using IStation.Epanet.Enums;
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namespace IStation.Epanet.Network.Structures
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{
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///<summary>Hydraulic link structure (pipe)</summary>
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public abstract class Link : Element
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{
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///<summary>Init links flow resistance values.</summary>
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public abstract void InitResistance(HeadLossFormulaType formflag, double hexp);
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public abstract void ConvertUnits(Network nw);
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protected Link(string name) : base(name)
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{
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Vertices = new List<EnPoint>();
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Status = StatusType.XHEAD;
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}
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public override ElementType ElementType => ElementType.LINK;
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///<summary>Link subtype.</summary>
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public abstract LinkType LinkType { get; }
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///<summary>Initial species concentrations.</summary>
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public double C0 { get; set; }
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///<summary>Link diameter (feet).</summary>
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public double Diameter { get; set; }
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///<summary>First node.</summary>
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public Node FirstNode { get; set; }
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///<summary>Flow resistance.</summary>
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public double FlowResistance { get; protected set; }
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///<summary>Bulk react. coeff.</summary>
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public double Kb { get; set; }
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///<summary>Minor loss coeff.</summary>
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public double Km { get; set; }
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///<summary>Wall react. coeff.</summary>
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public double Kw { get; set; }
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///<summary>Link length (feet).</summary>
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public double Lenght { get; set; }
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///<summary>Kinetic parameter values.</summary>
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public double[] Param { get; set; }
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///<summary>Roughness factor.</summary>
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public double Kc { get; set; }
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///<summary>Second node.</summary>
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public Node SecondNode { get; set; }
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///<summary>Link status.</summary>
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public StatusType Status { get; set; }
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///<summary>List of points for link path rendering.</summary>
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public List<EnPoint> Vertices { get; }
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///<summary>Link report flag.</summary>
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public bool RptFlag { get; set; }
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public void SetDiameterAndUpdate(double diameter, Network net)
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{
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double realkm = Km * Math.Pow(Diameter, 4.0) / 0.02517;
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Diameter = diameter;
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Km = 0.02517 * realkm / Math.Pow(diameter, 4);
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InitResistance(net.FormFlag, net.HExp);
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}
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/// <summary>Returns string with length of pipe with given index.</summary>
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public double GetPipeLength(UnitsType type)
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{
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double length = 0;
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EnPoint pt1 = FirstNode.Coordinate;
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foreach (var pt in Vertices)
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{
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length += pt1.DistanceTo(pt);
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pt1 = pt;
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}
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length += pt1.DistanceTo(SecondNode.Coordinate);
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// length = MapDimensions.LengthUCF * length;
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if (type == UnitsType.SI)
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length *= 1 / Constants.MperFT;
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return Lenght = length;
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}
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#if NUCONVERT
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public double GetNuDiameter(UnitsType utype)
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{
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return NUConvert.RevertDiameter(utype, Diameter);
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}
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public double GetNuLength(UnitsType utype)
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{
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return NUConvert.RevertDistance(utype, Lenght);
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}
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public void SetNuDiameter(UnitsType utype, double value)
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{
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Diameter = NUConvert.ConvertDistance(utype, value);
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}
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public void SetNuLenght(UnitsType utype, double value)
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{
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Lenght = NUConvert.ConvertDistance(utype, value);
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}
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public virtual double GetNuRoughness(FlowUnitsType fType, PressUnitsType pType, double spGrav)
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{
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return Kc;
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}
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#endif
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}
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}
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