Represents 3D linear pyramid element for transient incompressible flow analysis using SUPG/PSPG stabilization with equal order approximation of velocity and pressure fields. Each node has 3 degrees of freedoms (two components of velocity and pressure). The element features are summarized in Table 64.
linear equal order approximation axisymmetric element
[vof #(rn)][pvof #(rn)]
Three velocity components (V_u, V_v, and V_w) and pressure (P_f) are required in each node.
Linear approximation of velocity and pressure fields.
Constant boundary tractions are supported. Body loads representing the self-weight load are supported.
The element has support for solving problems with two immiscible fluids in a fixed spatial domain. In the present implementation, a LevelSet tracking algorithm is used to track the position of interface. The material model should be of type Keyword: twofluidmat, that supports modelling of two immiscible fluids.