Himanshu_kpr 
February 19, 2014 09:07 
Quote:
Originally Posted by crst15
(Post 470468)
Hi all,
Code:
Time = 6
DILUPBiCG: Solving for Ux, Initial residual = 0.192382, Final residual = 0.00139781, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.328512, Final residual = 0.00357734, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.281499, Final residual = 0.00392744, No Iterations 1
DILUPBiCG: Solving for T, Initial residual = 0.000289576, Final residual = 6.58994e06, No Iterations 1
DICPCG: Solving for p_rgh, Initial residual = 0.999852, Final residual = 27153.3, No Iterations 1001
time step continuity errors : sum local = 1.90649e+33, global = 4.30234e+27, cumulative = 4.30429e+27
DILUPBiCG: Solving for epsilon, Initial residual = 0.0588009, Final residual = 2.80475e06, No Iterations 1
DILUPBiCG: Solving for k, Initial residual = 0.086828, Final residual = 0.00649997, No Iterations 1
ExecutionTime = 62.06 s ClockTime = 64 s
Time = 7
DILUPBiCG: Solving for Ux, Initial residual = 0.000934178, Final residual = 7.98045e06, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.00368795, Final residual = 5.94455e05, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.00220201, Final residual = 1.0352e05, No Iterations 1
DILUPBiCG: Solving for T, Initial residual = 0.318863, Final residual = 0.0149065, No Iterations 1
DICPCG: Solving for p_rgh, Initial residual = 1, Final residual = 0.0094375, No Iterations 19
time step continuity errors : sum local = 2.49073e+89, global = 3.75377e+88, cumulative = 3.75377e+88
#0 Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam222/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/opt/openfoam222/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#2 Uninterpreted:
#3 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/opt/openfoam222/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#4 Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) in "/opt/openfoam222/platforms/linuxGccDPOpt/lib/libfiniteVolume.so"
#5 Foam::fvMatrix<double>::solve(Foam::dictionary const&) in "/opt/openfoam222/platforms/linuxGccDPOpt/bin/buoyantBoussinesqSimpleFoam"
#6 Foam::fvMatrix<double>::solve() in "/opt/openfoam222/platforms/linuxGccDPOpt/lib/libincompressibleRASModels.so"
#7 Foam::incompressible::RASModels::kEpsilon::correct() in "/opt/openfoam222/platforms/linuxGccDPOpt/lib/libincompressibleRASModels.so"
#8
in "/opt/openfoam222/platforms/linuxGccDPOpt/bin/buoyantBoussinesqSimpleFoam"
#9 __libc_start_main in "/lib/i386linuxgnu/libc.so.6"
#10
in "/opt/openfoam222/platforms/linuxGccDPOpt/bin/buoyantBoussinesqSimpleFoam"
Floating point exception (core dumped)
I have no idea on what is going on. One thing I notice is the very very huge time step continuity errors, and I know that there must be something wrong in my code. However, I have no more idea on how to fix this problem.
Could anybody please help me?? I have attached several files which I think are the main cause of the error.
Kind regards,
Steven

Hi Steven ,
Did you manage to get a solution to your problem of high time step errors, I am also facing the same errors.
