Decaying grid-generated turbulence in a rotating tank

Morize, Cyprien; Moisy, Frédéric; Rabaud, Marc

doi:10.1063/1.2046710

Cited by 161 publications

(170 citation statements)

References 49 publications

(81 reference statements)

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“…The breaking of asymmetry between cyclonic and anticyclonic vortices, which has been observed both in experiments [15,25,[28][29][30] and in numerical simulations [20,31,32], is a distinctive feature of rotating turbulent flows. Here we are interested to investigate how this asymmetry is influenced both by the rotation and the confinement of the flow.…”

Section: Cyclonic-anticyclonic Asymmetrymentioning

confidence: 99%

Dimensional transition in rotating turbulence

et al. 2014

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In this work we investigate, by means of direct numerical hyperviscous simulations, how rotation affects the bidimensionalization of a turbulent flow. We study a thin layer of fluid, forced by a two-dimensional forcing, within the framework of the "split cascade" in which the injected energy flows both to small scales (generating the direct cascade) and to large scale (to form the inverse cascade). It is shown that rotation reinforces the inverse cascade at the expense of the direct one, thus promoting bidimensionalization of the flow. This is achieved by a suppression of the enstrophy production at large scales. Nonetheless, we find that, in the range of rotation rates investigated, increasing the vertical size of the computational domain causes a reduction of the flux of the inverse cascade. Our results suggest that, even in rotating flows, the inverse cascade may eventually disappear when the vertical scale is sufficiently large with respect to the forcing scale. We also study how the split cascade and confinement influence the breaking of symmetry induced by rotation.

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Section: Cyclonic-anticyclonic Asymmetrymentioning

confidence: 99%

Dimensional transition in rotating turbulence

et al. 2014

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“…More recently, Baroud et al (2003) investigated turbulent water jets in a rotating annulus at Re λ = 360, and found the turbulent flow to be highly intermittent, independent of the Rossby number. Morize, Moisy, and Rabaud performed several experiments of decaying rotating turbulence in large and small facilities (Morize et al, 2005, Morize and Moisy, 2006, Moisy et al, 2010, and described in details some aspects of the coupling between the inertial wave pattern and the decaying turbulent field using high-resolution PIV. Accurate visualisations by means of reflective flakes of the formation and evolution of columnar eddies in rotating turbulence were performed by Davidson et al (2006).…”

Section: Brief Overview Of Previous Studies Of Rotating Turbulencementioning

confidence: 99%

Table-top rotating turbulence: an experimental insight through particle tracking

Castello

Clercx

Trieling

et al. 2009

Springer Proceedings in Physics

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“…Numerical simulations have shown that the faster growth of certain integral length scales is also related to the inhibited energy cascade. [21][22][23] Among the most recent experimental studies are those by Baroud et al, 13,14 Morize and co-workers, 15,24 and by Davidson an co-workers. 16, 17 Baroud and co-workers studied the flow in a rotating annulus with forcing created by pumping water into ͑out of͒ the annulus through an inner ͑outer͒ ring of holes on the bottom of the annulus.…”

Section: Introductionmentioning

confidence: 99%

“…In laboratory experiments reported in Ref. 15 initially isotropic homogeneous turbulence is generated by rapidly towing a grid in a rotating liquid-filled container. During the decay, strong cyclonic coherent vortices emerge as the result of enhanced stretching of the cyclonic vorticity by the background rotation and the selective instability of the anticyclonic vorticity by the Coriolis force.…”

Section: Introductionmentioning

confidence: 99%

Experiments on rapidly rotating turbulent flows

et al. 2009

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A novel laboratory experiment for investigating statistically steady rotating turbulence is presented. Turbulence is produced nonintrusively by means of electromagnetic forcing. Depending on the rotation rate the Taylor-based Reynolds number is found to be in the range of 90Շ Re Շ 240. Relevant properties of the turbulence, both with and without rotation, have been quantified with stereoscopic particle image velocimetry ͑SPIV͒. This method enables instantaneous measurement of all three velocity components in horizontal planes at a distance H from the bottom. The root-mean-square turbulent velocity decreases inversely proportional to H in the nonrotating experiments and is approximately constant when background rotation is applied. The integral length scale shows a weak H-dependence in the nonrotating experiments which is presumably due to the spatial extent of the forcing. Based on the behavior of the principal invariants of the Reynolds stress anisotropy tensor, the rotating turbulence has been characterized as a three-dimensional two-component flow. Furthermore, these SPIV measurements provide supporting evidence for ͑i͒ reduction of the dissipation rate, ͑ii͒ suppression of the vertical velocity as compared to the horizontal velocity, and ͑iii͒ increased spatial and temporal correlation of the horizontal velocity components, with the temporal correlation growing ever stronger as the rotation rate is increased. A less commonly known feature of rotating turbulence, quantified here for the first time in a laboratory setting, is the reverse dependence on the rotation rate of the spatial horizontal velocity correlation functions. Another interesting result concerns the linear ͑anomalous͒ scaling of the longitudinal spatial structure function exponents in the presence of rotation, consistent with a study by Baroud et al. ͓Phys. Rev. Lett. 88, 114501 ͑2002͔͒.

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Decaying grid-generated turbulence in a rotating tank

Cited by 161 publications

References 49 publications

Dimensional transition in rotating turbulence

Dimensional transition in rotating turbulence

Table-top rotating turbulence: an experimental insight through particle tracking

Experiments on rapidly rotating turbulent flows

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