# 7.6.1.14.3. Correlation

Syntax

  Annulus Diameter Ratio [{of} SpeciesName] = Correlation ([R = r] | [Threshold = threshold] | [Bulk_Node_Interface = bulk_node_interface])

Scope

  Aria Material

Summary

  Correlation annulus diameter ratio based on hydraulic diameter and wetted perimeter

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
r | real | 0
threshold | real | 0.05
bulk_node_interface | “string” | –