Environment - simulationEnvironment: startTime=0 stopTime=2400 tolerance=1e-05 numberOfIntervals=2500 stepSize=0.96 Regular simulation: ./Buildings_3.0.0_Buildings.Fluid.HeatExchangers.DXCoils.BaseClasses.Examples.EvaporationFlowReversal -abortSlowSimulation -alarm=480 -lv LOG_STATS LOG_NLS | error | residualFunc33: Iteration variable `der(eva.m)` is inf or nan. LOG_ASSERT | debug | residualFunc33 failed at time=0. | | | | For more information please use -lv LOG_NLS. LOG_STDOUT | warning | While solving non-linear system an assertion failed during initialization. | | | | | The non-linear solver tries to solve the problem that could take some time. | | | | | It could help to provide better start-values for the iteration variables. | | | | | For more information simulate with -lv LOG_NLS_V LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/Fluid/HeatExchangers/DXCoils/BaseClasses/Evaporation.mo:170:3-179:27:writable] | | | | The following assertion has been violated during initialization at time 0.000000 | | | | ((eva.nomVal.gamma <= eva.gammaMax)) --> "*** Warning: In DX coil model, gamma is too large for these coil conditions. | | | | Instead of gamma = 1.5, a value of 0.952861, which | | | | corresponds to a mass transfer effectiveness of 0.8, will be used. | | | | Coil nominal performance data are: | | | | nomVal.m_flow_nominal = 0.497018 | | | | dX_nominal = XEvaOut_nominal-XEvaWetBulOut_nominal = 0.00614376 - 0.00710194 = -0.000958189 | | | | QLat_flow_nominal = -1000 | | | | " LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/Fluid/HeatExchangers/DXCoils/BaseClasses/Evaporation.mo:159:3-164:30:writable] | | | | The following assertion has been violated during initialization at time 0.000000 | | | | ((eva.dX_nominal > 1e-10)) --> "*** Warning: In DX coil model, dX_nominal = -0.000958189 | | | | This means that the coil is not dehumidifying air at the nominal conditions. | | | | Check nominal parameters. | | | | Nominal values: | | | | Q_flow_nominal = -5000 | | | | COP_nominal = 3 | | | | m_flow_nominal = 0.497018 | | | | TEvaIn_nominal = 292.55 (= 19.4 degC) | | | | TConIn_nominal = 308.15 (= 35 degC) | | | | phiIn_nominal = 0.5 | | | | tWet = 1400 | | | | gamma = 1.5 | | | | p_nominal = 101325 | | | | " LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/Fluid/HeatExchangers/DXCoils/BaseClasses/Evaporation.mo:68:3-69:62:writable] | | | | The following assertion has been violated at time 0.000000 | | | | ((eva.mEva_flow <= 0.0)) --> "Variable violating max constraint: eva.mEva_flow <= 0.0, has value: 0.00101848" LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/Fluid/HeatExchangers/DXCoils/BaseClasses/Evaporation.mo:108:3-109:72:writable] | | | | The following assertion has been violated at time 0.000000 | | | | ((eva.dX >= 0.0 and eva.dX <= 1.0)) --> "Variable violating min/max constraint: 0.0 <= eva.dX <= 1.0, has value: -0.00233789" LOG_SUCCESS | info | The initialization finished successfully without homotopy method. LOG_NLS | error | residualFunc53: Iteration variable `der(eva.m)` is inf or nan. LOG_ASSERT | debug | residualFunc53 failed at time=675.656468678998. | | | | For more information please use -lv LOG_NLS. LOG_STDOUT | warning | While solving non-linear system an assertion failed at time 675.656. | | | | | The non-linear solver tries to solve the problem that could take some time. | | | | | It could help to provide better start-values for the iteration variables. | | | | | For more information simulate with -lv LOG_NLS_V LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.00121672s reading init.xml | | | | | | 0.000118302s reading info.xml | | | | | | 6.2056e-05s [ 0.3%] pre-initialization | | | | | | 0.000320121s [ 1.7%] initialization | | | | | | 1.983e-06s [ 0.0%] steps | | | | | | 0.000603929s [ 3.1%] solver (excl. callbacks) | | | | | | 0s [ 0.0%] creating output-file | | | | | | 0.000259392s [ 1.3%] event-handling | | | | | | 0.00143793s [ 7.4%] overhead | | | | | | 0.0166497s [ 86.1%] simulation | | | | | | 0.0193351s [100.0%] total | | | | | events | | | | | | 4 state events | | | | | | 0 time events | | | | | solver: dassl | | | | | | 174 steps taken | | | | | | 234 calls of functionODE | | | | | | 96 evaluations of jacobian | | | | | | 10 error test failures | | | | | | 0 convergence test failures | | | | | | 0.000249902s time of jacobian evaluation LOG_SUCCESS | info | The simulation finished successfully.