流体温度场瞬态分析出现低于环境温度的情况(命令流+图)
两边是固体，中间是流体，环境温度25°，瞬态求解出现温度低于环境温度的情况！大家帮忙看看哪里出错了，谢谢！FINISH
/CLEAR
/FILNAME,GISHEAT
/TITLE,PHYSICAL EXPERIMENT
/UNITS,SI
/PREP7
TOFFST,273
R0=0.03
LEN0=0.3
LEN1=0.2
V=136.8 !电压
T0=12 !环境温度
Q=3E6 !发热陶瓷生热率
ET,1,FLUID141
MP,KXX,2,50.2!外壳的导热系数
MP,DENS,2,7850!外壳密度
MP,C,2,460!外壳比热
MP,KXX,3,500!外壳的导热系数
MP,C,3,400
MP,DENS,3,2700
RECTNG,0,R0,0,LEN0
RECTNG,R0,R0+LEN1,0,LEN0
RECTNG,R0+LEN1,R0+LEN1+R0,0,LEN0
AGLUE,ALL
NUMCMP,AREAS
NUMCMP,LINES
ALLSEL,ALL
ASEL,S,,,1
AATT,2,,1
ALLSEL,ALL
ASEL,S,,,3
AATT,3,,1
ASEL,S,,,2
AATT,1,,1
ALLSEL,ALL
LSEL,S,,,1,3,2
LESIZE,ALL,,,10,-5
ALLSEL,ALL
LSEL,S,,,7,8
LESIZE,ALL,,,30,-5
ALLSEL,ALL
LSEL,S,,,9,10
LESIZE,ALL,,,10,-5
ALLSEL,ALL
LSEL,S,,,2,4,2
LSEL,A,,,5,6
LESIZE,ALL,,,60
ALLSEL,ALL
MSHKEY,2
MSHAPE,0,2D
AMESH,ALL
FINISH
/SOLU
ALLSEL,ALL
ASEL,S,,,1
ESLA,S
BFE,ALL,HGEN,,Q
ALLSEL,ALL
ASEL,S,,,2
ESLA,S
NSEL,S,EXT
D,ALL,,,,,,VX,VY
ALLSEL,ALL
LSEL,S,,,6
NSLL,S,1
SF,ALL,CONV,3.59,T0 !对流换热
SF,ALL,RAD,0.85,T0 !对环境辐射
ALLSEL,ALL
LSEL,S,,,2,5,3
SFL,ALL,RDSF,0.85,,-1
/PSF,RAD,EMIS,1,1
/PSF,RAD,TAMP,1,1
/PSF,RDSF,EMSS,1,1
/PSF,RDSF,ENCL,1,1
ALLSEL,ALL
STEF,5.67E-8
RADOPT,0.5,0.0001
SPCTEMP,1,T0
HEMIOPT,10
TOFFST,273
ALLSEL,ALL
FLDATA1,SOLU,TRAN,1!瞬态分析
FLDATA1,SOLU,FLOW,1
FLDATA1,SOLU,TEMP,1!设置求解温度场
FLDATA1,SOLU,TURB,1!设置求解湍流
FLDATA4,TIME,STEP,5
FLDATA4,TIME,NUMB,60
FLDATA4,TIME,TEND,300
FLDATA4,TIME,GLOB,50
FLDATA4,TIME,OVER,50
FLDATA4,TIME,APPE,50
FLDATA4,TIME,SUMF,50
FLDATA4,TIME,BC,1
!FLDATA4,TIME,METH,NEWM
FLDATA12,PROP,DENS,4
FLDATA13,VARY,DENS,1!密度可变
FLDATA12,PROP,VISC,4
FLDATA13,VARY,VISC,1
FLDATA12,PROP,COND,4
FLDATA13,VARY,COND,1
FLDATA12,PROP,SPHT,4
FLDATA13,VARY,SPHT,0
FLDATA7,PROT,DENS,AIR-SI !密度
FLDATA8,NOMI,DENS,-1
FLDATA9,COF1,DENS,0
FLDATA10,COF2,DENS,0
FLDATA11,COF3,DENS,0
FLDATA7,PROT,VISC,AIR-SI !粘性
FLDATA8,NOMI,VISC,-1
FLDATA9,COF1,VISC,0
FLDATA10,COF2,VISC,0
FLDATA11,COF3,VISC,0
FLDATA7,PROT,COND,AIR-SI !导热系数
FLDATA8,NOMI,COND,-1
FLDATA9,COF1,COND,0
FLDATA10,COF2,COND,0
FLDATA11,COF3,COND,0
FLDATA7,PROT,SPHT,AIR-SI !比热
FLDATA8,NOMI,SPHT,-1
FLDATA9,COF1,SPHT,0
FLDATA10,COF2,SPHT,0
FLDATA11,COF3,SPHT,0
ACEL,0,9.8,0 !Y方向重力加速度
FLDATA15,PRES,REFE,101350
FLDATA16,BULK,BETA,1E15
FLDATA17,GAMM,COMP,1.4
FLDATA14,TEMP,NOMI,T0!初始化属性时的温度
FLDATA14,TEMP,BULK,T0
FLDATA18,METH,PRES,3!指定求解器
FLDATA18,METH,TEMP,6
ALLSEL,ALL
SOLVE
FINISH
/POST1
SET,LAST
PLNSOL,TEMP
FINISH 你的流体与固体内壁的边界条件是怎么考虑的？ 加载无滑移边界条件啊，速度都为0！ 没有人解答吗？继续等待！
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