Seine connector

A seine connector of some kind.

Collaboration diagram for Seine connector:

Author

Karl-Johan Reite

Date

06.03.2009 KJR: Initial version.

Review issues:

0002 — SeineConnector Pos and Vel select from opposite sources for the same Connected flag

0017 — No shipped input file exercises any Seine SimObject

Simulation of a minimum trawl vessel. Used as a base class for other trawl vessels.

Full example file

The example is a copy of the regression input tests/in/SeineOperation/SeineOperation_in.xml, so the two cannot drift apart silently. It covers FISH-0017 item 2 only: Seine/Cable still has no worked instance.

<Contents>
   <OBJECTS>
      <Lib
         LibName                   = "fishery"
         SimObject                 = "Seine/Vessel"
         Name                      = "V"
         Length                    = "70"
         Breadth                   = "14"
         Draught                   = "7"
         NumWarps                  = "2"
         ApSpeed                   = "0.1"
         InitialSpeed              = "2"
         InitialHeading            = "0"
         AttractorNameNet          = "NetBin"
         AttractorNameWarp         = "WarpAttr"
      />
      <Lib
         LibName                   = "fishery"
         SimObject                 = "Seine/Operation"
         Name                      = "Op"
         WarpLength                = "100"
         MinWarpLength             = "60"
         WinchHaulSpeed            = "0.5"
         SetSpeed                  = "4.0"
         InitialSpeed              = "4.0"
         TowSpeed                  = "2.0"
         HaulSpeed                 = "0.5"
         FinishedSpeed             = "0.5"
         SpreadAngle               = "60"
         InitialHeading            = "0"
         TowHeading                = "0"
         AddedTrackLength          = "50"
         TensionFilterConstant     = "0.001"
         AttractorNameNet          = "NetBin"
         AttractorNameWarps        = "WarpAttr"
      />
      <Lib
         LibName                   = "fishery"
         SimObject                 = "Seine/Buoy"
         Name                      = "B"
      />
   </OBJECTS>
 
   <INTERCONNECTIONS>
      <Connection
         B.Pos1             = "10, 0, 0"
         B.Vel1             = "1, 0, 0"
         B.Pos2             = "-10, 0, 0"
         B.Vel2             = "-1, 0, 0"
         B.Connected        = "Op.WarpConnectedVessel"
 
         Op.NetPWingPos     = "-50, -25, -10"
         Op.NetSWingPos     = "-50, 25, -10"
         Op.NetVel          = "1, 0, 0"
         Op.PBridlePos      = "-30, -15, -10"
         Op.SBridlePos      = "-30, 15, -10"
         Op.PBridleTension  = "20000"
         Op.SBridleTension  = "20000"
         Op.VesselPos       = "V.Pos"
 
         V.Heading          = "Op.VesselHeading"
         V.Vel              = "Op.VesselSpeed"
      />
   </INTERCONNECTIONS>
 
   <INITIALIZATION>
      <InitialCondition
         V.Pos     = "0,0"
         V.Heading = "0"
      />
   </INITIALIZATION>
 
   <SIMULATION>
      <Timing TStart="0" TEnd="260"/>
      <Integrator Method="RK45_i" NumCores="1">
        <StepControl StepMax="0.05" StepMin="1e-8" AbsTol="1e-3" RelTol="1e-3"/>
      </Integrator>
   </SIMULATION>
 
   <OBSERVERS>
      <!-- The first output time is 1, not 0: Seine/Operation latches BuoyPos out of
           VesselPos only while it is in Phase_NotSet, and nothing has latched it yet at
           t=0, so the t=0 sample of Op.BuoyPos is uninitialised memory (FISH-0024). -->
      <FileOutput
         TOutput = "1, 5, 9.9, 10.1, 20, 30.8, 30.9, 40, 51.6, 51.8, 60, 72.4, 72.6, 100, 130, 152.4, 152.6, 155:5:200, 210:10:250, 252.4, 252.6, 255, 260"
         Select  = "objects:all"/>
   </OBSERVERS>
</Contents>

This SimObject is referred to as Seine/Buoy