Welcome to the RAS Solution › Forums › HEC-RAS Help › Error Unsteady Flow Simulation

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  • November 17, 2017 at 3:33 pm #6689
    Anonymous
    Guest

    First time in Unsteady flow simulation.
    And result in inconstant flow and unstable stage.

    HELP ME!!!!

    Geometric Preprocessor Version 4.1.0 Jan 2010

    Finished Processing Geometry

    Performing Unsteady Flow Simulation Version 4.1.0 Jan 2010

    Maximum iterations of 20 at: RS WSEL ERROR
    21SEP2008 00:03:00 RP RP 9500 652.88 0.348
    22SEP2008 00:06:00 RP RP 46000 695.24 0.227
    22SEP2008 00:09:00 RP RP 11500 664.26 0.255
    22SEP2008 00:12:00 RP RP 11000 659.00 0.134
    22SEP2008 00:15:00 RP RP 48500 719.09 1.425
    22SEP2008 00:18:00 RP RP 5000 586.16 0.084
    22SEP2008 00:21:00 RP RP 12000 665.64 0.868
    22SEP2008 00:24:00 RP RP 5500 598.05 1.317
    22SEP2008 00:27:00 RP RP 15500 683.85 0.357
    22SEP2008 00:30:00 RP RP 42500 687.10 0.244
    22SEP2008 00:33:00 RP RP 5500 597.67 0.411
    22SEP2008 00:36:00 RP RP 6000 601.09 0.640
    22SEP2008 00:39:00 RP RP 7000 598.72 0.165
    22SEP2008 00:42:00 RP RP 48000 723.21 1.507
    22SEP2008 00:45:00 RP RP 43500 729.40 8.924
    22SEP2008 00:48:00 RP RP 2000 522.31 0.601
    22SEP2008 00:51:00 RP RP 1000 510.52 0.861
    22SEP2008 00:54:00 RP RP 7500 632.52 0.821
    22SEP2008 00:57:00 RP RP 13000 667.10 0.965
    22SEP2008 01:00:00 RP RP 30000 679.61 0.322
    22SEP2008 01:03:00 RP RP 50000 728.41 2.591
    22SEP2008 01:06:00 RP RP 43500 760.61 4.614
    22SEP2008 01:09:00 RP RP 37000 683.09 3.801
    22SEP2008 01:12:00 RP RP 43500 689.23 2.964
    22SEP2008 01:15:00 RP RP 50000 717.24 3.618
    22SEP2008 01:18:00 RP RP 54500 754.49 3.486
    22SEP2008 01:21:00 RP RP 48000 715.24 1.355
    22SEP2008 01:24:00 RP RP 47500 698.37 2.302
    22SEP2008 01:27:00 RP RP 1000 512.10 1.624
    22SEP2008 01:30:00 RP RP 14000 673.04 0.288
    22SEP2008 01:33:00 RP RP 32000 680.14 0.405
    22SEP2008 01:36:00 RP RP 47500 706.59 0.799
    22SEP2008 01:39:00 RP RP 7500 627.65 1.649
    22SEP2008 01:42:00 RP RP 47500 704.07 0.896
    22SEP2008 01:45:00 RP RP 20500 682.37 0.902
    22SEP2008 01:48:00 RP RP 53500 715.76 3.838
    22SEP2008 01:51:00 RP RP 43000 686.58 2.163
    22SEP2008 01:54:00 RP RP 54000 726.19 0.893
    22SEP2008 01:57:00 RP RP 55500 725.62 1.597
    22SEP2008 02:00:00 RP RP 44000 691.08 2.534
    22SEP2008 02:03:00 RP RP 44000 698.07 0.470
    22SEP2008 02:06:00 RP RP 43500 687.83 1.228
    22SEP2008 02:09:00 RP RP 33000 682.76 1.355
    22SEP2008 02:12:00 RP RP 33000 682.05 0.604

    November 18, 2017 at 7:02 am #11020
    cameron
    Participant

    This could be to your time step to high or it could be due to geometry issues like not having ineffective areas set correctly.

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