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Alternate Scales for Turbulent Boundary Layer on Transitional Rough Walls: Universal Log Laws
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present work deals with four new alternate transitional surface roughness scales for description of the turbulent boundary layer. The nondimensional roughness scale ϕ is associated with the ...
Erratum: “Friction factor directly from transitional roughness in a turbulent pipe flow” [ASME Trans. J. Fluid Eng., 2007, 129, pp. 1255–1267]
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Page: 1258: In friction factor relations 34, 35, 36, and 37, replace δ by D in first location, to read asDisplay Formula1λ=-2log10[2.51Reλ+h3.7Dexp(-j5.66Reλδh)] (34) Display Formula1λ=-1.93log10[ ...
Turbulent Boundary Layer With Negligible Wall Stress
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The turbulent boundary layer subjected to strong adverse pressure gradient near the separation region has been analyzed at large Reynolds numbers by the method of matched asymptotic expansions. ...
Analysis of Instantaneous Turbulent Velocity Vector and Temperature Profiles in Transitional Rough Channel Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The instantaneous velocity vector and instantaneous temperature in a turbulent flow in a transitionally rough channel have been analyzed from unsteady Navier–Stokes equations and unsteady thermal ...
Friction Factor Directly From Transitional Roughness in a Turbulent Pipe Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The friction factor data from transitional rough test pipes, from the measurements of and (2003, “ Friction Factor Directly From Roughness Measurements,” J. Energy Resour. Technol.125, pp. 126–130), ...
Power Law Velocity Profile in the Turbulent Boundary Layer on Transitional Rough Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new approach to scaling of transitional wall roughness in turbulent flow is introduced by a new nondimensional roughness scale ϕ. This scale gives rise to an inner viscous length scale ...
Analysis of a Power Law and Log Law for a Turbulent Wall Jet Over a Transitional Rough Surface: Universal Relations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The power law and log law velocity profiles and an integral analysis in a turbulent wall jet over a transitional rough surface have been proposed. Based on open mean momentum Reynolds equations, ...
Alternate Scales for Turbulent Flow in Transitional Rough Pipes: Universal Log Laws
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In transitional rough pipes, the present work deals with alternate four new scales, the inner wall transitional roughness variable ζ=Z+∕ϕ, associated with a particular roughness level, defined ...
Power Law Velocity and Temperature Profiles in a Fully Developed Turbulent Channel Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The power law temperature distribution in a fully developed turbulent channel flow for large Peclet numbers has been proposed in the present work. The analysis of the power law velocity profile ...
Intermediate Scaling of Turbulent Momentum and Heat Transfer in a Transitional Rough Channel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The properties of the mean momentum and thermal balance in fully developed turbulent channel flow on transitional rough surface have been explored by method of matched asymptotic expansions. ...