# 7.6.8.6.3. Correlation

Syntax

  Hydraulic Diameter [{of} SpeciesName] = Correlation [D = d | Bulk_Node_Interface = bulk_node_interface]

Scope

  Aria Material

Summary

  Correlation hydraulic diameter based on sectional area and wetted perimeter

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