Nozzle Attributes
The following attributes may be used in nozzle placement and
vicinity routing languages. They may be referred to within a language
expression by adding the prefix nozzle. to the attribute name.
- type is inferred from the nozzle definition (inlet, outlet, etc.)
- flow-direction is inferred from the process input (inlet, outlet, nil)
- nominal_diameter is the user’s input nominal diameter (in main units)
- outer_diameter_at_end is the outer diameter at nozzle based on nominal diameter
- flange_diameter is the flange diameter based on nominal diameter and pipeline rating
- local_orientation is the orientation of the nozzle with respect to the equipment’s local coordinate system (left, right, front, back, up, down)
- element_name is the name of the element on which the nozzle is placed
- element_face is the name of the element face on which the nozzle is placed
- grouped indicates whether the nozzle is part of a group connected to a header (true, false)
- group_alignment is the collective orientation of the set of grouped nozzles of which this grouped nozzle is a part (inline, converging, diverging, parallel, nil)
- location_keyword indicates if the nozzle is in a structure (:structure) or not (:field)
In nozzle placement rule definitions, the rule itself can
be referenced. Preference these attributes with
rule.
- number-of-nozzles is the number of nozzles for which the specific rule (and its offsets) applies on the current equipment.
- nozzle-count is the position of this nozzle in the execution of the current rule (with its offsets) starting with 1 for the first nozzle. Similarly, offset.number-of-nozzles and offset.nozzle-count are bound to the nozzles for the current offset rule.
- face.u-dimension and face.v-dimension are bound to the sizes of the chosen face in the u- and v-directions.
General note for the nozzle language:
- previous. can be used to replace nozzle. to get values from the most recently placed nozzle in a nozzle rule.
