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A NEW MEAN VELOCITY SCALING FOR TURBULENT BOUNDARY LAYERS
TURBULENT BOUNDARY LAYERS MEAN VELOCITY SCALING
2014/12/30
A new scaling, originally developed for the mean velocity
profile of turbulent pipe flow, was extended to the case of zero
pressure gradient turbulent boundary layers. At low Reynolds
numbers, the ...
Longitudinal and transverse velocity scaling exponents from merging of the Vortex filament and Multifractal models
Longitudinal and transverse velocity scaling exponents merging of the Vortex filament Multifractal models Fluid Dynamics
2012/4/20
We suggest a simple explanation of the difference between transverse and longitudinal scaling exponents observed in experiments and simulations. Based on the Vortex filament model and Multifractal con...
An ordinary differential equation for velocity distribution and dip-phenomenon in open channel flows
Open channel flows, velocity distribution, dip-phenomenon, ordinary differential equation, semi-analytical solution
2011/8/29
An ordinary differential equation for velocity distribution in open channel flows is presented based on an analysis of the Reynolds-Averaged Navier-Stokes equations and a log-wake modified eddy viscos...
The relationship between near-surface turbulence and gas transfer velocity in freshwater systems and its implications for floating chamber measurements of gas exchange
The relationship near-surface turbulence gas transfer velocity freshwater systems floating chamber measurements of gas exchange
2014/4/17
We performed a series of gas exchange measurements in 12 diverse aquatic systems to develop the direct relationship between near-surface turbulence and gas transfer velocity. The relationship was log-...
EFFECTS OF DIFFERENT MEAN VELOCITY RATIOS ON DYNAMICS CHARACTERISTICS OF A COAXIAL JET
coaxial jets turbulent developing flows experiment
2009/10/14
The flow field of a coaxial jet configuration having inner and outer diameter ratio Di /Do = 0.33 is studied for four values of the velocity ratios and m = Ui /Uo = 5.17, 1.13, 0.77, and 0.54. The pro...
Flow Induced by Non-coaxial Rotations of a Disk and the Fluid at Infinity with Nearly the Same Angular Velocity
Disk Fluid at Infinity Non-coaxial Rotation Viscous Fluid
2009/10/13
In this paper, the flow of a viscous fluid due to the non-coaxial rotations of a disk and the fluid at infinity with a slight angular velocity di erence is studied. The e ect of angular velocity diffe...
Velocity distributions in small hydraulic turbines
Velocity distributions small hydraulic turbines
2010/3/15
Velocity distributions in small hydraulic turbines.