public Model CreateModelFromFile()
{
double density = 1.0;
double k = 1.0;
double c = 1.0;
var elementFactory = new ThermalElement3DFactory(new ThermalMaterial(1, density, c, k));
var model = new Model();
model.SubdomainsDictionary[0] = new Subdomain(0);
// Material
char[] delimeters = { ' ', '=', '\t' };
Attributes?name = null;
String[] text = System.IO.File.ReadAllLines(Filename);
for (int i = 0; i < text.Length; i++)
{
String[] line = text[i].Split(delimeters, StringSplitOptions.RemoveEmptyEntries);
StringBuilder comparisonString = new StringBuilder(null, 50);
if (line.Length == 0)
{
continue;
}
if (line[0] == "3" & line.Length > 1)
{
try
{
name = (Attributes)Enum.Parse(typeof(Attributes), line[1]);
}
catch (Exception exception)
{
name = null;
}
}
else
{
for (int linePosition = 0; linePosition < line.Length; linePosition++)
{
if (line[linePosition] == "#")
{
for (int ij = linePosition + 1; ij < line.Length; ij++)
{
comparisonString.Append(line[ij]);
}
try
{
name = (Attributes)Enum.Parse(typeof(Attributes), comparisonString.ToString());
}
catch (Exception exception)
{
name = null;
}
}
}
}
switch (name)
{
case Attributes.sdim:
int NumberOfDimensions = Int32.Parse(line[0]);
break;
case Attributes.numberofmeshpoints:
NumberOfNodes = Int32.Parse(line[0]);
break;
case Attributes.Meshpointcoordinates:
IList <Node> nodelist = new List <Node> {
null
};
for (int j = 0; j < NumberOfNodes; j++)
{
i++;
line = text[i].Split(delimeters);
int nodeGlobalID = j;
double x = Double.Parse(line[2], CultureInfo.InvariantCulture);
double y = Double.Parse(line[1], CultureInfo.InvariantCulture);
double z = Double.Parse(line[0], CultureInfo.InvariantCulture);
Node node = new Node(nodeGlobalID, x, y, z);
model.NodesDictionary.Add(nodeGlobalID, node);
nodelist.Add(node);
}
break;
case Attributes.tri:
do
{
i++;
line = text[i].Split(delimeters);
} while (line[0] == "");
i++;
line = text[i].Split(delimeters);
NumberOfTriElements = Int32.Parse(line[0]);
i++;
IList <Node> nodesCollection = new List <Node>();
for (int TriID = 0; TriID < NumberOfTriElements; TriID++)
{
i++;
line = text[i].Split(delimeters);
for (int j = 0; j < (line.Length - 1); j++)
{
nodesCollection.Add(model.NodesDictionary[Int32.Parse(line[j])]);
}
}
nodesCollection = nodesCollection.Distinct().ToList();
foreach (Node node in nodesCollection)
{
if (node.X <= 5e-4 && node.Y <= 5e-4 && node.Z <= 5e-4)
{
model.NodesDictionary[node.ID].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 10
});
}
else
{
model.Loads.Add(new Load()
{
Node = model.NodesDictionary[node.ID], DOF = ThermalDof.Temperature, Amount = 10
});
}
}
break;
case Attributes.tet:
do
{
i++;
line = text[i].Split(delimeters);
} while (line[0] == "");
i++;
line = text[i].Split(delimeters);
NumberOfElements = Int32.Parse(line[0]);
i++;
for (int TetID = 0; TetID < NumberOfElements; TetID++)
{
i++;
line = text[i].Split(delimeters);
IReadOnlyList <Node> nodes = new List <Node>
{
model.NodesDictionary[Int32.Parse(line[3])],
model.NodesDictionary[Int32.Parse(line[2])],
model.NodesDictionary[Int32.Parse(line[1])],
model.NodesDictionary[Int32.Parse(line[0])]
};
var Tet4 = elementFactory.CreateElement(CellType.Tet4, nodes);
var element = new Element();
element.ID = TetID;
element.ElementType = Tet4;
foreach (Node node in nodes)
{
element.AddNode(node);
}
model.SubdomainsDictionary[0].Elements.Add(element);
model.ElementsDictionary.Add(TetID, element);
}
break;
}
}
return(model);
}
private static Model CreateModel()
{
var model = new Model();
// Subdomains
model.SubdomainsDictionary.Add(0, new Subdomain(subdomainID));
// Material
double density = 1.0;
double k = 1.0;
double c = 1.0;
// Nodes
int numNodes = 27;
var nodes = new Node[numNodes];
nodes[0] = new Node(id: 0, x: 2.0, y: 2.0, z: 2.0);
nodes[1] = new Node(id: 1, x: 2.0, y: 1.0, z: 2.0);
nodes[2] = new Node(id: 2, x: 2.0, y: 0.0, z: 2.0);
nodes[3] = new Node(id: 3, x: 2.0, y: 2.0, z: 1.0);
