Year: 2026
Type: article
Abstract: Surface roughness plays a substantial role in many flows for which Reynolds averaged prediction is needed. The transformation used in the [Formula: see text] model is extended to rough surfaces by adding an effective origin. The log-layer offset is computed as a function of this effective origin, thereby creating a correspondence between effective origin and equivalent sandgrain roughness. A formula is derived for the virtual origin of the fully rough log law. It is shown how the present model is consistent with the fully rough limit.
Source: AIAA Journal
DOI: 10.2514/1.j066816
Authors: Paul Durbin, Zifei Yin
Institutions: Iowa State University, Shanghai Jiao Tong University
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7154706453