Fully Developed Turbulent Channel Flow Subject to System Rotation

Maciel, Yvan; Picard, Donald; Yan, Guorong; Gleyzes, C.; Dumas, Guy

doi:10.2514/6.2003-4153

Cited by 12 publications

(11 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…If the focus of interest is on the turbulence field rather than only on the mean flow profile, a substantially longer duct is required. Maciel et al [12] referred to Durst et al [13] who showed that fully developed flow conditions are reached about 60H downstream. In practice, however, the need to rotate the duct anyhow imposes a severe constraint on its length L, irrespective of whether the duct is rotating about a vertical or a horizontal axis.…”

Section: Conflicting Constraintsmentioning

confidence: 95%

See 1 more Smart Citation

A new set-up for PIV measurements in rotating turbulent duct flows

Visscher

Andersson

Barri

et al. 2011

Flow Measurement and Instrumentation

View full text Add to dashboard Cite

Section: Conflicting Constraintsmentioning

confidence: 95%

“…More recently, Maciel et al [12] designed a similar rotating apparatus aimed to rotate up to 4 revolutions per second (240 r.p.m.). A rotation number as high as 2.0 can then be reached at relatively low Reynolds numbers.…”

Section: Earlier Experiments In High-aspect-ratio Ductsmentioning

confidence: 99%

A new set-up for PIV measurements in rotating turbulent duct flows

Visscher

Andersson

Barri

et al. 2011

Flow Measurement and Instrumentation

View full text Add to dashboard Cite

“…Besides exposing the change of some underlying structures caused by rotation, they provided plenty of quantitative data, including the 2Ω * -slope of the mean velocity profile near the pressure (unstable) side (Ω * is the angular velocity). Experimental studies have also been performed by, e.g., Nakabayashi & Kitoh (1996), Maciel et al (2003) and Nakabayashi & Kitoh (2005). Nakabayashi & Kitoh (2005) investigated the turbulence characteristics, including turbulence intensities, Reynolds shear stress, correlation coefficient, skewness and flatness factors, four-quadrant analysis, autocorrelation coefficient and power spectra, by using their experimental data.…”

mentioning

confidence: 99%

Direct numerical simulation of turbulent channel flow with spanwise rotation

2015

View full text Add to dashboard Cite

A series of direct numerical simulations of turbulent channel flow with spanwise rotation at fixed global friction Reynolds number is performed to investigate the rotation effects on the mean velocity, streamwise velocity fluctuations, Reynolds shear stress and turbulent kinetic energy. The global friction Reynolds number is chosen to be Re τ = u * τ h * /ν * = 180 (u * τ is the global friction velocity, h * is the channel half-width and ν * is the kinematic viscosity), while the global-friction-velocity-based rotation number Ro τ = 2Ω * h * /u * τ (Ω * is the dimensional angular velocity) varies from 0 to 130. In the previously reported 2Ω * -slope region for the mean velocity, a linear behaviour for the streamwise velocity fluctuations, a unit-slope linear profile for the Reynolds shear stress and a −2Ro τ -slope linear profile for the production term of u u have been identified for the first time. The critical rotation number, which corresponds to the laminar limit, is predicted to be equal to Re τ according to the unit-slope linear profile of the Reynolds shear stress. Our results also show that a parabolic profile of the mean velocity can be identified around the 'second plateau' region of the Reynolds shear stress for Ro τ 22. The parabolas at different rotation numbers have the same shape of 1/Re τ , the radius of curvature at the vertex. Furthermore, the system rotation increases the volume-averaged turbulent kinetic energy at lower rotation rates, and then decreases it when Ro τ 16.

show abstract

“…The effects on other two sides could be ignored. Maciel et al 4 studied the fully developed turbulent boundary layer characteristics in a rotating channel with hot-wire. The experimental conclusion is that the development of the turbulent boundary layer appears to take two forms: standard two-dimensional flow development and accelerated flow due to the development of end wall effects.…”

mentioning

confidence: 99%

Experimental Investigation on Velocity and Temperature Field in a Rotating Non-isothermal Turbulent Boundary Layer using Hot-wire

Gangfu

You

et al. 2020

Sci Rep

View full text Add to dashboard Cite

This experiment measured the instantaneous temperature and velocity field synchronously in nonisothermal turbulent boundary layer in a rotating straight channel with a parallel-array hot-wire probe. the Reynolds number based on the bulk mean velocity (U) and hydraulic diameter (D) is 19000, and the rotation numbers are 0, 0.07, 0.14, 0.21 and 0.28. The mean velocity u and mean temperature T as well as their fluctuating quantity u' and T' were measured at three streamwise locations (x/D = 4.06, 5.31, 6.56). A method for temperature-changing calibration with constant temperature hot-wire anemometers was proposed. it achieved the calibration in operational temperature range (15.5 °C-50 °C) of the hot-wire via a home-made heating section. The measurement system can obtain the velocity and temperature in a non-isothermal turbulent boundary layer at rotating conditions. The result analysis mainly contains the dimensionless mean temperature, temperature fluctuation as well as its skewness and flatness and streamwise turbulent heat flux. For the trailing side, the rotation effect is more obvious, and makes the dimensionless temperature profiles lower than that under static conditions. The dimensionless streamwise heat flux shows a linear decrease trend in the boundary layer. It is hoped that this research can improve our understanding of the flow and heat transfer mechanism in the internal cooling passages of turbine rotor blades.

show abstract

Fully Developed Turbulent Channel Flow Subject to System Rotation

Cited by 12 publications

References 8 publications

A new set-up for PIV measurements in rotating turbulent duct flows

A new set-up for PIV measurements in rotating turbulent duct flows

Direct numerical simulation of turbulent channel flow with spanwise rotation

Experimental Investigation on Velocity and Temperature Field in a Rotating Non-isothermal Turbulent Boundary Layer using Hot-wire

Contact Info

Product

Resources

About