Environment - simulationEnvironment: startTime=0 stopTime=2400 tolerance=1e-06 numberOfIntervals=2500 stepSize=0.96 Regular simulation: ./Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.EvaporationFlowReversal -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS LOG_NLS | error | residualFunc36: Iteration variable `der(eva.m)` is inf or nan. 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 master/Fluid/DXSystems/Cooling/BaseClasses/Evaporation.mo:194:3-203:27: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 1.00359, 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 - 0.00715296 = -0.0010092 | | | | QLat_flow_nominal = -1000 | | | | " LOG_SUCCESS | info | The initialization finished successfully without homotopy method. LOG_NLS | error | residualFunc57: Iteration variable `der(eva.m)` is inf or nan. LOG_STDOUT | warning | While solving non-linear system an assertion failed at time 767.529. | | | | | 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 | | | | | | 0.00095775s reading init.xml | | | | | | 0.000118353s reading info.xml | | | | | | 0.000108874s [ 1.2%] pre-initialization | | | | | | 0.000469954s [ 5.4%] initialization | | | | | | 9.02e-07s [ 0.0%] steps | | | | | | 0.000394519s [ 4.5%] solver (excl. callbacks) | | | | | | 0.000322527s [ 3.7%] creating output-file | | | | | | 0.000232562s [ 2.7%] event-handling | | | | | | 0.000736545s [ 8.4%] overhead | | | | | | 0.0064921s [ 74.1%] simulation | | | | | | 0.00875798s [100.0%] total | | | | | events | | | | | | 4 state events | | | | | | 0 time events | | | | | solver: dassl | | | | | | 211 steps taken | | | | | | 320 calls of functionODE | | | | | | 107 evaluations of jacobian | | | | | | 19 error test failures | | | | | | 0 convergence test failures | | | | | | 0.000196468s time of jacobian evaluation LOG_SUCCESS | info | The simulation finished successfully.