Quantifying wall turbulence via a symmetry approach. Part 2. Reynolds stresses
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DOI: 10.1017/jfm.2018.405
Abstract: We present new scaling expressions, including high-Reynolds-number ( $Re$ ) predictions, for all Reynolds stress components in the entire flow domain of turbulent channel and pipe flows. In Part 1 (She et al., J. Fluid… read more here.
Keywords: stix x1d70f; prime prime; unicode stix; overline prime ... See more keywords
Fully resolved measurements of turbulent boundary layer flows up to $Re_{\unicode[STIX]{x1D70F}}=20\,000$
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2018.508
Abstract: Fully resolved measurements of turbulent boundary layers are reported for the Reynolds number range $Re_{\unicode[STIX]{x1D70F}}=6000{-}20\,000$ . Despite several decades of research in wall-bounded turbulence there is still controversy over the behaviour of streamwise turbulence intensities… read more here.
Keywords: reynolds number; fully resolved; stix x1d70f; turbulent boundary ... See more keywords
Perturbative corrections for the scaling of heat transport in a Hele-Shaw geometry and its application to geological vertical fractures
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.3
Abstract: In this work, we investigate numerically the perturbative effects of cell aperture in heat transport and thermal dissipation rate for a vertical Hele-Shaw geometry, which is used as an analogue representation of a planar vertical… read more here.
Keywords: rangle unicode; stix; geometry; stix x1d70f ... See more keywords
The structure and dynamics of backflow in turbulent channels
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DOI: 10.1017/jfm.2019.774
Abstract: A statistical description of flow regions with negative streamwise velocity is provided based on simulations of turbulent plane channels in the Reynolds number range $547\leqslant Re_{\unicode[STIX]{x1D70F}}\leqslant 2003$ . It is found that regions of backflow… read more here.
Keywords: dynamics backflow; backflow turbulent; structure dynamics; stix x1d70f ... See more keywords
Scaling and dynamics of turbulence over sparse canopies
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DOI: 10.1017/jfm.2019.999
Abstract: Turbulent flows within and over sparse canopies are investigated using direct numerical simulations at moderate friction Reynolds numbers $Re_{\unicode[STIX]{x1D70F}}\approx 520$ and 1000. The height of the canopies studied is $h^{+}\approx 110{-}200$, which is typical of… read more here.
Keywords: turbulence; stress; stix x1d70f; unicode stix ... See more keywords
FROM TOPOLOGIES OF A SET TO SUBRINGS OF ITS POWER SET
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DOI: 10.1017/s0004972720000015
Abstract: Let $X$ be a nonempty set and ${\mathcal{P}}(X)$ the power set of $X$. The aim of this paper is to identify the unital subrings of ${\mathcal{P}}(X)$ and to compute its cardinality when it is finite.… read more here.
Keywords: unicode stix; stix x1d70f; x1d70f unicode;
Random ordering in modulus of consecutive Hecke eigenvalues of primitive forms
Sign Up to like & getrecommendations! Published in 2018 at "Compositio Mathematica"
DOI: 10.1112/s0010437x18007455
Abstract: Let $\unicode[STIX]{x1D70F}(\cdot )$ be the classical Ramanujan $\unicode[STIX]{x1D70F}$ -function and let $k$ be a positive integer such that $\unicode[STIX]{x1D70F}(n)\neq 0$ for $1\leqslant n\leqslant k/2$ . (This is known to be true for $k read more here.
Keywords: hecke eigenvalues; stix x1d70e; unicode stix; stix x1d70f ... See more keywords