Variable-Order Fractional Models for Wall-Bounded Turbulent Flows [PDF]
Entropy, 2021 Modeling of wall-bounded turbulent flows is still an open problem in classical physics, with relatively slow progress in the last few decades beyond the log law, which only describes the intermediate region in wall-bounded turbulence, i.e., 30–50 y+ to 0.
Fangying Song, George Em Karniadakis
doaj +3 more sources
Turbulence Intensity Scaling: A Fugue [PDF]
Fluids, 2019 We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions.
Nils T. Basse
doaj +4 more sources
A stereoscopic PIV system for the Princeton Superpipe [PDF]
14th International Symposium on Particle Image Velocimetry, 2021 Herein, we describe the design and testing of a stereoscopic PIV system uniquely adapted for the high pressure environment of the Princeton Superpipe.
Ding, Liuyang +5 more
core +3 more sources
Turbulence Intensity and the Friction Factor for Smooth- and Rough-Wall Pipe Flow [PDF]
Fluids, 2017 Turbulence intensity profiles are compared for smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. The profile development in the transition from hydraulically smooth to fully rough flow displays a propagating sequence from the
Nils T. Basse
doaj +2 more sources
Scaling of global properties of fluctuating and mean streamwise velocities in pipe flow: Characterisation of a high Reynolds number transition region [PDF]
The Physics of Fluids, 2021 We study the global, i.e. radially averaged, high Reynolds number (asymptotic) scaling of streamwise turbulence intensity squared defined as ${I^2=\overline{u^2}/U^2}$, where $u$ and $U$ are the fluctuating and mean velocities, respectively (overbar is ...
Basse, Nils T.
core +2 more sources
Small-scale universality in the spectral structure of transitional pipe flows. [PDF]
Sci Adv, 2020 Turbulent flows are not only everywhere, but every turbulent flow is the same at small scales. The extraordinary simplification engendered by this "small-scale universality" is a hallmark of turbulence theory.
Cerbus RT +3 more
europepmc +3 more sources
Static pressure correction in high Reynolds number fully developed turbulent pipe flow [PDF]
, 2002 Measurements are reported of the error in wall static pressure reading due to the finite size of the pressure tapping. The experiments were performed in incompressible turbulent pipe flow over a wide range of Reynolds numbers, and the results indicate ...
McKeon, B. J., Smits, A. J.
core +2 more sources
Review of Scientific Instruments, 2022 An Advanced Research Projects Agency-Energy funded diagnostic system has been deployed to the Princeton field-reversed configuration 2 (PFRC-2) device, located at Princeton Plasma Physics Laboratory. The Portable Diagnostic Package (PDP), designed at Oak
N. Kafle +6 more
semanticscholar +1 more source
A new friction factor relationship for fully developed pipe flow [PDF]
, 2005 The friction factor relationship for high-Reynolds-number fully developed turbulent pipe flow is investigated using two sets of data from the Princeton Superpipe in the range 31×10^3 ≤ ReD ≤ 35×10^6. The constants of Prandtl’s ‘universal’ friction factor
McKeon, B. J. +2 more
core +3 more sources
Wall-bounded turbulent flows at high Reynolds numbers: Recent advances and key issues [PDF]
, 2010 Wall-bounded turbulent flows at high Reynolds numbers have become an increasingly active area of research in recent years. Many challenges remain in theory, scaling, physical understanding, experimental techniques, and numerical simulations.
Marusic, I. +5 more
core +1 more source