nodes[4] = new Node(id: 4, x: 2.0, y: 1.0, z: 1.0);
nodes[5] = new Node(id: 5, x: 2.0, y: 0.0, z: 1.0);
nodes[6] = new Node(id: 6, x: 2.0, y: 2.0, z: 0.0);
nodes[7] = new Node(id: 7, x: 2.0, y: 1.0, z: 0.0);
nodes[8] = new Node(id: 8, x: 2.0, y: 0.0, z: 0.0);
nodes[9] = new Node(id: 9, x: 1.0, y: 2.0, z: 2.0);
nodes[10] = new Node(id: 10, x: 1.0, y: 1.0, z: 2.0);
nodes[11] = new Node(id: 11, x: 1.0, y: 0.0, z: 2.0);
nodes[12] = new Node(id: 12, x: 1.0, y: 2.0, z: 1.0);
nodes[13] = new Node(id: 13, x: 1.0, y: 1.0, z: 1.0);
nodes[14] = new Node(id: 14, x: 1.0, y: 0.0, z: 1.0);
nodes[15] = new Node(id: 15, x: 1.0, y: 2.0, z: 0.0);
nodes[16] = new Node(id: 16, x: 1.0, y: 1.0, z: 0.0);
nodes[17] = new Node(id: 17, x: 1.0, y: 0.0, z: 0.0);
nodes[18] = new Node(id: 18, x: 0.0, y: 2.0, z: 2.0);
nodes[19] = new Node(id: 19, x: 0.0, y: 1.0, z: 2.0);
nodes[20] = new Node(id: 20, x: 0.0, y: 0.0, z: 2.0);
nodes[21] = new Node(id: 21, x: 0.0, y: 2.0, z: 1.0);
nodes[22] = new Node(id: 22, x: 0.0, y: 1.0, z: 1.0);
nodes[23] = new Node(id: 23, x: 0.0, y: 0.0, z: 1.0);
nodes[24] = new Node(id: 24, x: 0.0, y: 2.0, z: 0.0);
nodes[25] = new Node(id: 25, x: 0.0, y: 1.0, z: 0.0);
nodes[26] = new Node(id: 26, x: 0.0, y: 0.0, z: 0.0);
for (int i = 0; i < numNodes; ++i)
{
model.NodesDictionary[i] = nodes[i];
}
// Elements
int numElements = 8;
var elementFactory = new ThermalElement3DFactory(new ThermalMaterial(density, c, k));
var elementNodes = new List <Node> [8];
elementNodes[0] = new List <Node>()
{
nodes[13], nodes[4], nodes[3], nodes[12], nodes[10], nodes[1], nodes[0], nodes[9]
};
elementNodes[1] = new List <Node>()
{
nodes[14], nodes[5], nodes[4], nodes[13], nodes[11], nodes[2], nodes[1], nodes[10]
};
elementNodes[2] = new List <Node>()
{
nodes[16], nodes[7], nodes[6], nodes[15], nodes[13], nodes[4], nodes[3], nodes[12]
};
elementNodes[3] = new List <Node>()
{
nodes[17], nodes[8], nodes[7], nodes[16], nodes[14], nodes[5], nodes[4], nodes[13]
};
elementNodes[4] = new List <Node>()
{
nodes[22], nodes[13], nodes[12], nodes[21], nodes[19], nodes[10], nodes[9], nodes[18]
};
elementNodes[5] = new List <Node>()
{
nodes[23], nodes[14], nodes[13], nodes[22], nodes[20], nodes[11], nodes[10], nodes[19]
};
elementNodes[6] = new List <Node>()
{
nodes[25], nodes[16], nodes[15], nodes[24], nodes[22], nodes[13], nodes[12], nodes[21]
};
elementNodes[7] = new List <Node>()
{
nodes[26], nodes[17], nodes[16], nodes[25], nodes[23], nodes[14], nodes[13], nodes[22]
};
var nodeReordering = new GMeshElementLocalNodeOrdering();
var rearrangeNodes = elementNodes.Select(x => nodeReordering.ReorderNodes(x, CellType.Hexa8)).ToArray();;
for (int i = 0; i < numElements; ++i)
{
var elementWrapper = new Element()
{
ID = i, ElementType = elementFactory.CreateElement(CellType.Hexa8, rearrangeNodes[i])
};
foreach (var node in elementNodes[i])
{
elementWrapper.AddNode(node);
}
model.ElementsDictionary[i] = elementWrapper;
model.SubdomainsDictionary[subdomainID].Elements.Add(elementWrapper);
}
// Dirichlet BC
model.NodesDictionary[0].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[1].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[2].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[9].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[10].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[11].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[18].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[19].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
model.NodesDictionary[20].Constraints.Add(new Constraint()
{
DOF = ThermalDof.Temperature, Amount = 100.0
});
// Neumann BC
double q = 100;
model.Loads.Add(new Load()
{
Amount = q, Node = model.NodesDictionary[6], DOF = ThermalDof.Temperature
});
model.Loads.Add(new Load()
{
Amount = q, Node = model.NodesDictionary[24], DOF = ThermalDof.Temperature
});
return(model);
}