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Temporal evolution of the phase θ 1 in the circle 1 (solid lines) and of the phase θ 5 in the circle 5 (dash-dotted line) of the convection cell (see locations of the circles in figure 2), as obtained in the experiments for Ra = 1.42 × 10 7 , Pr ≈ 0.0093 (a, c, e, g) and in the DNS for Ra = 1.67 × 10 7 , Pr = 0.0094 (b, d, f, h) for the cell inclination angles β = 0 • (a, b), β = 20 • (c), β = 36 • (d), β = 40 • (e), β = 72 • (f ) and β = 90 • (g, h).

Temporal evolution of the phase θ 1 in the circle 1 (solid lines) and of the phase θ 5 in the circle 5 (dash-dotted line) of the convection cell (see locations of the circles in figure 2), as obtained in the experiments for Ra = 1.42 × 10 7 , Pr ≈ 0.0093 (a, c, e, g) and in the DNS for Ra = 1.67 × 10 7 , Pr = 0.0094 (b, d, f, h) for the cell inclination angles β = 0 • (a, b), β = 20 • (c), β = 36 • (d), β = 40 • (e), β = 72 • (f ) and β = 90 • (g, h).

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Preprint
Full-text available
Inclined turbulent thermal convection by large Rayleigh numbers in extremely small-Prandtl-number fluids is studied based on results of both, measurements and high-resolution numerical simulations. The Prandtl number $Pr\approx0.0093$ considered in the experiments and the Large-Eddy Simulations (LES) and $Pr=0.0094$ considered in the Direct Numeric...

Contexts in source publication

Context 1
... figure 8 we present the dynamics of the LSC twisting and sloshing mode. There, the temporal evolution of the phases of the LSC in the circle 1 (closer to the heated plate) and in the circle 5 (closer to the cold plate) are presented for different inclinations angles β of the convection cell filled with liquid sodium, as it is obtained in our DNS and measurements. ...
Context 2
... main evidence for the existence of the sloshing mode is the visible strong anticorrelation of the phases θ 1 (t) and θ 5 (t), which are measured via the probes at the circles 1 and 5, respectively. It is present in the RBC case (figures 8 a, b) and for the inclination angles β = 20 • (figure 8 c) and β = 36 • ( figure 8 d). figure 10 are taken. ...
Context 3
... measurements and DNS at the inclination angles β ≥ 40 • ( figure 8 e) show that with the increasing β the above anticorrelation vanish. At large inclination angles, there is no visible anticorrelation of the phases θ 1 (t) and θ 5 (t) and one can conclude that the sloshing movement of the LSC is not present anymore (figures 8 f, g, h). ...
Context 4
... measurements and DNS at the inclination angles β ≥ 40 • ( figure 8 e) show that with the increasing β the above anticorrelation vanish. At large inclination angles, there is no visible anticorrelation of the phases θ 1 (t) and θ 5 (t) and one can conclude that the sloshing movement of the LSC is not present anymore (figures 8 f, g, h). ...
Context 5
... us investigate the IC flow in liquid sodium for the inclination angle β = 36 • , as in figure 8d, where a very strong LSC sloshing is observed. In figure 9 we analyse this flow in more detail. ...
Context 6
... figure 8 we present the dynamics of the LSC twisting and sloshing mode. There, the temporal evolution of the phases of the LSC in the circle 1 (closer to the heated plate) and in the circle 5 (closer to the cold plate) are presented for different inclinations angles β of the convection cell filled with liquid sodium, as it is obtained in our DNS and measurements. ...
Context 7
... main evidence for the existence of the sloshing mode is the visible strong anticorrelation of the phases θ 1 (t) and θ 5 (t), which are measured via the probes at the circles 1 and 5, respectively. It is present in the RBC case (figures 8 a, b) and for the inclination angles β = 20 • (figure 8 c) and β = 36 • ( figure 8 d). figure 10 are taken. ...
Context 8
... measurements and DNS at the inclination angles β ≥ 40 • ( figure 8 e) show that with the increasing β the above anticorrelation vanish. At large inclination angles, there is no visible anticorrelation of the phases θ 1 (t) and θ 5 (t) and one can conclude that the sloshing movement of the LSC is not present anymore (figures 8 f, g, h). ...
Context 9
... measurements and DNS at the inclination angles β ≥ 40 • ( figure 8 e) show that with the increasing β the above anticorrelation vanish. At large inclination angles, there is no visible anticorrelation of the phases θ 1 (t) and θ 5 (t) and one can conclude that the sloshing movement of the LSC is not present anymore (figures 8 f, g, h). ...
Context 10
... us investigate the IC flow in liquid sodium for the inclination angle β = 36 • , as in figure 8d, where a very strong LSC sloshing is observed. In figure 9 we analyse this flow in more detail. ...

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