Code:
Time = 1
smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.0422091, No Iterations 2
smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 0.030476, No Iterations 2
smoothSolver: Solving for Uz, Initial residual = 1, Final residual = 0.0306028, No Iterations 2
DICPCG: Solving for p, Initial residual = 1, Final residual = 0.134351, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.691177, Final residual = 0.0125443, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.055563, Final residual = 0.00557511, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0220327, Final residual = 0.00114917, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0159711, Final residual = 0.00917452, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0187368, Final residual = 0.00188332, No Iterations 100
time step continuity errors : sum local = 1.54575, global = 0.135485, cumulative = 0.135485
ExecutionTime = 46.8 s ClockTime = 47 s
Time = 2
smoothSolver: Solving for Ux, Initial residual = 0.451668, Final residual = 0.028682, No Iterations 2
smoothSolver: Solving for Uy, Initial residual = 0.751694, Final residual = 0.0484893, No Iterations 2
smoothSolver: Solving for Uz, Initial residual = 0.714429, Final residual = 0.0431807, No Iterations 2
DICPCG: Solving for p, Initial residual = 0.22116, Final residual = 0.00557813, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.249683, Final residual = 0.00707944, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0734626, Final residual = 0.00226722, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.024608, Final residual = 0.00154313, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0104501, Final residual = 0.00039303, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.00496492, Final residual = 0.000300146, No Iterations 100
time step continuity errors : sum local = 0.075618, global = 0.00192783, cumulative = 0.133557
ExecutionTime = 82.56 s ClockTime = 83 s
Time = 3
smoothSolver: Solving for Ux, Initial residual = 0.193993, Final residual = 0.0125072, No Iterations 2
smoothSolver: Solving for Uy, Initial residual = 0.292282, Final residual = 0.0178138, No Iterations 2
smoothSolver: Solving for Uz, Initial residual = 0.248495, Final residual = 0.0144195, No Iterations 2
DICPCG: Solving for p, Initial residual = 0.257503, Final residual = 0.00678077, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.364373, Final residual = 0.00410846, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.072356, Final residual = 0.00315433, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0276443, Final residual = 0.00105369, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0124894, Final residual = 0.000895709, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.00933875, Final residual = 0.000367333, No Iterations 100
time step continuity errors : sum local = 0.121702, global = 0.0140299, cumulative = 0.147587
ExecutionTime = 118.29 s ClockTime = 118 s
Time = 4
smoothSolver: Solving for Ux, Initial residual = 0.12122, Final residual = 0.00895779, No Iterations 2
smoothSolver: Solving for Uy, Initial residual = 0.141129, Final residual = 0.00892482, No Iterations 2
smoothSolver: Solving for Uz, Initial residual = 0.119265, Final residual = 0.00762635, No Iterations 2
DICPCG: Solving for p, Initial residual = 0.256797, Final residual = 0.00561705, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.135723, Final residual = 0.000590494, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.0450871, Final residual = 0.00114046, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.00622627, Final residual = 0.000147822, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.00502869, Final residual = 6.77996e05, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.00374468, Final residual = 3.62683e05, No Iterations 100
time step continuity errors : sum local = 0.210205, global = 0.0591626, cumulative = 0.20675
ExecutionTime = 153.99 s ClockTime = 154 s
Time = 5
smoothSolver: Solving for Ux, Initial residual = 0.269691, Final residual = 0.00476426, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.254113, Final residual = 0.00455208, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.25261, Final residual = 0.00443524, No Iterations 4
DICPCG: Solving for p, Initial residual = 0.0143989, Final residual = 0.000155821, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.000232032, Final residual = 6.96373e07, No Iterations 100
DICPCG: Solving for p, Initial residual = 0.00017752, Final residual = 1.75389e06, No Iterations 100
DICPCG: Solving for p, Initial residual = 7.55826e05, Final residual = 6.34178e07, No Iterations 100
DICPCG: Solving for p, Initial residual = 8.81612e05, Final residual = 8.39305e07, No Iterations 100
DICPCG: Solving for p, Initial residual = 7.70637e05, Final residual = 7.11628e07, No Iterations 100
time step continuity errors : sum local = 2.85601, global = 0.77367, cumulative = 0.980419
ExecutionTime = 190.23 s ClockTime = 190 s
Time = 6
smoothSolver: Solving for Ux, Initial residual = 0.29682, Final residual = 0.00460685, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.293445, Final residual = 0.00429992, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.299224, Final residual = 0.00440848, No Iterations 4
DICPCG: Solving for p, Initial residual = 9.35095e05, Final residual = 1.09954e06, No Iterations 100
DICPCG: Solving for p, Initial residual = 4.91151e06, Final residual = 4.30099e08, No Iterations 100
DICPCG: Solving for p, Initial residual = 8.06364e06, Final residual = 1.08889e07, No Iterations 100
