The example "HeatExchangerSimulation" in Fluid Library doesn't work properly.

[anonymous]

I have the latest version of openmodelica: OpenModelica 1.9.0 beta4+dev (r17414). When I simulate that project, there is an error: "Scripting: Failed to open simulation results...." Output log info is:
stdout | warning | | While solving non-linear system an assert was called.
| | | | | 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

LOG_NLS | warning | nonlinear system fails: Nonlinear function (residualFunc1510, size 160) at t=0
| | | | | proper start-values for some of the following iteration variables might help
| | | | | | [1] Real HEX._pipe_1._mediums[1]._p(start=?, nominal=?)
| | | | | | [2] Real HEX._pipe_2._mediums[19]._T(start=?, nominal=?)
| | | | | | [3] Real HEX._pipe_2._mediums[18]._T(start=?, nominal=?)
| | | | | | [4] Real HEX._wall._Ta[4](start=?, nominal=?)
| | | | | | [5] Real HEX._wall._T[4](start=?, nominal=?)
| | | | | | [6] Real HEX._wall._Ta[3](start=?, nominal=?)
| | | | | | [7] Real HEX._wall._T[3](start=?, nominal=?)
| | | | | | [8] Real HEX._pipe_1._mediums[2]._T(start=?, nominal=?)
| | | | | | [9] Real HEX._pipe_1._mediums[3]._p(start=?, nominal=?)
| | | | | | [10] Real HEX._pipe_1._mediums[5]._T(start=?, nominal=?)
| | | | | | [11] Real HEX._pipe_1._mediums[4]._p(start=?, nominal=?)
| | | | | | [12] Real HEX._pipe_1._heatTransfer._alphas[3](start=?, nominal=?)
| | | | | | [13] Real HEX._pipe_1._mediums[3]._T(start=?, nominal=?)
| | | | | | [14] Real HEX._wall._Tb[3](start=?, nominal=?)
| | | | | | [15] Real HEX._pipe_1._mediums[4]._T(start=?, nominal=?)
| | | | | | [16] Real HEX._pipe_1._heatTransfer._alphas[4](start=?, nominal=?)
| | | | | | [17] Real HEX._wall._Tb[4](start=?, nominal=?)
| | | | | | [18] Real HEX._wall._Ta[5](start=?, nominal=?)
| | | | | | [19] Real HEX._wall._T[5](start=?, nominal=?)
| | | | | | [20] Real HEX._wall._Tb[5](start=?, nominal=?)
| | | | | | [21] Real HEX._pipe_1._heatTransfer._alphas[5](start=?, nominal=?)
| | | | | | [22] Real HEX._pipe_1._mediums[5]._p(start=?, nominal=?)
| | | | | | [23] Real HEX._pipe_2._mediums[13]._p(start=?, nominal=?)
| | | | | | [24] Real HEX._pipe_1._mediums[7]._p(start=?, nominal=?)
| | | | | | [25] Real HEX._wall._Tb[7](start=?, nominal=?)
| | | | | | [26] Real HEX._pipe_1._heatTransfer._alphas[7](start=?, nominal=?)
| | | | | | [27] Real HEX._pipe_2._mediums[5]._p(start=?, nominal=?)
| | | | | | [28] Real HEX._pipe_2._mediums[6]._p(start=?, nominal=?)
| | | | | | [29] Real HEX._wall._Ta[18](start=?, nominal=?)
| | | | | | [30] Real HEX._wall._T[18](start=?, nominal=?)
| | | | | | [31] Real HEX._wall._Ta[16](start=?, nominal=?)
| | | | | | [32] Real HEX._wall._T[16](start=?, nominal=?)
| | | | | | [33] Real HEX._wall._Ta[14](start=?, nominal=?)
| | | | | | [34] Real HEX._wall._T[14](start=?, nominal=?)
| | | | | | [35] Real HEX._wall._Ta[13](start=?, nominal=?)
| | | | | | [36] Real HEX._wall._T[13](start=?, nominal=?)
| | | | | | [37] Real HEX._pipe_1._mediums[12]._p(start=?, nominal=?)
| | | | | | [38] Real HEX._pipe_1._mediums[13]._T(start=?, nominal=?)
| | | | | | [39] Real HEX._pipe_1._mediums[16]._p(start=?, nominal=?)
| | | | | | [40] Real HEX._pipe_1._mediums[15]._p(start=?, nominal=?)
| | | | | | [41] Real HEX._pipe_1._mediums[14]._p(start=?, nominal=?)
| | | | | | [42] Real HEX._pipe_1._mediums[13]._p(start=?, nominal=?)
| | | | | | [43] Real HEX._pipe_1._heatTransfer._alphas[13](start=?, nominal=?)
| | | | | | [44] Real HEX._wall._Tb[13](start=?, nominal=?)
| | | | | | [45] Real HEX._pipe_1._mediums[14]._T(start=?, nominal=?)
| | | | | | [46] Real HEX._pipe_1._heatTransfer._alphas[14](start=?, nominal=?)
| | | | | | [47] Real HEX._wall._Tb[14](start=?, nominal=?)
| | | | | | [48] Real HEX._wall._Ta[15](start=?, nominal=?)
