/// <summary>
/// Calculate the duct pressure drop with the input data.
/// </summary>
/// <param name="data">
/// The input for the pressure drop calculation. The output are also returned through the data to the caller.
/// </param>
public void Calculate(DuctPressureDropData data)
{
ConnectorProfileType eShape = data.Shape;
SystemCalculationLevel eLevel = data.Level;
double dWidthOrDiameter = data.WidthOrDiameter;
double dHeight = data.Height;
double dHydraulicDiameter = 0.0;
double dEquivalentDiameter = 0.0;
double dVelocity = 0.0;
double dVelocityPressure = 0.0;
double dReynoldsNumber = 0.0;
double dPressureDrop = 0.0;
double dFriction = 0.0;
double dCoefficient = 0.0;
dHydraulicDiameter = HydraulicDiameter(eShape, dWidthOrDiameter, dHeight);
dEquivalentDiameter = EquivalentDiameter(eShape, dWidthOrDiameter, dHeight);
if (eLevel != SystemCalculationLevel.None)
{
double dDensity = data.Density;
double dViscosity = data.Viscosity;
dVelocity = Velocity(eShape, dWidthOrDiameter, dHeight, data.Flow);
dVelocityPressure = VelocityPressure(dVelocity, dDensity);
dReynoldsNumber = ReynoldsNumber(dHydraulicDiameter, dVelocity, dViscosity);
if (eLevel == SystemCalculationLevel.All)
{
double dLength = data.Length;
double dFrictionFactor = AltshulTsalFrictionFactor(dHydraulicDiameter, data.Roughness, dReynoldsNumber);
dPressureDrop = PressureDrop(dHydraulicDiameter, dFrictionFactor, dDensity, dVelocity, dLength);
if (!AlmostZero(dLength))
{
dFriction = dPressureDrop / dLength; // Friction is the pressure drop at the unit length.
}
if (!AlmostZero(dVelocityPressure))
{
dCoefficient = dPressureDrop / dVelocityPressure;
}
}
}
data.HydraulicDiameter = dHydraulicDiameter;
data.EquivalentDiameter = dEquivalentDiameter;
data.Velocity = dVelocity;
data.VelocityPressure = dVelocityPressure;
data.ReynoldsNumber = dReynoldsNumber;
data.Friction = dFriction;
data.PressureDrop = dPressureDrop;
data.Coefficient = dCoefficient;
}
/// <summary>
/// Calculate the duct pressure drop with the input data.
/// </summary>
/// <param name="data">
/// The input for the pressure drop calculation. The output are also returned through the data to the caller.
/// </param>
public void Calculate( DuctPressureDropData data )
{
ConnectorProfileType eShape = data.Shape;
SystemCalculationLevel eLevel = data.Level;
double dWidthOrDiameter = data.WidthOrDiameter;
double dHeight = data.Height;
double dHydraulicDiameter = 0.0;
double dEquivalentDiameter = 0.0;
double dVelocity = 0.0;
double dVelocityPressure = 0.0;
double dReynoldsNumber = 0.0;
double dPressureDrop = 0.0;
double dFriction = 0.0;
double dCoefficient = 0.0;
dHydraulicDiameter = HydraulicDiameter( eShape, dWidthOrDiameter, dHeight );
dEquivalentDiameter = EquivalentDiameter( eShape, dWidthOrDiameter, dHeight );
if( eLevel != SystemCalculationLevel.None )
{
double dDensity = data.Density;
double dViscosity = data.Viscosity;
dVelocity = Velocity( eShape, dWidthOrDiameter, dHeight, data.Flow );
dVelocityPressure = VelocityPressure( dVelocity, dDensity );
dReynoldsNumber = ReynoldsNumber( dHydraulicDiameter, dVelocity, dViscosity );
if( eLevel == SystemCalculationLevel.All )
{
double dLength = data.Length;
double dFrictionFactor = AltshulTsalFrictionFactor( dHydraulicDiameter, data.Roughness, dReynoldsNumber );
dPressureDrop = PressureDrop( dHydraulicDiameter, dFrictionFactor, dDensity, dVelocity, dLength );
if( !AlmostZero( dLength ) )
dFriction = dPressureDrop / dLength; // Friction is the pressure drop at the unit length.
if( !AlmostZero( dVelocityPressure ) )
dCoefficient = dPressureDrop / dVelocityPressure;
}
}
data.HydraulicDiameter = dHydraulicDiameter;
data.EquivalentDiameter = dEquivalentDiameter;
data.Velocity = dVelocity;
data.VelocityPressure = dVelocityPressure;
data.ReynoldsNumber = dReynoldsNumber;
data.Friction = dFriction;
data.PressureDrop = dPressureDrop;
data.Coefficient = dCoefficient;
}
