Implements the linear triangular finite element for heat transfer problems. Each node has 1 degree of freedom. The cross section thickness property is requested form cross section model. The node numbering is anticlockwise. The element features are summarized in Table 50.
Keyword  Tr1ht 
Description  triangular finite element with linear approximation for heat transfer problems 
Specific parameters   
Unknowns  Single dof (T_f  temperature) is required in each node. 
Approximation  Linear approximation of temperature. 
Integration  Integration using one point gauss integration formula. 
Loads  Body loads are supported. Boundary loads are supported and are computed using numerical integration. The side numbering is following. Each ith element side begins in ith element node and ends on next element node (i+1th node or 1st node, in the case of side number 3). The local positive edge xaxis coincides with side direction, the positive local edge yaxis is rotated 90 degrees anticlockwise (see fig. (21)). 
Features   
CS properties   
Status 

Isoparametric triangular finite element with linear approximation of moisture. Other features are the same as for Tr1ht in Section 3.1.1.
Isoparametric triangular finite element with linear approximations of temperature and moisture. Other features are the same as for Tr1ht in Section 3.1.1.
Represents isoparametric fournode quadrilateral finite element for heat transfer problems. Each node has 1 degree of freedom. Problem should be defined in x,y plane. The cross section thickness property is requested form cross section model. The nodes should be numbered anticlockwise (positive rotation around zaxis). The element features are summarized in Table 51.
Keyword  Quad1ht 
Description  Isoparametric fournode quadrilateral linear interpolation element for heat transfer problems 
Specific parameters  [NIP #(in)] 
Parameters  NIP: allows to change the default number of integration point used. 
Unknowns  Single dof (T_f  temperature) is required in each node. 
Approximation  Linear approximation of temperature. 
Integration  Integration using gauss integration formula in 4 (the default), 9, or 16 integration points. The default number of integration point used can be overloaded using NIP parameter. 
Loads  Body loads are supported. Boundary loads are supported and computed using numerical integration. The side numbering is following. Each ith element side begins in ith element node and ends on next element node (i+1th node or 1st node, in the case of side number 4). The local positive edge xaxis coincides with side direction, the positive local edge yaxis is rotated 90 degrees anticlockwise (see fig. (22)). 
Features   
CS properties   
Status 

Isoparametric fournode quadrilateral finite element. Other features are the same as for Quad1ht in Section 3.1.4.
Represents isoparametric fournode quadrilateral finite element for heat and mass (one constituent) transfer problems. Two dofs (T_f  temperature and C_1  concentration) are required in each node. Linear approximation of temperature and mass concentration. Other features are similar to Quad1 element, see section 3.1.4.