DICPCG: Solving for p, Initial residual = 4.85845e06, Final residual = 6.03338e08, No Iterations 100
DICPCG: Solving for p, Initial residual = 5.74193e06, Final residual = 7.29363e08, No Iterations 100
DICPCG: Solving for p, Initial residual = 5.16892e06, Final residual = 6.34448e08, No Iterations 100
time step continuity errors : sum local = 77.6375, global = 23.7415, cumulative = 24.7219
ExecutionTime = 226.48 s ClockTime = 227 s
Time = 7
smoothSolver: Solving for Ux, Initial residual = 0.318025, Final residual = 0.00485944, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.319293, Final residual = 0.00491225, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.321538, Final residual = 0.0049102, No Iterations 4
DICPCG: Solving for p, Initial residual = 5.87032e06, Final residual = 6.7756e08, No Iterations 100
DICPCG: Solving for p, Initial residual = 2.36787e07, Final residual = 1.64937e09, No Iterations 100
DICPCG: Solving for p, Initial residual = 4.45469e07, Final residual = 4.81168e09, No Iterations 100
DICPCG: Solving for p, Initial residual = 2.28813e07, Final residual = 2.19573e09, No Iterations 100
DICPCG: Solving for p, Initial residual = 2.69278e07, Final residual = 2.80125e09, No Iterations 100
DICPCG: Solving for p, Initial residual = 2.37724e07, Final residual = 2.25178e09, No Iterations 100
time step continuity errors : sum local = 1284.9, global = 278.963, cumulative = 303.685
ExecutionTime = 262.78 s ClockTime = 263 s
Time = 8
smoothSolver: Solving for Ux, Initial residual = 0.311316, Final residual = 0.00514459, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.315939, Final residual = 0.00511636, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.320675, Final residual = 0.00517196, No Iterations 4
DICPCG: Solving for p, Initial residual = 3.33222e07, Final residual = 6.01642e09, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.04966e08, Final residual = 2.08452e10, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.98828e08, Final residual = 5.56181e10, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.1944e08, Final residual = 3.33406e10, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.39477e08, Final residual = 3.59735e10, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.24737e08, Final residual = 2.85011e10, No Iterations 100
time step continuity errors : sum local = 67282.6, global = 12498.2, cumulative = 12801.9
ExecutionTime = 298.53 s ClockTime = 299 s
Time = 9
smoothSolver: Solving for Ux, Initial residual = 0.321623, Final residual = 0.00491377, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.324749, Final residual = 0.00493128, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.328151, Final residual = 0.0049728, No Iterations 4
DICPCG: Solving for p, Initial residual = 1.74395e08, Final residual = 1.91872e10, No Iterations 100
DICPCG: Solving for p, Initial residual = 6.3535e10, Final residual = 5.90779e12, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.16615e09, Final residual = 1.47742e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 5.85987e10, Final residual = 7.23812e12, No Iterations 100
DICPCG: Solving for p, Initial residual = 6.90344e10, Final residual = 1.02724e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 6.25039e10, Final residual = 8.83031e12, No Iterations 100
time step continuity errors : sum local = 953861, global = 176059, cumulative = 188861
ExecutionTime = 335.09 s ClockTime = 336 s
Time = 10
smoothSolver: Solving for Ux, Initial residual = 0.314423, Final residual = 0.00535151, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.319104, Final residual = 0.00540234, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.324228, Final residual = 0.00544633, No Iterations 4
DICPCG: Solving for p, Initial residual = 1.42342e08, Final residual = 2.40163e10, No Iterations 100
DICPCG: Solving for p, Initial residual = 3.85046e10, Final residual = 9.44379e12, No Iterations 100
DICPCG: Solving for p, Initial residual = 7.06354e10, Final residual = 2.04228e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 4.03936e10, Final residual = 1.17704e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 4.79926e10, Final residual = 1.53423e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 4.42188e10, Final residual = 1.16098e11, No Iterations 100
time step continuity errors : sum local = 4.0144e+07, global = 5.41432e+06, cumulative = 5.60318e+06
ExecutionTime = 371.52 s ClockTime = 372 s
Time = 11
smoothSolver: Solving for Ux, Initial residual = 0.317013, Final residual = 0.00480118, No Iterations 4
smoothSolver: Solving for Uy, Initial residual = 0.320907, Final residual = 0.00484383, No Iterations 4
smoothSolver: Solving for Uz, Initial residual = 0.324356, Final residual = 0.00487736, No Iterations 4
DICPCG: Solving for p, Initial residual = 3.42875e08, Final residual = 4.90087e10, No Iterations 100
DICPCG: Solving for p, Initial residual = 9.60001e10, Final residual = 1.46431e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 2.01496e09, Final residual = 5.44019e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.05359e09, Final residual = 1.75239e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.24825e09, Final residual = 2.67017e11, No Iterations 100
DICPCG: Solving for p, Initial residual = 1.14462e09, Final residual = 2.11082e11, No Iterations 100
time step continuity errors : sum local = 6.98003e+08, global = 1.12935e+08, cumulative = 1.18538e+08
ExecutionTime = 407.69 s ClockTime = 408 s
