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alice_blue

新虫 (初入文坛)

应助: 1 (幼儿园)
金币: 179
帖子: 30
在线: 129小时
虫号: 1611307
注册: 2012-02-11
专业: 信号理论与信号处理

[求助] 求助各位，出现不收敛的问题

在沿着圆柱轴向的一个面施加热，但是出现不收敛的问题，实在不知道是哪里出了问题，大家帮帮忙看一下~
警告提示：
*** WARNING ***                      CP =    770.083 TIME= 21:42:28
The calculated reference HT FLOW CONVERGENCE VALUE= 1.557378551E-14 is
less than the default minimum of 1E-6 (which can be modified using the
MINREF field of the CNVTOL command).  Check results carefully.

程序命令流如下：
FINISH
/CLEAR
/BATCH
/FILNAME,AL-THERMAL,1
/TITLE,THERMAL
R0=0.011 !管道外径
Ri=0.01 !管道内径
D=0.001 !管厚
L=0.003 !管长

/PREP7
ET,1,SOLID70
MPTEMP,1,20,100,200,250,300,350                   !temp table(`c) 6个点
!材料密度
MP,DENS,1,2.8e3                            !density(Kg/m^3) [2800Kg/m^3]
!比热 c = 770.045 + 1.671*t - 0.000152*t^2
MPDATA,c,1,1,0.900e3,0.921e3,1.047e3,1.092e3,1.130e3,1.172e3
!热传导系数
MPDATA,KXX,1,1,0.121e3,0.121e3,0.121e3,0.121e3,0.121e3,0.121e3
TOFFST,273 !参考温度，初始温度

PCIRC,R0,RI,-90,90
VOFFST,1,-L,,
WPROTA,0,0,90
WPROTA,0,88,0
VSBW,1
WPROTA,0,4,0
VSBW,3
WPROTA,0,-92,0
WPROTA,0,0,-90
NUMMRG,KP
NUMCMP,ALL
SAVE

LESIZE,2,,,25 !径向划分
LESIZE,4,,,25
LESIZE,5,,,25
LESIZE,15,,,25
LESIZE,6,,,25
LESIZE,8,,,25
LESIZE,18,,,25
LESIZE,22,,,25

LESIZE,16,,,116  !其他区域网格划分
LESIZE,17,,,116
LESIZE,7,,,116
LESIZE,21,,,116
LESIZE,1,,,116
LESIZE,3,,,116
LESIZE,13,,,116
LESIZE,14,,,116

LESIZE,25,,,6 !施热区的网格划分
LESIZE,26,,,6
LESIZE,27,,,6
LESIZE,28,,,6

MSHAPE,0,3D
LESIZE,23,,,15
VSWEEP,1,1,2
LESIZE,19,,,15
VSWEEP,2,7,8
VSWEEP,3,13,14
ALLSEL,ALL
SAVE
FINISH

/SOLU
ANTYPE,4
NROPT,FULL
NLGEOM,OFF !关闭大变形
LUMPM,0
TIMINT,ON !打开瞬态效应
OUTPR,BASIC,ALL,
OUTRES,ALL,ALL
TINTP,,0.25,0.5,1,0.5,0

