mfmohdyasin |
August 27, 2012 03:26 |
Different results between 3 processors simulation and 7 processors simulation
Dear all,
I added the following line in parcel.C file. (after the last line of updateParcelProperties member function)
Info << " d() = " << d() << endl;
Then I run dieselFoam with 3 decompositions and got the following output in log file: Evolving Spray
d() = 1.12798e-05
d() = 1.12798e-05
d() = 1.57086e-05
d() = 1.57086e-05
d() = 1.54595e-05
.....
....
Solving chemistry
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for Ux, Initial residual = 0.00170744, Final residual = 4.95922e-07, No Iterations 5
DILUPBiCG: Solving for Uy, Initial residual = 0.00181109, Final residual = 3.96033e-07, No Iterations 5
DILUPBiCG: Solving for Uz, Initial residual = 0.000120342, Final residual = 1.81973e-07, No Iterations 4
DILUPBiCG: Solving for C7H16, Initial residual = 0.820013, Final residual = 9.75537e-07, No Iterations 8
DILUPBiCG: Solving for O2, Initial residual = 0.000302092, Final residual = 3.62254e-07, No Iterations 3
DILUPBiCG: Solving for CO2, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for H2O, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for h, Initial residual = 0.000105396, Final residual = 4.97253e-07, No Iterations 3
DICPCG: Solving for p, Initial residual = 0.19397, Final residual = 8.81985e-10, No Iterations 58
DICPCG: Solving for p, Initial residual = 9.91074e-10, Final residual = 9.91074e-10, No Iterations 0
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 1.28234e-13, global = -2.93383e-14, cumulative = -2.93383e-14
DICPCG: Solving for p, Initial residual = 0.0156706, Final residual = 9.4495e-10, No Iterations 56
DICPCG: Solving for p, Initial residual = 9.90869e-10, Final residual = 9.90869e-10, No Iterations 0
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 1.2799e-13, global = 3.14686e-14, cumulative = 2.13031e-15
DILUPBiCG: Solving for epsilon, Initial residual = 0.002522, Final residual = 7.4453e-07, No Iterations 4
DILUPBiCG: Solving for k, Initial residual = 0.000132955, Final residual = 6.47361e-07, No Iterations 3
Number of parcels in system.... | 50
Injected liquid mass........... | 27.9464 mg
Liquid Mass in system.......... | 0.00560216 mg
SMD, Dmax...................... | 16.8812 mu, 53.4697 mu
Added gas mass................. | 27.9408 mg
Evaporation Continuity Error... | 4.44956e-06 mg
ExecutionTime = 1.21 s ClockTime = 1 s
However, when I run with 7 decompositions I got the following: Evolving Spray
Solving chemistry
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for Ux, Initial residual = 0.00153395, Final residual = 4.14953e-07, No Iterations 5
DILUPBiCG: Solving for Uy, Initial residual = 0.00163918, Final residual = 3.44191e-07, No Iterations 5
DILUPBiCG: Solving for Uz, Initial residual = 9.21614e-05, Final residual = 6.42257e-07, No Iterations 3
DILUPBiCG: Solving for C7H16, Initial residual = 0.828965, Final residual = 5.45344e-07, No Iterations 10
DILUPBiCG: Solving for O2, Initial residual = 0.000294897, Final residual = 4.85681e-07, No Iterations 3
DILUPBiCG: Solving for CO2, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for H2O, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for h, Initial residual = 9.22275e-05, Final residual = 4.16487e-07, No Iterations 3
DICPCG: Solving for p, Initial residual = 0.184617, Final residual = 7.51892e-10, No Iterations 59
DICPCG: Solving for p, Initial residual = 0.0012862, Final residual = 9.94569e-10, No Iterations 47
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 1.33238e-13, global = -5.25939e-15, cumulative = -5.25939e-15
DICPCG: Solving for p, Initial residual = 0.010484, Final residual = 9.81269e-10, No Iterations 53
DICPCG: Solving for p, Initial residual = 0.000409979, Final residual = 9.88064e-10, No Iterations 44
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 1.32206e-13, global = 2.41525e-14, cumulative = 1.88931e-14
DILUPBiCG: Solving for epsilon, Initial residual = 0.00246708, Final residual = 4.9188e-07, No Iterations 4
bounding epsilon, min: -9.6188 max: 2.27937e+07 average: 31722.1
DILUPBiCG: Solving for k, Initial residual = 8.8404e-05, Final residual = 5.15251e-07, No Iterations 3
Number of parcels in system.... | 59
Injected liquid mass........... | 27.9464 mg
Liquid Mass in system.......... | 0.00657278 mg
SMD, Dmax...................... | 16.638 mu, 53.4697 mu
Added gas mass................. | 27.9408 mg
Evaporation Continuity Error... | 0.000977339 mg
ExecutionTime = 0.79 s ClockTime = 1 s
The lines with "d()" is not shown any more in 7 processors simulation.
Any idea why this happened?
Fairus
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