Environment - simulationEnvironment: startTime=1.188e+07 stopTime=1.26e+07 tolerance=1e-06 numberOfIntervals=2500 stepSize=288 Regular simulation: ./Buildings_latest_Buildings.Applications.DataCenters.DXCooled.Examples.DXCooledAirsideEconomizer -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS LOG_STDOUT | warning | Internal Numerical Jacobians without coloring are currently not supported by IDA with KLU. Colored numerical Jacobian will be used. LOG_NLS | error | residualFunc1409: Iteration variable `der(varSpeDX.watVapEva.m)` is inf or nan. LOG_ASSERT | debug | residualFunc1409 failed at time=11880000. | | | | 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_NLS | error | residualFunc1409: Iteration variable `varSpeDX.watVapEva.XEvaWetBulOut` is inf or nan. LOG_ASSERT | debug | residualFunc1409 failed at time=11880000. | | | | For more information please use -lv LOG_NLS. LOG_NLS | error | residualFunc1409: Iteration variable `der(varSpeDX.watVapEva.m)` is inf or nan. LOG_ASSERT | debug | residualFunc1409 failed at time=11880000. | | | | For more information please use -lv LOG_NLS. LOG_NLS | error | residualFunc1409: Iteration variable `der(varSpeDX.watVapEva.m)` is inf or nan. LOG_ASSERT | debug | residualFunc1409 failed at time=11880000. | | | | For more information please use -lv LOG_NLS. LOG_NLS | error | residualFunc1409: Iteration variable `der(varSpeDX.watVapEva.m)` is inf or nan. LOG_ASSERT | debug | residualFunc1409 failed at time=11880000. | | | | For more information please use -lv LOG_NLS. LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-master/Fluid/DXSystems/Cooling/BaseClasses/Functions/warnIfPerformanceOutOfBounds.mo:18:3-24:36:writable] | | | | *** Warning: DX coil performance curves at nominal conditions are outside of bounds. | | | | Capacity as a function of temperature is outside of bounds 0.9 to 1.1. | | | | The value of the curve fit is 1.21996 | | | | Check the coefficients of the function sta[1].perCur.capFunT. LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-master/Fluid/DXSystems/Cooling/BaseClasses/Evaporation.mo:185:3-194:27:writable] | | | | The following assertion has been violated during initialization at time 11880000.000000 | | | | ((varSpeDX.watVapEva.nomVal.gamma <= varSpeDX.watVapEva.gammaMax)) --> "*** Warning: In DX coil model, gamma is too large for these coil conditions. | | | | Instead of gamma = 1.5, a value of 0.693093, which | | | | corresponds to a mass transfer effectiveness of 0.8, will be used. | | | | Coil nominal performance data are: | | | | nomVal.m_flow_nominal = 82.8363 | | | | dX_nominal = XEvaOut_nominal-XEvaWetBulOut_nominal = 0.0088221 - 0.00965846 = -0.000836363 | | | | QLat_flow_nominal = -200000 | | | | " LOG_SUCCESS | info | The initialization finished successfully with 3 homotopy steps. LOG_STDOUT | info | ##IDA## -4 error occurred at time = 11880000.0000771 LOG_STDOUT | info | model terminate | Integrator failed. | Simulation terminated at time 1.188e+07 LOG_STATS | info | ### STATISTICS ### | | | | | timer | | | | | | 0.0412296s reading init.xml | | | | | | 0.00479388s reading info.xml | | | | | | 0.00128237s [ 0.6%] pre-initialization | | | | | | 0.0333585s [ 15.9%] initialization | | | | | | 0.174686s [ 83.4%] steps | | | | | | 0.0565479s [ 27.0%] solver (excl. callbacks) | | | | | | 0.000876375s [ 0.4%] creating output-file | | | | | | 2.104e-06s [ 0.0%] event-handling | | | | | | 1.1572e-05s [ 0.0%] overhead | | | | | | -0.0573497s [-27.4%] simulation | | | | | | 0.209415s [100.0%] total | | | | | events | | | | | | 0 state events | | | | | | 0 time events | | | | | solver: ida | | | | | | 509 steps taken | | | | | | 1232 calls of functionODE | | | | | | 723 evaluations of jacobian | | | | | | 240 error test failures | | | | | | 67 convergence test failures | | | | | | 0.156651s time of jacobian evaluation