Publications [#281508] of Gabriel G. Katul
Papers Published
- Manes, C; Ridolfi, L; Katul, G, A phenomenological model to describe turbulent friction in permeable-wall flows,
Geophysical Research Letters, vol. 39 no. 14
(July, 2012),
pp. n/a-n/a, American Geophysical Union (AGU), ISSN 0094-8276 [doi]
(last updated on 2023/06/01)Abstract:
Describing the canonical properties of turbulent flows over rough-permeable walls such as gravel beds, vegetatedor snow-covered surfaces have, to date, resisted complete theoretical treatment. The major complication in describing such geophysical flows is that the friction factor - Reynolds number relationships significantly deviate from their conventional Nikuradse curves or Moody diagrams derived over impermeable rough boundaries. A novel phenomenological model that describes such anomalous behavior is proposed. It expands the approach in Gioia and Chakraborty (2006) developed for rough-impermeable pipes to include finite velocity effects within the porous wall and canonical length scales governing the momentum exchanges between interstitial and superficial flows. © 2012. American Geophysical Union.