| | | | | | [49] Real HEX._wall._T[15](start=?, nominal=?)
| | | | | | [50] Real HEX._wall._Tb[15](start=?, nominal=?)
| | | | | | [51] Real HEX._pipe_1._heatTransfer._alphas[15](start=?, nominal=?)
| | | | | | [52] Real HEX._pipe_1._mediums[15]._T(start=?, nominal=?)
| | | | | | [53] Real HEX._pipe_1._mediums[16]._T(start=?, nominal=?)
| | | | | | [54] Real HEX._pipe_1._heatTransfer._alphas[16](start=?, nominal=?)
| | | | | | [55] Real HEX._wall._Tb[16](start=?, nominal=?)
| | | | | | [56] Real HEX._pipe_1._mediums[17]._p(start=?, nominal=?)
| | | | | | [57] Real HEX._pipe_1._mediums[18]._p(start=?, nominal=?)
| | | | | | [58] Real HEX._pipe_1._mediums[19]._T(start=?, nominal=?)
| | | | | | [59] Real HEX._pipe_1._mediums[20]._T(start=?, nominal=?)
| | | | | | [60] Real HEX._pipe_2._mediums[1]._p(start=?, nominal=?)
| | | | | | [61] Real HEX._pipe_2._mediums[2]._p(start=?, nominal=?)
| | | | | | [62] Real HEX._pipe_2._mediums[1]._T(start=?, nominal=?)
| | | | | | [63] Real HEX._wall._Ta[20](start=?, nominal=?)
| | | | | | [64] Real HEX._wall._T[20](start=?, nominal=?)
| | | | | | [65] Real HEX._wall._Tb[20](start=?, nominal=?)
| | | | | | [66] Real HEX._pipe_1._heatTransfer._alphas[20](start=?, nominal=?)
| | | | | | [67] Real HEX._pipe_1._mediums[20]._p(start=?, nominal=?)
| | | | | | [68] Real HEX._wall._Ta[19](start=?, nominal=?)
| | | | | | [69] Real HEX._wall._T[19](start=?, nominal=?)
| | | | | | [70] Real HEX._wall._Tb[19](start=?, nominal=?)
| | | | | | [71] Real HEX._pipe_1._heatTransfer._alphas[19](start=?, nominal=?)
| | | | | | [72] Real HEX._pipe_1._mediums[19]._p(start=?, nominal=?)
| | | | | | [73] Real HEX._pipe_1._mediums[18]._T(start=?, nominal=?)
| | | | | | [74] Real HEX._pipe_1._heatTransfer._alphas[18](start=?, nominal=?)
| | | | | | [75] Real HEX._wall._Tb[18](start=?, nominal=?)
| | | | | | [76] Real HEX._pipe_1._heatTransfer._alphas[17](start=?, nominal=?)
| | | | | | [77] Real HEX._pipe_1._mediums[17]._T(start=?, nominal=?)
| | | | | | [78] Real HEX._wall._Tb[17](start=?, nominal=?)
| | | | | | [79] Real HEX._wall._T[17](start=?, nominal=?)
| | | | | | [80] Real HEX._wall._Ta[17](start=?, nominal=?)
| | | | | | [81] Real HEX._pipe_2._mediums[4]._T(start=?, nominal=?)
| | | | | | [82] Real HEX._pipe_2._mediums[3]._T(start=?, nominal=?)
| | | | | | [83] Real HEX._pipe_2._mediums[2]._T(start=?, nominal=?)
| | | | | | [84] Real HEX._pipe_2._mediums[3]._p(start=?, nominal=?)
| | | | | | [85] Real HEX._pipe_2._mediums[4]._p(start=?, nominal=?)
| | | | | | [86] Real HEX._pipe_2._mediums[5]._T(start=?, nominal=?)
| | | | | | [87] Real HEX._pipe_2._mediums[6]._T(start=?, nominal=?)
| | | | | | [88] Real HEX._pipe_2._mediums[7]._p(start=?, nominal=?)
| | | | | | [89] Real HEX._pipe_2._mediums[7]._T(start=?, nominal=?)
| | | | | | [90] Real HEX._pipe_2._mediums[8]._p(start=?, nominal=?)
| | | | | | [91] Real HEX._pipe_2._mediums[10]._p(start=?, nominal=?)
| | | | | | [92] Real HEX._pipe_2._mediums[9]._T(start=?, nominal=?)
| | | | | | [93] Real HEX._pipe_2._mediums[8]._T(start=?, nominal=?)
| | | | | | [94] Real HEX._pipe_2._mediums[9]._p(start=?, nominal=?)
| | | | | | [95] Real HEX._wall._Ta[12](start=?, nominal=?)
| | | | | | [96] Real HEX._wall._T[12](start=?, nominal=?)
| | | | | | [97] Real HEX._wall._Tb[12](start=?, nominal=?)
| | | | | | [98] Real HEX._pipe_1._mediums[12]._T(start=?, nominal=?)
| | | | | | [99] Real HEX._pipe_1._heatTransfer._alphas[12](start=?, nominal=?)
| | | | | | [100] Real HEX._pipe_1._mediums[11]._p(start=?, nominal=?)
| | | | | | [101] Real HEX._wall._Ta[11](start=?, nominal=?)
| | | | | | [102] Real HEX._wall._T[11](start=?, nominal=?)
| | | | | | [103] Real HEX._wall._Tb[11](start=?, nominal=?)
| | | | | | [104] Real HEX._pipe_1._heatTransfer._alphas[11](start=?, nominal=?)
