alice_blue 发表于 2013-5-16 20:45:37

求助:ANSYS仿真遇到收敛问题

如题。
*** WARNING ***                         CP =      60.560   TIME= 09:56:08
The calculated reference HT FLOW CONVERGENCE VALUE= 1.623682755E-11 is
less than the default minimum of 1E-6 (which can be modified using the
MINREF field of the CNVTOL command).Check results carefully.

求助各位这个问题该如何解决?网上查有说是“这个应该属于warning范畴,在你的计算中,并没有热的传导产生,从而无从谈起计算的收敛。你一定是在热的加载过程中出了问题。”
可是不知道该如何解决啊,好几天了还是不知道如何解啊

命令流如下:
FINISH
/CLEAR
/BATCH
/FILNAME,AL-THERMAL,1
/TITLE,THERMAL
R0=0.011        !
Ri=0.01        !
D=0.001        !
L=0.003        !
/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)
!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
VSEL,S,VOLU,,1,3
VATT,1,,1,0,

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

LESIZE,16,,,85!其他区域网格划分
LESIZE,17,,,85
LESIZE,7,,,85
LESIZE,21,,,85
LESIZE,1,,,85
LESIZE,3,,,85
LESIZE,13,,,85
LESIZE,14,,,85

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,0        !关闭大变形
LUMPM,0
timint,on       
OUTPR,BASIC,ALL,
OUTRES,ALL,ALL
TUNIF,30

*DEL,_FNCNAME   
*DEL,_FNCMTID   
*DEL,_FNCCSYS   
*SET,_FNCNAME,'myload'
*SET,_FNCCSYS,1
! /INPUT,myload.func,,,1
*DIM,%_FNCNAME%,TABLE,6,35,1,,,,%_FNCCSYS%
!   
! Begin of equation: 10^11/5.316*{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, 11, 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: 10^11/5.316*{TIME}*exp(-(0.011*{Y})^2/0.003^2)*exp(-{TIME}/
! 10^-9)
!-->

SFA,15,1,HFLUX,%MYLOAD%
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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