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某多级co2压缩机的最后一级,流道狭长,Pin=100bar,Tin=360k,采有BL模型、3重网格计算。
当initial solution为for turbomachinery是,计算几步就出错了
查看.std文件,
APPLY BOUNDARY CONDITIONS
ITER GL RMS_RES. MAX_RES. DOM I J K MF_IN MF_OUT FORCE TORQUE
1 1 0.0000 3.9036 1 32 44 21 5.0556E+01 1.0908E+01 0.0000E+00 0.0000E+00
1 3 -0.5484 2.0207 1 8 11 7 6.6857E+01 1.1039E+02 0.0000E+00 0.0000E+00
2 3
run-time error M6104: MATH
- floating-point error: overflow
0E+00 0.0000E+00
3 3 -0.2186 2.3403 1 1 11 20 7.2107E+01 1.4062E+02 0.0000E+00 0.0000E+00
4 3 -0.3661 2.2692 1 1 11 21 7.5523E+01 1.5734E+02 0.0000E+00 0.0000E+00
5 3 -0.3467 2.2169 1 1 10 21 7.8820E+01 1.7547E+02 0.0000E+00 0.0000E+00
6 3 -0.3724 2.2372 1 1 8 21 8.1787E+01 1.9551E+02 0.0000E+00 0.0000E+00
DENSITY NEGATIVE IN DOMAIN 1
PRESSURE NEGATIVE IN DOMAIN 1
7 3 -0.4255 2.1719 1 1 8 21 8.4345E+01 2.1867E+02 0.0000E+00 0.0000E+00
DENSITY NEGATIVE IN DOMAIN 1
DENSITY NEGATIVE IN DOMAIN 1
PRESSURE NEGATIVE IN DOMAIN 1
DENSITY NEGATIVE IN DOMAIN 1
PRESSURE NEGATIVE IN DOMAIN 1
DENSITY NEGATIVE IN DOMAIN 1
PRESSURE NEGATIVE IN DOMAIN 1
initial solution改为constant values时也不行:
ITER GL RMS_RES. MAX_RES. DOM I J K MF_IN MF_OUT FORCE TORQUE
1 1 0.0000 3.6243 1 1 44 82 1.0165E+01 8.0053E-02 0.0000E+00 0.0000E+00
1 3 -0.9707 1.4627 1 8 1 20 1.2739E+01 -4.7584E-01 0.0000E+00 0.0000E+00
2 3 -0.9248 1.6609 1 8 1 14 1.4690E+01 -7.7366E-01 0.0000E+00 0.0000E+00
PRESSURE NEGATIVE IN DOMAIN 1
DENSITY NEGATIVE IN DOMAIN 1
PR
run-time error M6104: MATH
- floating-point error: overflow
1
PRESSURE NEGATIVE IN DOMAIN 1
DENSITY NEGATIVE IN DOMAIN 1
PRESSURE NEGATIVE IN DOMAIN 1
请问
run-time error M6104: MATH
- floating-point error: overflow
这错误是怎么回事,如何解决,谢谢 |
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