| | | | | | [105] Real HEX._pipe_1._mediums[9]._T(start=?, nominal=?)
| | | | | | [106] Real HEX._pipe_1._mediums[10]._T(start=?, nominal=?)
| | | | | | [107] Real HEX._pipe_1._heatTransfer._alphas[10](start=?, nominal=?)
| | | | | | [108] Real HEX._pipe_1._mediums[10]._p(start=?, nominal=?)
| | | | | | [109] Real HEX._pipe_1._mediums[11]._T(start=?, nominal=?)
| | | | | | [110] Real HEX._wall._Tb[10](start=?, nominal=?)
| | | | | | [111] Real HEX._wall._T[10](start=?, nominal=?)
| | | | | | [112] Real HEX._wall._Ta[10](start=?, nominal=?)
| | | | | | [113] Real HEX._pipe_2._mediums[12]._T(start=?, nominal=?)
| | | | | | [114] Real HEX._pipe_2._mediums[11]._T(start=?, nominal=?)
| | | | | | [115] Real HEX._pipe_2._mediums[10]._T(start=?, nominal=?)
| | | | | | [116] Real HEX._pipe_2._mediums[11]._p(start=?, nominal=?)
| | | | | | [117] Real HEX._pipe_2._mediums[12]._p(start=?, nominal=?)
| | | | | | [118] Real HEX._wall._Ta[9](start=?, nominal=?)
| | | | | | [119] Real HEX._wall._T[9](start=?, nominal=?)
| | | | | | [120] Real HEX._wall._Tb[9](start=?, nominal=?)
| | | | | | [121] Real HEX._pipe_1._heatTransfer._alphas[9](start=?, nominal=?)
| | | | | | [122] Real HEX._pipe_1._mediums[9]._p(start=?, nominal=?)
| | | | | | [123] Real HEX._pipe_1._heatTransfer._alphas[8](start=?, nominal=?)
| | | | | | [124] Real HEX._pipe_1._mediums[8]._T(start=?, nominal=?)
| | | | | | [125] Real HEX._pipe_1._mediums[8]._p(start=?, nominal=?)
| | | | | | [126] Real HEX._wall._Tb[8](start=?, nominal=?)
| | | | | | [127] Real HEX._wall._T[8](start=?, nominal=?)
| | | | | | [128] Real HEX._wall._Ta[8](start=?, nominal=?)
| | | | | | [129] Real HEX._pipe_2._mediums[13]._T(start=?, nominal=?)
| | | | | | [130] Real HEX._pipe_2._mediums[16]._p(start=?, nominal=?)
| | | | | | [131] Real HEX._wall._Ta[6](start=?, nominal=?)
| | | | | | [132] Real HEX._pipe_2._mediums[15]._T(start=?, nominal=?)
| | | | | | [133] Real HEX._pipe_2._mediums[15]._p(start=?, nominal=?)
| | | | | | [134] Real HEX._pipe_2._mediums[14]._p(start=?, nominal=?)
| | | | | | [135] Real HEX._pipe_2._mediums[14]._T(start=?, nominal=?)
| | | | | | [136] Real HEX._wall._Ta[7](start=?, nominal=?)
| | | | | | [137] Real HEX._wall._T[7](start=?, nominal=?)
| | | | | | [138] Real HEX._pipe_1._mediums[7]._T(start=?, nominal=?)
| | | | | | [139] Real HEX._pipe_1._heatTransfer._alphas[6](start=?, nominal=?)
| | | | | | [140] Real HEX._pipe_1._mediums[6]._p(start=?, nominal=?)
| | | | | | [141] Real HEX._pipe_1._mediums[6]._T(start=?, nominal=?)
| | | | | | [142] Real HEX._wall._Tb[6](start=?, nominal=?)
| | | | | | [143] Real HEX._wall._T[6](start=?, nominal=?)
| | | | | | [144] Real HEX._pipe_2._mediums[16]._T(start=?, nominal=?)
| | | | | | [145] Real HEX._pipe_2._mediums[17]._p(start=?, nominal=?)
| | | | | | [146] Real HEX._pipe_2._mediums[17]._T(start=?, nominal=?)
| | | | | | [147] Real HEX._pipe_2._mediums[18]._p(start=?, nominal=?)
| | | | | | [148] Real HEX._wall._Ta[1](start=?, nominal=?)
| | | | | | [149] Real HEX._pipe_2._mediums[20]._T(start=?, nominal=?)
| | | | | | [150] Real HEX._pipe_2._mediums[20]._p(start=?, nominal=?)
| | | | | | [151] Real HEX._pipe_2._mediums[19]._p(start=?, nominal=?)
| | | | | | [152] Real HEX._wall._Ta[2](start=?, nominal=?)
| | | | | | [153] Real HEX._wall._T[2](start=?, nominal=?)
| | | | | | [154] Real HEX._wall._Tb[2](start=?, nominal=?)
| | | | | | [155] Real HEX._pipe_1._heatTransfer._alphas[2](start=?, nominal=?)
| | | | | | [156] Real HEX._pipe_1._mediums[2]._p(start=?, nominal=?)
| | | | | | [157] Real HEX._pipe_1._heatTransfer._alphas[1](start=?, nominal=?)
| | | | | | [158] Real HEX._pipe_1._mediums[1]._T(start=?, nominal=?)
| | | | | | [159] Real HEX._wall._Tb[1](start=?, nominal=?)
| | | | | | [160] Real HEX._wall._T[1](start=?, nominal=?)

