2D thermal membranes (Simcenter Samcef)

Simcenter Samcef 2D thermal membranes (T34, T35, T223, T224 element types) have two faces:

• The Top face faces the element positive normal direction. The positive normal direction means that the nodal sequence is counterclockwise, and the normal is pointing toward you.

• The Bottom face faces the element negative normal direction. The negative normal direction means that the nodal sequence is clockwise, and the normal is pointing away from you.

Note:

The positive normal direction of an element is defined by the right-hand rule, following the I, J, K, L nodal sequence. In this graphic, the blue arrow is the positive normal direction. The negative normal direction of an element follows the I, L, K, J (clockwise) nodal sequence.

In many Simcenter Samcef thermal analysis loads, constraints, or simulation objects, you can apply data equally on one of these two faces. For instance, you can apply a convection value on the top faces of 2D elements and another convection value on their bottom faces.

We recommend that all the selected 2D membranes on which the loads, constraints, or simulation objects will be applied have their normals pointing to the same direction so that all the top faces of these elements point in the same positive normal direction, and all the bottom faces point in the same negative normal direction.

For more information on the 2D elements normals, see Checking and orienting the normals of 2D elements.

Learn more

Checking and orienting the normals of 2D elements

2D thermal membranes (Simcenter Samcef), Simcenter 3D 2021.1 Series

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