Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Yukio Kaneda"'
Autor:
Toshiyuki Gotoh, Yukio Kaneda
Publikováno v:
Atmosphere, Vol 14, Iss 6, p 1053 (2023)
Statistics in the inertial energy transfer range (IETR) of d-dimensional turbulence ( 2≤d≤3) are studied using a Lagrangian renormalized approximation (LRA). The LRA suggests that the energy spectrum in the IETR is given by Kd|ε¯|2/3k−5/3, wh
Externí odkaz:
https://doaj.org/article/ba0fca64851c4a278650e86b51313689
Turbulence is ubiquitous in science, technology and daily life and yet, despite years of research, our understanding of its fundamental nature is still tentative and incomplete. More generally, the tools required for a deep understanding of strongly
Turbulence is widely recognized as one of the outstanding problems of the physical sciences, but it still remains only partially understood despite having attracted the sustained efforts of many leading scientists for well over a century. In A Voyage
Autor:
Yukio Kaneda, Rachel A. Nye, Esteban A. Marques, Silvia Armini, Annelies Delabie, Michiel J. van Setten, Geoffrey Pourtois
Publikováno v:
The Journal of Physical Chemistry C.
Publikováno v:
Physical Review Fluids. 8
Autor:
Katsunori Yoshimatsu, Yukio Kaneda
Publikováno v:
Journal of the Physical Society of Japan. 91
We study the free decay of incompressible homogeneous nonaxisymmetric turbulence with and without helicity, by using direct numerical simulations (DNSs). Its initial energy spectrum E(k), say at t = t0, is given by Ck2 + o(k2) in a sufficiently low k
Publikováno v:
Journal of Fluid Mechanics. 929
In high-Reynolds-number turbulence the spatial distribution of velocity fluctuation at small scales is strongly non-uniform. In accordance with the non-uniformity, the distributions of the inertial and viscous forces are also non-uniform. According t
Publikováno v:
Physical Review Fluids. 5
High-resolution direct numerical simulations of incompressible turbulence with Taylor-scale Reynolds number up to 2250 show that there exists a scaling-range (approximately $100lr/\ensuremath{\eta}l400$), in which the two-point second order velocity
Autor:
Yukio Kaneda, Katsunori Yoshimatsu
Publikováno v:
Physical Review Fluids. 5
We study the mixing of a passive scalar in homogeneous turbulent flow with and without anisotropic external force. It is assumed that no scalar source exists and the scalar spectrum at an initial time instant t0 is given by the form Ck^2+o(k^2) at th
Publikováno v:
Physical Review Letters. 122
The idea of linear response theory well known in the statistical mechanics for thermal equilibrium systems is applied to one-point statistics in the inertial sublayer of wall-bounded turbulence (WBT). A close analogy between the energy transfer from