Determination of the slope and intercept of the universal velocity profile from pressure loss measurements

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:6018690

Hodge, S. A.; Sanders, J. P.; Conklin, J. C.

A method is demonstrated for determination of the slope and intercept of the universal velocity distribution law for flow past roughened surfaces without the need for measurement of the velocity profile. The slope is shown to vary with the nature of the roughened surface and in some cases to deviate considerably from that for turbulent flow past smooth walls. It is further shown that the intercept, commonly known as the roughness parameter R(h/sup +/), is independent of the width of the velocity profile. The dependence noted by previous investigators was due to an assumption that the slope of the law of the wall for roughened surfaces is constant and equal to that for smooth surfaces.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: USDOE (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6018690
• Report Number(s): CONF-790535-1; CFTL--79-1
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
BREEDER REACTORS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUID FLOW
FUEL ELEMENTS
GAS COOLED REACTORS
GAS FLOW
GCFR TYPE REACTORS
REACTOR COMPONENTS
REACTORS
ROUGHNESS
SURFACE PROPERTIES
TURBULENT FLOW
VELOCITY