English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We experimentally and numerically investigate the angular momentum transportin turbulent Taylor-Couette flow for independently rotating cylinders at asmall radius ratio of $\eta=0.357$ for various shear Reynolds numbers($4.5\times 10^3 \leq Re_S \leq 1.2 \times 10^5$) and ratios of angularvelocities ($-0.5 \leq \mu \leq 0.2$). \red{The momentum transport in terms ofthe pseudo-Nusselt number ${Nu}_\omega$ does not show a pure power law scalingwith the forcing $Re_S$ and features non-constant effective scaling between$1.3\times 10^4 \leq Re_S \leq 4 \times 10^4$. This transition lies in theclassical turbulent regime and is caused by the curvature-dependent limitedcapacity of the outer cylinder to emit small-scale plumes at a sufficient rateto equalize the angular momentum in the bulk.} For counter-rotating cylinders,a maximum in the torque occurs at $\mu_{\max}=-0.123 \pm 0.030$. The origin ofthis maximum can be attributed to a strengthening of turbulent Taylor vortices,which is revealed by the flow visualization technique. In addition, differentflow states at $\mu_{\max}$ concerning the wavelength of the large-scalevortices have been detected. The experimental and numerical results for theNusselt number show a very good agreement.

Angular momentum transport and flow organisation in Taylor-Couette flow at radius ratio of $\eta=0.357$