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Lagrangian accelerations of particles in superfluid turbulence
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| Zeitschriftentitel: | Journal of Fluid Mechanics |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Journal of Fluid Mechanics, 717, 2013 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Cambridge University Press (CUP)
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| Schlagwörter: |
| author_facet |
La Mantia, M. Duda, D. Rotter, M. Skrbek, L. La Mantia, M. Duda, D. Rotter, M. Skrbek, L. |
|---|---|
| author |
La Mantia, M. Duda, D. Rotter, M. Skrbek, L. |
| spellingShingle |
La Mantia, M. Duda, D. Rotter, M. Skrbek, L. Journal of Fluid Mechanics Lagrangian accelerations of particles in superfluid turbulence Mechanical Engineering Mechanics of Materials Condensed Matter Physics |
| author_sort |
la mantia, m. |
| spelling |
La Mantia, M. Duda, D. Rotter, M. Skrbek, L. 0022-1120 1469-7645 Cambridge University Press (CUP) Mechanical Engineering Mechanics of Materials Condensed Matter Physics http://dx.doi.org/10.1017/jfm.2013.31 <jats:title>Abstract</jats:title><jats:p>Quantum turbulence in thermal counterflow of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline1" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula> is studied at length scales comparable to the mean distance <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline2" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula> between quantized vortices. The Lagrangian dynamics of solid deuterium particles, of radius <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline3" /><jats:tex-math>${R}_{p} $</jats:tex-math></jats:alternatives></jats:inline-formula> about one order of magnitude smaller than <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline4" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula>, is analysed in a planar section of the experimental volume by using the particle tracking velocimetry technique. We show that the average amplitude of the acceleration of the particles seems to increase as the temperature decreases and applied heat flux increases and this can be explained by exploiting the two-fluid model of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline5" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula>. We also report that, at the probed length scales, the normalized distribution of the acceleration of the particles appears to follow an unexpected classical-like behaviour.</jats:p> Lagrangian accelerations of particles in superfluid turbulence Journal of Fluid Mechanics |
| doi_str_mv |
10.1017/jfm.2013.31 |
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Online |
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Physik Technik |
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ElectronicArticle |
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Cambridge University Press (CUP), 2013 |
| imprint_str_mv |
Cambridge University Press (CUP), 2013 |
| issn |
0022-1120 1469-7645 |
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0022-1120 1469-7645 |
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English |
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Cambridge University Press (CUP) (CrossRef) |
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2013 |
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Cambridge University Press (CUP) |
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Journal of Fluid Mechanics |
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| title |
Lagrangian accelerations of particles in superfluid turbulence |
| title_unstemmed |
Lagrangian accelerations of particles in superfluid turbulence |
| title_full |
Lagrangian accelerations of particles in superfluid turbulence |
| title_fullStr |
Lagrangian accelerations of particles in superfluid turbulence |
| title_full_unstemmed |
Lagrangian accelerations of particles in superfluid turbulence |
| title_short |
Lagrangian accelerations of particles in superfluid turbulence |
| title_sort |
lagrangian accelerations of particles in superfluid turbulence |
| topic |
Mechanical Engineering Mechanics of Materials Condensed Matter Physics |
| url |
http://dx.doi.org/10.1017/jfm.2013.31 |
| publishDate |
2013 |
| physical |
|
| description |
<jats:title>Abstract</jats:title><jats:p>Quantum turbulence in thermal counterflow of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline1" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula> is studied at length scales comparable to the mean distance <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline2" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula> between quantized vortices. The Lagrangian dynamics of solid deuterium particles, of radius <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline3" /><jats:tex-math>${R}_{p} $</jats:tex-math></jats:alternatives></jats:inline-formula> about one order of magnitude smaller than <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline4" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula>, is analysed in a planar section of the experimental volume by using the particle tracking velocimetry technique. We show that the average amplitude of the acceleration of the particles seems to increase as the temperature decreases and applied heat flux increases and this can be explained by exploiting the two-fluid model of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline5" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula>. We also report that, at the probed length scales, the normalized distribution of the acceleration of the particles appears to follow an unexpected classical-like behaviour.</jats:p> |
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| author | La Mantia, M., Duda, D., Rotter, M., Skrbek, L. |
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| description | <jats:title>Abstract</jats:title><jats:p>Quantum turbulence in thermal counterflow of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline1" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula> is studied at length scales comparable to the mean distance <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline2" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula> between quantized vortices. The Lagrangian dynamics of solid deuterium particles, of radius <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline3" /><jats:tex-math>${R}_{p} $</jats:tex-math></jats:alternatives></jats:inline-formula> about one order of magnitude smaller than <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline4" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula>, is analysed in a planar section of the experimental volume by using the particle tracking velocimetry technique. We show that the average amplitude of the acceleration of the particles seems to increase as the temperature decreases and applied heat flux increases and this can be explained by exploiting the two-fluid model of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline5" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula>. We also report that, at the probed length scales, the normalized distribution of the acceleration of the particles appears to follow an unexpected classical-like behaviour.</jats:p> |
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| imprint | Cambridge University Press (CUP), 2013 |
| imprint_str_mv | Cambridge University Press (CUP), 2013 |
| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-D161 |
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| language | English |
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| series | Journal of Fluid Mechanics |
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| spelling | La Mantia, M. Duda, D. Rotter, M. Skrbek, L. 0022-1120 1469-7645 Cambridge University Press (CUP) Mechanical Engineering Mechanics of Materials Condensed Matter Physics http://dx.doi.org/10.1017/jfm.2013.31 <jats:title>Abstract</jats:title><jats:p>Quantum turbulence in thermal counterflow of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline1" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula> is studied at length scales comparable to the mean distance <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline2" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula> between quantized vortices. The Lagrangian dynamics of solid deuterium particles, of radius <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline3" /><jats:tex-math>${R}_{p} $</jats:tex-math></jats:alternatives></jats:inline-formula> about one order of magnitude smaller than <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline4" /><jats:tex-math>$\ell $</jats:tex-math></jats:alternatives></jats:inline-formula>, is analysed in a planar section of the experimental volume by using the particle tracking velocimetry technique. We show that the average amplitude of the acceleration of the particles seems to increase as the temperature decreases and applied heat flux increases and this can be explained by exploiting the two-fluid model of superfluid <jats:inline-formula><jats:alternatives><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="gif" xlink:type="simple" xlink:href="S0022112013000311_inline5" /><jats:tex-math>${\text{} }^{4} \mathrm{He} $</jats:tex-math></jats:alternatives></jats:inline-formula>. We also report that, at the probed length scales, the normalized distribution of the acceleration of the particles appears to follow an unexpected classical-like behaviour.</jats:p> Lagrangian accelerations of particles in superfluid turbulence Journal of Fluid Mechanics |
| spellingShingle | La Mantia, M., Duda, D., Rotter, M., Skrbek, L., Journal of Fluid Mechanics, Lagrangian accelerations of particles in superfluid turbulence, Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics |
| title | Lagrangian accelerations of particles in superfluid turbulence |
| title_full | Lagrangian accelerations of particles in superfluid turbulence |
| title_fullStr | Lagrangian accelerations of particles in superfluid turbulence |
| title_full_unstemmed | Lagrangian accelerations of particles in superfluid turbulence |
| title_short | Lagrangian accelerations of particles in superfluid turbulence |
| title_sort | lagrangian accelerations of particles in superfluid turbulence |
| title_unstemmed | Lagrangian accelerations of particles in superfluid turbulence |
| topic | Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics |
| url | http://dx.doi.org/10.1017/jfm.2013.31 |