Zobrazeno 1 - 10
of 117
pro vyhledávání: '"McComb, W. D."'
Autor:
Yoffe, S. R., McComb, W. D.
Direct numerical simulations of the forced Navier-Stokes equations were performed, in which each shell-averaged quantity evolved from a value appropriate to an initial Gaussian state, to fluctuate about a mean value. Once the transient had passed, me
Externí odkaz:
http://arxiv.org/abs/2107.09112
Autor:
McComb, W. D., Yoffe, S. R.
From a critical review of Onsager's pioneering paper which was published in 1949 we conclude that his analysis was at odds with other workers in the field because instead of taking the infinite Reynolds number limit he simply set the viscosity equal
Externí odkaz:
http://arxiv.org/abs/2012.05614
Autor:
McComb, W. D.
A new form of the well known Lin equation for the energy balance in isotropic turbulence is given which takes account of the filtered-partitioned transfer spectra which were used to resolve the scale paradox. It is argued that this new formulation pr
Externí odkaz:
http://arxiv.org/abs/2007.13622
Autor:
McComb, W. D., May, M. Q.
It has long been established that turbulence energy spectra scale on the Kolmogorov (1941) variables over a wide range of Reynolds numbers and in vastly different physical systems, depending only on the dissipation rate, the kinematic viscosity and t
Externí odkaz:
http://arxiv.org/abs/1812.09174
Autor:
Yoffe, S. R., McComb, W. D.
Publikováno v:
Phys. Rev. Fluids 3, 104605 (2018)
From DNS of turbulence decaying from specified initial conditions for the range of initial Taylor-Reynolds numbers 2.58 < R{\lambda}(0) < 358.6, it was found that the shape of the iconic curve of dimensionless dissipation versus Reynolds number depen
Externí odkaz:
http://arxiv.org/abs/1805.01238
Autor:
McComb, W. D., Fairhurst, R. B.
An expression for the dimensionless dissipation rate was derived from the Karman-Howarth equation by asymptotic expansion of the second- and third- order structure functions in powers of the inverse Reynolds number. The implications of the time-deriv
Externí odkaz:
http://arxiv.org/abs/1712.05300
Publikováno v:
J. Phys. A: Math. Theor. 48 25FT01 (2015)
We observe a symmetry-breaking transition from a turbulent to a self-organized state in direct numerical simulation of the Navier-Stokes equation at very low Reynolds number. In this self-organized state the kinetic energy is contained only in modes
Externí odkaz:
http://arxiv.org/abs/1410.2987
Autor:
McComb, W. D., Linkmann, M. F.
The low wavenumber expansion of the energy spectrum takes the well known form: $ E(k,t) = E_2(t) k^2 + E_4(t) k^4 + ... $, where the coefficients are weighted integrals against the correlation function $C(r,t)$. We show that expressing $E(k,t)$ in te
Externí odkaz:
http://arxiv.org/abs/1408.1287
Publikováno v:
Phys. Rev. E 90 , 053010 (2014)
The pseudospectral method, in conjunction with a new technique for obtaining scaling exponents $\zeta_n$ from the structure functions $S_n(r)$, is presented as an alternative to the extended self-similarity (ESS) method and the use of generalized str
Externí odkaz:
http://arxiv.org/abs/1408.0539