic model of turbulence GSTOCH=F * Data for particles with heat transfer GDRAG=GRND1;GKONC=3.3400E-02;GNUSS=1.9060E+01 GCPLIQ=GRND2;GHLIQD=GRND1 *------------------------------------------------------- * GENTRA GROUP 2: Boundary conditions for particles *------------------------------------------------------- * Inlet-data file-name GINFIL=Q1 * Use this space for inlet-data table if GINFIL=Q1*_XP_UP_DI_LDEN_MDOT_TEM_(NUM) 0.1 100 5e-5 8000 1e-6 1800 * Wall treatment, and rest coefficient if appropriate GWALLC=3;GWREST=1 * Porosity threshold GPOROS=0 *------------------------------------------------------- * GENTRA GROUP 3: Numerical controls *------------------------------------------------------- * 1st GENTRA sweep; frequency of calls GSWEP1=1;GSWEPF=1 * Maximum Lagrangian time-step; time step size multplier GDTMAX=1;GRTFRC=1 * Min # of t-steps per cell; max # of t-steps; timeout GLAGTS=5;GSTEMX=0;GTIMMX=0 *------------------------------------------------------- * GENTRA GROUP 4: Output controls *------------------------------------------------------- * Restart-file, history-file and frequency for output GRSFIL=NONE;GHFILE=GHIS;GOUTFR=1 * The identifier of the individual history and trajectory files GH1STC=NONE;GT1STC=NONE * The first, last particles and the interval for writing history and trajectory files NGWSTR=0;NGWEND=0;NGWINT=1 * Particle number for residence-time calculation GRESTI=0 *------------------------------------------------------- * GENTRA GROUP 5: Provisions for the GENTRA-Earth run *------------------------------------------------------- * Storage for interphase sources of momentum STORE(MOMX) * Interphase sources of heat and momentum PATCH(GENPAT,CELL,1,NX,1,NY,1,NZ,1,LSTEP) COVAL(GENPAT,U1,FIXFLU,GRND) * Relaxation of interphase sources GLNRLX=1 RELAX(MOMX,LINRLX,GLNRLX) * Activation of GENTRA GROUND-station L(GENSET * ---------------------------------------------------------- * GENTRA GROUP 7: GENTRA test * ---------------------------------------------------------- * GENTRA auto test RG(51)--RG(58) are reserved RG(51)= 9.01E-03;RG(52)= 2.30E+01;RG(53)= 3.92E-04 RG(54)= 1.00E+00;RG(55)= 5.00E-01;RG(56)= 5.00E-01 RG(57)= 7.79E-01;RG(58)= 5.00E-02