Question

用ANSYS做热分析时模拟结果和实验结果总是差很多，求大神指教！！

在模型上施加激光照射，红色区域为光斑区域。我在光斑区域施加热流，在表面的其他地方施加对流 。很简单的模型，但模拟结果与实验结果总是合不上，差太多啦。
/FILNAME,exercise1,0
!*
/NOPR
/PMETH,OFF,0
KEYW,PR_SET,1
KEYW,PR_STRUC,0
KEYW,PR_THERM,1
KEYW,PR_FLUID,0
KEYW,PR_ELMAG,0
KEYW,MAGNOD,0
KEYW,MAGEDG,0
KEYW,MAGHFE,0
KEYW,MAGELC,0
KEYW,PR_MULTI,0
KEYW,PR_CFD,0
/GO
!*
/COM,
/COM,Preferences for GUI filtering have been set to display:
/COM, Thermal
!*
/PREP7
!*
ET,1,PLANE55
!*
KEYOPT,1,1,0
KEYOPT,1,3,1
KEYOPT,1,4,0
KEYOPT,1,8,0
KEYOPT,1,9,0
!*
!*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,KXX,1,,100
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,C,1,,500
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,500
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,C,1
MPDATA,C,1,,500
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,DENS,1
MPDATA,DENS,1,,525
RECTNG,0,0.0002,0,0.0005,
RECTNG,0.0002,0.0001,0,0.0005,
ADELE, 2, , ,1
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
RECTNG,0.0002,0.001,0,0.0005,
FLST,2,2,5,ORDE,2
FITEM,2,1
FITEM,2,-2
AGLUE,P51X
ESIZE,0.00005,0,
FLST,5,2,5,ORDE,2
FITEM,5,1
FITEM,5,3
CM,_Y,AREA
ASEL, , , ,P51X
CM,_Y1,AREA
CHKMSH,'AREA'
CMSEL,S,_Y
!*
MSHKEY,1
AMESH,_Y1
MSHKEY,0
!*
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
!*
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,0.924021086472,1
/REP,FAST
/DIST,1,1.08222638492,1
/REP,FAST
FINISH
/SOL
TUNIF,40,
FLST,2,1,4,ORDE,1
FITEM,2,3
/GO
!*
SFL,P51X,HFLUX,1.27E8,
FLST,2,1,4,ORDE,1
FITEM,2,10
/GO
!*
SFL,P51X,CONV,20, ,40,
!*
ANTYPE,4
!*
TRNOPT,FULL
LUMPM,0
!*
!*
TIME,0.0002
AUTOTS,1
DELTIM,0.00001, , ,1
KBC,1
!*
TSRES,ERASE
!*
TRNOPT,FULL
THOPT,FULL,0.05,64, , ,
EQSLV, , ,0, ,DELE
PRECISION,0
MSAVE,0
TOFFST,273,
!*
OUTRES,ERASE
OUTRES,ALL,ALL
ALLSEL,ALL
SAVE
/STATUS,SOLU
SOLVE
FINISH
/POST1
!*
/EFACET,1
PLNSOL, TEMP,, 0
模拟结果是240℃，实验结果只有100多℃！！
求大神指教 啊

Answer 1

首先实验时的传热方式在ANSYS模拟中是否都考虑到了？
其次对流传热系数等参数和实验时的参数的吻合性需要保证，是怎么样保证的？
这应该是决定计算结果正确与否的关键所在。

追问

感觉是按照要求弄的啊，还不行，好苦恼！你能不能留个QQ，私下再请教你啊？

追答

我想起来了，15.0的破解方法可能还不太一样，你给私信留个QQ吧

不好意思，发错了，你在私信给我留个QQ吧，正好一块学习一下传热的计算