stdout | warning | Error in initialization. Storing results and exiting.
| | | | Use -lv=LOG_INIT -w for more information.

Process crashed

[Adrian Pop]

These are known issues. Check the library coverage here:
​https://test.openmodelica.org/~marsj/MSL32/BuildModelRecursive.html
We're working on solving them but it will take a while.

[Martin Sjölund]

Postponed until 1.9.1

[Lennart Ochel]

The non-linear system should probably be proper handled from the non-linear solver. The fallback heuristics seem to be weird somehow - even if they work in some cases ;-).

[Martin Sjölund]

This ticket was not closed for 1.9.1, which has now been released. It was batch modified for milestone 1.9.2 (but maybe an empty milestone was more appropriate; feel free to change it).

[Christoph <buchner@…>]

Just tried this using r25105, can confirm that this still happens.

[Christoph <buchner@…>]

btw, what is the release policy of OM? There are a number of blocking bugs still open for 1.9.2, but a release was tagged recently?

[Adrian Pop]

We're trying to get rid of as many critical or blocker bugs as possible but we also have to think about releasing sometime. It was decided to release now and continue working on the blocker bugs for the next releases.

[Martin Sjölund]

Milestone changed to 1.9.3 since 1.9.2 was released.

[Martin Sjölund]

Moved to new milestone 1.9.4

[Lennart Ochel]

This is the error message from the latest coverage test:

[/var/lib/hudson/jobs/OpenModelica_TEST_ALL_LIBRARIES/workspace/OpenModelica/build/lib/omlibrary/Modelica 3.1/Fluid/Examples/HeatExchanger.mo:190:7-195:111:writable] Error: Type mismatch for positional argument 3 in Modelica.Fluid.Examples.HeatExchanger.BaseClasses.BasicHX$HEX.Medium_1.specificEnthalpy_pTX(X={}). The argument has type: Real[0] expected type: Real[1]
Error: Error occurred while flattening model Modelica.Fluid.Examples.HeatExchanger.HeatExchangerSimulation 

[Adrian Pop]

MSL 3.1 is wrong. The model works in MSL 3.2.1 and above.

[Martin Sjölund]

Milestone renamed

[Martin Sjölund]

Milestone renamed