VOSWMM

DivertHyd

OTTHYMO object VOSWMM object
DivertHyd Junction with a Conduit and one or several Orifices. The Junction is used to model the main structure of DivertHyd. The Orifice is used to model the divided flow of the DivertHyd. Please note that the number of Orifices matches with the number of downstream divided flow objects of DivertHyd. For example, if there are only three downstream divided flow object for the DivertHyd, in VOSWMM there will be only three Orifices for this DivertHyd.

The parameters of VOSWMM Junction are assigned as:

  • NHYD = DuHyd NHYD
  • Name = DuHyd Name
  • Full Depth = 100. Users should check this value and make adjustment if needed.
  • Other parameters keep as default as in VOSWMM.

The parameters of each VOSWMM Orifice are assigned as:

  • NHYD: DivertHyd-NHYD[x]-Q[i], where x is the NHYD of the DivertHyd, i is the ith diverted flow in the DiverHyd flow table.
  • Name: DivertHyd-NHYD[x]-Q[i], where x is the NHYD of the DivertHyd, i is the ith diverted flow in the DiverHyd flow table.
  • Type = Bottom
  • Shape = Circular
  • Height = 10. Users should check this value and make adjustment if needed.
  • Width = 10. Users should check this value and make adjustment if needed.
  • Flap Gate = Yes
  • The flow divided ratio is controlled by a Control Rule associated with a control curve.
    RULE R[k]
    IF NODE [x] INFLOW > 0
    THEN ORIFICE [y] SETTING = CURVE [ControlCurveName]
    where k is the rule number that will be automatically generated from the program, and x is the NHYD of upstream Junction that is used to model the main structure of DivertHyd as described above, y is the NHYD of the Orifice, and ControlCurveName is the control curve name. For the control curve:
    • Curve Name: DivertHyd-NHYD[x]-Q[i], where x is the NHYD of the DivertHyd, i is the ith diverted flow in the DiverHyd flow table.
    • Control Curve Table (please note: i is the ith diverted flow in the DiverHyd flow table.)
      Controller Value Control Setting
      0 0
      Qtotal at 1st row in DivertHyd flow table QID[i] / (Qtotal at 1st row in DivertHyd flow table)
      … …
      Qtotal at nth row in DivertHyd flow table QID[i] / (Qtotal at nth row in DivertHyd flow table)