Turbomachinery Schema

The geometry of a turbomachinery model can be quite complex, but all these models have some characteristics in common, such as the presence of one or more components, and parts that play the role of inlet, outlet, fluid domain, hub or shroud for each component. While some turbomachinery simulations are run for the entirely of the geometry, it is more common that a model will represent only a section of the 360 degrees total geometry (often refereed to as wedge), and that a rotational symmetry needs to be applied in order to reconstruct the entire model.
All of this information is crucial when running turbomachinery specific analysis. In EnSight, the user can provide the information manually by entering them into the Initialization section of the Turbomachinery tool (see the Turbomachinery section in the User Manual for more details). This information is then stored into EnSight's parts and case METADATA for future use. Some readers have the ability to automatically detect these settings and fill in the METADATA information directly, resulting in a more streamlined experience for the user. Here we will present and explain each of the METADATA information that is needed for Turbomachinery analysis.

On the METDATA for the ENS_CASE object, set:

• ENS_COMPONENT_ORDER: string that contains the name of the components, comma separated. The order is important and should be from downstream to upstream. No spaces in between component names or the commas;
• ENS_TURBO_ORIGIN: string that contains the X, Y, Z values for the rotation origin, comma separated;
• ENS_TURBO_AXIS: string that contains the X, Y, Z values for the rotation axis, comma separated.

On METADATA for the ENS_PART objects, set:

• ENS_SYMMETRY_COUNT: the number of repetitions in rotational symmetry to get a full 360 degrees model
• ENS_TURBO_STAGE: string that contains the component the part belongs to and its turbomachinery type (all capitals), comma separated. The supported turbomachinery types are: FLUID INLET OUTLET HUB SHROUD. If a part belongs to multiple components, merge the strings for each component via a ';' delimiter. So for example, a part that is the inlet for component R1 and the outlet for component S2 will have the ENS_TURBO_STAGE tag in the METADATA as 'R1,INLET;S2,OUTLET'