You can import an EnSight file using the File/Import/EnSight... menu item.
File Import EnSight...
This file format is applied to both unstructured and structured data, where each part contains its own local coordinate array. The EnSight Gold software package, which uses this file format, allows you to analyze, visualize, and communicate engineering datasets. It allows the user to take full advantage of parallel processing and rendering and supports a range of virtual reality devices. Furthermore, it enables real-time collaboration.
When selecting this option, the Select File dialog box will appear, where you will specify a filename. This file will have an .encas or .case extension.