Splitting the Manikin into Segments
A key step in the modeling process is to split the manikin surface geometry into the specific number of part surfaces required by the Fiala Thermoregulation model or the Equivalent Homogeneous Temperature model.

- Fiala Manikin
- For the Fiala models, body
parts such as Head, Neck,
Thorax, and so on, are called segments. The
manikin body is divided into 20 such segments. These segments are further
sub-divided into a varying number of sectors for each segment, for example,
Head_Top or Head_Back. In
total, you must divide your manikin geometry part into 58 part surfaces for
each of the 58 sectors. When you sub-divide the manikin according to the
Fiala model sectors, you can also use the sub-divided manikin for the
Equivalent Homogeneous Temperature model.
The Fiala manikin is built from partial spheres and cylinders [405]. This standard manikin is then used to construct a thermal network. However, you are not required to rebuild the manikin in the form of partial spheres and cylinder. You can import a manikin geometry of any shape. The manikin can even be in different positions such as standing, sitting, lying down, and so on.
- Equivalent Homogenous Temperature Manikin
- You must sub-divide the manikin geometry into 17 segments corresponding to body parts such as head, thorax, shoulders, and so on.
You are advised, although optional, to follow a certain convention for naming the segments. Applying the naming convention to your segmented manikin simplifies the setup of the network links considerably. See Step 7d of Modeling Thermal Comfort. For the naming conventions, see Manikin Segmentation Naming Convention Reference.
To split the manikin:
-
Import the manikin geometry as a separate geometry part.
If you have already split the manikin geometry into the required number of part surfaces for the Fiala Thermoregulation models or the Equivalent Homogeneous Temperature model using a dedicated CAD tool, proceed with Step 3.
- Split the manikin geometry part surface into the required number of part surfaces using the Surface Repair Tool or 3D-CAD.
- Place the manikin geometry correctly inside the cabin. Ensure that the manikin does not protrude the cabin. When the manikin geometry is in contact with the seat or the steering wheel, make sure that the surfaces do not intersect. You can consider, for example, deforming the shape of the seat to adjust to the shape of the manikin.
- Generate part contacts for all the part surfaces that the manikin part surfaces touch.