Spectrally-Consistent Regularization of Navier–Stokes Equations
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Scientific Computing"
DOI: 10.1007/s10915-018-0880-x
Abstract: The incompressible Navier–Stokes equations form an excellent mathematical model for turbulent flows. However, direct simulations at high Reynolds numbers are not feasible because the convective term produces far too many relevant scales of motion. Therefore,… read more here.
Keywords: spectrally consistent; consistent regularization; stokes equations; small scales ... See more keywords
Correct energy evolution of stabilized formulations: The relation between VMS, SUPG and GLS via dynamic orthogonal small-scales and isogeometric analysis. I: The convective–diffusive context
Sign Up to like & getrecommendations! Published in 2018 at "Computer Methods in Applied Mechanics and Engineering"
DOI: 10.1016/j.cma.2017.11.020
Abstract: This paper presents the construction of novel stabilized finite element methods in the convective–diffusive context that exhibit correct-energy behavior. Classical stabilized formulations can create unwanted artificial energy. Our contribution corrects this undesired property by employing… read more here.
Keywords: stabilized formulations; energy; correct energy; small scales ... See more keywords
Phenomenology of two-dimensional stably stratified turbulence under large-scale forcing
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Turbulence"
DOI: 10.1080/14685248.2016.1271123
Abstract: ABSTRACT In this paper, we characterise the scaling of energy spectra, and the interscale transfer of energy and enstrophy, for strongly, moderately and weakly stably stratified two-dimensional (2D) turbulence, restricted in a vertical plane, under… read more here.
Keywords: large scale; stably stratified; energy; small scales ... See more keywords
Energetics in robotic flight at small scales
Sign Up to like & getrecommendations! Published in 2017 at "Interface Focus"
DOI: 10.1098/rsfs.2016.0088
Abstract: Recent advances in design, sensing and control have led to aerial robots that offer great promise in a range of real-world applications. However, one critical open question centres on how to improve the energetic efficiency… read more here.
Keywords: robotic flight; small scales; aerial robots; flight small ... See more keywords
Influence of the deviation of the matter power spectrum at small scales on the global 21-cm signal at cosmic dawn
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review D"
DOI: 10.1103/physrevd.107.103501
Abstract: The matter power spectrum has been strongly constrained by astronomical measurements at large scales, but only weakly at small scales. Compared with the standard scenario, the deviation of the matter power spectrum at small scales… read more here.
Keywords: matter; matter power; power spectrum; small scales ... See more keywords
Parametrizing Theories of Gravity on Large and Small Scales in Cosmology.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.122.011301
Abstract: We present a link between parametrizations of alternative theories of gravity on large and small scales in cosmology. This relationship is established using theoretical consistency conditions only. We find that in both limits the "slip"… read more here.
Keywords: scales cosmology; theories gravity; gravity large; gravity ... See more keywords
Erratum: Energy Transfer from Large to Small Scales in Turbulence by Multiscale Nonlinear Strain and Vorticity Interactions [Phys. Rev. Lett. 124, 104501 (2020)].
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.126.029901
Abstract: This corrects the article DOI: 10.1103/PhysRevLett.124.104501. read more here.
Keywords: erratum energy; large small; energy transfer; transfer large ... See more keywords
The behavior of gravitational force at small scales
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Modern Physics D"
DOI: 10.1142/s0218271819440073
Abstract: We point out the idea that, at small scales, gravity can be described by the standard degrees of freedom of general relativity, plus a scalar particle and a degree of freedom of a new type:… read more here.
Keywords: force small; behavior gravitational; small scales; gravitational force ... See more keywords