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bed roughness

bed roughness

A Dictionary of Earth Sciences | 1999 | | Copyright

bed roughness The surface relief developed at the base of a flowing fluid, comprising bedforms (form roughness), and particles projecting from the sediment carpet (grain roughness). ‘Bed roughness’ is the quantifiable factor which expresses the frictional effect that the bed exerts on the flow. Surfaces whose bed-roughness elements do not project through the viscous sub-layer at the base of the flow are said to be smooth. Surfaces whose bed-roughness elements project through the sub-layer are said to be rough.
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AILSA ALLABY and MICHAEL ALLABY. "bed roughness." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "bed roughness." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O13-bedroughness.html

AILSA ALLABY and MICHAEL ALLABY. "bed roughness." A Dictionary of Earth Sciences. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-bedroughness.html

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bed roughness

A Dictionary of Ecology | 2004 | | Copyright

bed roughness The surface relief developed at the base of a flowing fluid, comprising bedforms (form roughness) and particles projecting from the sediment carpet (grain roughness). Bed roughness is the quantifiable factor which expresses the frictional effect that the bed exerts on the flow. Surfaces whose bed-roughness elements do not project through the viscous sub-layer at the base of the flow are said to be smooth. Surfaces whose bed-roughness elements project through the sublayer are said to be rough.
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MICHAEL ALLABY. "bed roughness." A Dictionary of Ecology. 2004. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "bed roughness." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O14-bedroughness.html

MICHAEL ALLABY. "bed roughness." A Dictionary of Ecology. 2004. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-bedroughness.html

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Free newspaper and magazine articles

Roughness effects on turbulence characteristics in an open channel flow.(Report)
Magazine article from: Canadian Journal of Civil Engineering; 12/1/2010
Flow resistance in large-scale roughness condition.(Technical report)
Magazine article from: Canadian Journal of Civil Engineering; 11/1/2008
Inertia effects in bed-load transport models.(Technical report)
Magazine article from: Canadian Journal of Civil Engineering; 10/1/2009

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