toffst,0
TUNIF,30
tref,30

asel,s,area,,15
esla
*DEL,_FNCNAME
*DEL,_FNCMTID
*DEL,_FNCCSYS
*SET,_FNCNAME,'load'
*SET,_FNCCSYS,1
! /INPUT,myload.func,,,1
*DIM,%_FNCNAME%,TABLE,6,35,1,,,,%_FNCCSYS%
!
! Begin of equation: 10^20/5.316*{TIME}*exp(-(0.011*{Y})^2/0.003^2)*exp(-{TIME}
! /10^-9)
*SET,%_FNCNAME%(0,0,1), 0.0, -999
*SET,%_FNCNAME%(2,0,1), 0.0
*SET,%_FNCNAME%(3,0,1), 0.0
*SET,%_FNCNAME%(4,0,1), 0.0
*SET,%_FNCNAME%(5,0,1), 0.0
*SET,%_FNCNAME%(6,0,1), 0.0
*SET,%_FNCNAME%(0,1,1), 1.0, -1, 0, 10, 0, 0, 0
*SET,%_FNCNAME%(0,2,1), 0.0, -2, 0, 20, 0, 0, -1
*SET,%_FNCNAME%(0,3,1), 1, -3, 0, 1, -1, 17, -2
*SET,%_FNCNAME%(0,4,1), 0.0, -1, 0, 5.316, 0, 0, -3
*SET,%_FNCNAME%(0,5,1), 0.0, -2, 0, 1, -3, 4, -1
*SET,%_FNCNAME%(0,6,1), 0.0, -1, 0, 1, -2, 3, 1
*SET,%_FNCNAME%(0,7,1), 0.0, -2, 0, 0, 0, 0, 0
*SET,%_FNCNAME%(0,8,1), 0.0, -3, 0, 1, 0, 0, -2
*SET,%_FNCNAME%(0,9,1), 0.0, -4, 0, 1, -2, 2, -3
*SET,%_FNCNAME%(0,10,1), 0.0, -2, 0, 0.011, 0, 0, 3
*SET,%_FNCNAME%(0,11,1), 0.0, -3, 0, 1, -2, 3, 3
*SET,%_FNCNAME%(0,12,1), 0.0, -2, 0, 2, 0, 0, -3
*SET,%_FNCNAME%(0,13,1), 0.0, -5, 0, 1, -3, 17, -2
*SET,%_FNCNAME%(0,14,1), 0.0, -2, 0, 1, -4, 3, -5
*SET,%_FNCNAME%(0,15,1), 0.0, -3, 0, 0.003, 0, 0, 0
*SET,%_FNCNAME%(0,16,1), 0.0, -4, 0, 2, 0, 0, -3
*SET,%_FNCNAME%(0,17,1), 0.0, -5, 0, 1, -3, 17, -4
*SET,%_FNCNAME%(0,18,1), 0.0, -3, 0, 1, -2, 4, -5
*SET,%_FNCNAME%(0,19,1), 0.0, -2, 7, 1, -3, 0, 0
*SET,%_FNCNAME%(0,20,1), 0.0, -3, 0, 1, -1, 3, -2
*SET,%_FNCNAME%(0,21,1), 0.0, -1, 0, 0, 0, 0, 0
*SET,%_FNCNAME%(0,22,1), 0.0, -2, 0, 1, 0, 0, -1
*SET,%_FNCNAME%(0,23,1), 0.0, -4, 0, 1, -1, 2, -2
*SET,%_FNCNAME%(0,24,1), 0.0, -1, 0, 1, -4, 3, 1
*SET,%_FNCNAME%(0,25,1), 0.0, -2, 0, 0, 0, 0, 0
*SET,%_FNCNAME%(0,26,1), 0.0, -4, 0, 1, 0, 0, -2
*SET,%_FNCNAME%(0,27,1), 0.0, -5, 0, 1, -2, 2, -4
*SET,%_FNCNAME%(0,28,1), 0.0, -2, 0, 9, 0, 0, -5
*SET,%_FNCNAME%(0,29,1), 0.0, -4, 0, 1, -5, 3, -2
*SET,%_FNCNAME%(0,30,1), 0.0, -2, 0, 10, 0, 0, -4
*SET,%_FNCNAME%(0,31,1), 0.0, -5, 0, 1, -2, 17, -4
*SET,%_FNCNAME%(0,32,1), 0.0, -2, 0, 1, -1, 4, -5
*SET,%_FNCNAME%(0,33,1), 0.0, -1, 7, 1, -2, 0, 0
*SET,%_FNCNAME%(0,34,1), 0.0, -2, 0, 1, -3, 3, -1
*SET,%_FNCNAME%(0,35,1), 0.0, 99, 0, 1, -2, 0, 0
! End of equation: 10^20/5.316*{TIME}*exp(-(0.011*{Y})^2/0.003^2)*exp(-{TIME}/
! 10^-9)
!-->

SFE,ALL,1,HFLUX,%LOAD%
ALLSEL,ALL
SBCTRAN
TRNOPT,FULL !设置计算方法
*DO,DELTA,1e-9,10e-9,1e-9 !设置循环计算
TIME,DELTA !设置荷载步时间
AUTOTS,0 !关闭自动时间步长
KBC,0 !设置阶梯荷载步
TSRES,ERASE !Defines an array of keytimes at which the time-stepping strategy changes
OUTRES,ALL,ALL !输出所有项
SOLVE !开始计算
*ENDDO !终止循环计算
FINISH

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