I plan to add some formula deviations to the article, conventional units used in SI and English systems. If possible, I want to mention some applications to the topic, and a graph to show correlation between Fanning friction factor and Re number, i.e. how to estimate value for f in different regimes of Re numbers.
sources:
- Mohammad,, Khan, Kaleem. Fluid mechanics and machinery. ISBN 9780199456772. OCLC 927946607
- Simons, Stefaan J.R.. (2007). Concepts of Chemical Engineering 4 Chemists - 3.6.1.1 Fanning Friction Factor. Royal Society of Chemistry. Online version available at:
3. Ellenberger, J. Phillip. (2014). Piping and Pipeline Calculations Manual - Construction, Design Fabrication and Examination (2nd Edition) - 4.5 Friction Factor. Elsevier. Online version available at:
4. Chhabra, R.P. Richardson, J.F.. (2008). Non-Newtonian Flow and Applied Rheology - Engineering Applications (2nd Edition) - 3. Flow in Pipes and in Conduits of Non-Circular Cross-Sections. Elsevier. Online version available at:
http://app-knovel-com.offcampus.lib.washington.edu/hotlink/pdf/id:kt006QSGS3/non-newtonian-flow-applied/flow-in-pipes-in-conduits Huywilliam (talk) 05:42, 24 January 2017 (UTC)
Definition
editFanning friction factor is defined as a dimensionless ratio between the shear stress and the kinetic energy density of the fluid
Symbol | Description | SI unit | British unit |
---|---|---|---|
fanning friction factor | N/A | N/A | |
pipe shear stress at the wall | |||
density of the fluid | |||
average fluid velocity |
Algebraic representations
editFor laminar flow in a round tube
edit
where is the Reynolds number of the flow
For turbulent flow in a round tube
editHydraulically smooth piping:
editBlasius (1913)
Koo (1933)
Pipes/tubes of general roughness
editHaaland (1983) ,
Commercial standard steel piping
editDrew (1936)
Fully rough conduits
editNikuradse and Reichert (1943)
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