Hydrostatic fluid elements are used to model fluids that are fully enclosed by solids (containers). The available elements are:

These elements are formulated for linear and nonlinear static and transient dynamic applications. For more information, see HSFLD241 - 2D Hydrostatic Fluid and HSFLD242 - 3D Hydrostatic Fluid in the Mechanical APDL Theory Reference.

For an example analysis, see Hydrostatic Fluid Analysis of an Inflating and Rolling Tire in the Technology Showcase: Example Problems.