public void Do(WindWaveInput input)
{
_cfd = new List<AdvancedCfd>();
_out = new List<PowerOutput>();
const double k = 0.4; //Von karman konstant
const double pi = 3.14159265359; //pi
double Ufriction = 0; //Friction velocity
double uf; //Temporarily friction velocity
double Zo; //Aerodynamic roughness
double Vhub; //Turbine hub height velocity
double P; //Turbine power output
double Area; //Turbine swept area
double Ug = input.Ug; //Wind speed measured at the reference height
double Zg = input.Zg; //Reference height
double Zhub = input.Zhub; //Turbine hub height
double Td = input.Td; //Turbine diameter
double Ef = input.Ef; //turbine efficiency
double Cw = input.Cw; //wave speed
double residual = 1; Zo = 2E-04;
while (residual > 1E-07)
{
uf = Ug * k / (Math.Log(Zg / Zo));
Zo = 0.012 * Math.Pow(uf, 2) / 9.81;
Ufriction = Ug * k / (Math.Log(Zg / Zo));
residual = uf - Ufriction;
}
Vhub = Ufriction * (Math.Log(Zhub / Zo)) / k;
Area = pi * Math.Pow(Td, 2) / 4;
P = 0.5 * 1.225 * 1.91 * Math.Pow(Vhub, 3) * Ef * Area / 1E+08;
var Ps = new double[5];
var Vhubs = new double[5];
var UfrictionS = new double[5];
var Zos = new[] { 2E-04, 2E-04, 2E-04, 2E-04, 2E-04 };
var A = new[] { 0.02, 0.02, 0.48, 1.89, 1.7 };
var B = new[] { 0.5, 0.7, -1.0, -1.59, -1.7 };
var arC = new string[5];
arC[0] = "Toba ";
arC[1] = "Sugimori ";
arC[2] = "Smith ";
arC[3] = "Johnson ";
arC[4] = "Drennan ";
_cfd.Add(new AdvancedCfd("Charnok", Ufriction, Zo));
for (int n = 0; n < 5; n++)
{
double Error = 1;
while (Error > 1E-07)
{
uf = Ug * k / (Math.Log(Zg / Zos[n]));
Zos[n] = (A[n] * Math.Pow(uf, 2) / 9.81) * Math.Pow(Cw / uf, B[n]);
UfrictionS[n] = Ug * k / (Math.Log(Zg / Zos[n]));
Error = Math.Abs(uf - UfrictionS[n]);
}
Vhubs[n] = UfrictionS[n] * (Math.Log(Zhub / Zos[n])) / k;
Ps[n] = (0.5 * 1.225 * 1.91 * Math.Pow(Vhubs[n], 3) * Ef * Area / 1E+08);
_cfd.Add(new AdvancedCfd(arC[n], UfrictionS[n], Zos[n]));
}
_out.Add(new PowerOutput("Charnok", Vhub, P, 0));
for (int m = 0; m < 5; m++)
{
var d = (Math.Abs(P - Ps[m]) / P) * 100;
_out.Add(new PowerOutput(arC[m], Vhubs[m], Ps[m], d));
}
}
public WindWaveInput CreateProjectModel()
{
var m = new WindWaveInput();
m.Ug = 7;
m.Zg = 20;
m.Zhub = 100;
m.Td = 100;
m.Ef = 35;
m.Cw = 2;
return m;
}
protected void SetDbModel(WindWaveInput model)
{
var serializer = new XmlSerializer(typeof(WindWaveInput));
using (var ctx = new OffwindEntities())
using (var writer = new StringWriter())
{
var dCase = ctx.DCases.First(c => c.Owner == User.Identity.Name && c.Name == StandardCases.WindWave);
serializer.Serialize(writer, model);
dCase.Model = writer.ToString();
writer.Close();
ctx.SaveChanges();
}
}
public void Do(WindWaveInput input)
{
_cfd = new List <AdvancedCfd>();
_out = new List <PowerOutput>();
const double k = 0.4; //Von karman konstant
const double pi = 3.14159265359; //pi
double Ufriction = 0; //Friction velocity
double uf; //Temporarily friction velocity
double Zo; //Aerodynamic roughness
double Vhub; //Turbine hub height velocity
double P; //Turbine power output
double Area; //Turbine swept area
double Ug = input.Ug; //Wind speed measured at the reference height
double Zg = input.Zg; //Reference height
double Zhub = input.Zhub; //Turbine hub height
double Td = input.Td; //Turbine diameter
double Ef = input.Ef; //turbine efficiency
double Cw = input.Cw; //wave speed
double residual = 1; Zo = 2E-04;
while (residual > 1E-07)
{
uf = Ug * k / (Math.Log(Zg / Zo));
Zo = 0.012 * Math.Pow(uf, 2) / 9.81;
Ufriction = Ug * k / (Math.Log(Zg / Zo));
residual = uf - Ufriction;
}
Vhub = Ufriction * (Math.Log(Zhub / Zo)) / k;
Area = pi * Math.Pow(Td, 2) / 4;
P = 0.5 * 1.225 * 1.91 * Math.Pow(Vhub, 3) * Ef * Area / 1E+08;
var Ps = new double[5];
var Vhubs = new double[5];
var UfrictionS = new double[5];
var Zos = new[] { 2E-04, 2E-04, 2E-04, 2E-04, 2E-04 };
var A = new[] { 0.02, 0.02, 0.48, 1.89, 1.7 };
var B = new[] { 0.5, 0.7, -1.0, -1.59, -1.7 };
var arC = new string[5];
arC[0] = "Toba ";
arC[1] = "Sugimori ";
arC[2] = "Smith ";
arC[3] = "Johnson ";
arC[4] = "Drennan ";
_cfd.Add(new AdvancedCfd("Charnok", Ufriction, Zo));
for (int n = 0; n < 5; n++)
{
double Error = 1;
while (Error > 1E-07)
{
uf = Ug * k / (Math.Log(Zg / Zos[n]));
Zos[n] = (A[n] * Math.Pow(uf, 2) / 9.81) * Math.Pow(Cw / uf, B[n]);
UfrictionS[n] = Ug * k / (Math.Log(Zg / Zos[n]));
Error = Math.Abs(uf - UfrictionS[n]);
}
Vhubs[n] = UfrictionS[n] * (Math.Log(Zhub / Zos[n])) / k;
Ps[n] = (0.5 * 1.225 * 1.91 * Math.Pow(Vhubs[n], 3) * Ef * Area / 1E+08);
_cfd.Add(new AdvancedCfd(arC[n], UfrictionS[n], Zos[n]));
}
_out.Add(new PowerOutput("Charnok", Vhub, P, 0));
for (int m = 0; m < 5; m++)
{
var d = (Math.Abs(P - Ps[m]) / P) * 100;
_out.Add(new PowerOutput(arC[m], Vhubs[m], Ps[m], d));
}
}
