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Autor:
Bos, Wouter, Rubinstein, Robert
Recent numerical results show that if a scalar is mixed by periodically forced turbulence, the average mixing rate is directly affected for forcing frequencies small compared to the integral turbulence frequency. We elucidate this by an analytical st
Externí odkaz:
http://arxiv.org/abs/1611.00948
Autor:
Bos, Wouter, Rubinstein, Robert
Publikováno v:
Phys. Rev. Fluids 2, 022601 (2017)
Recent experiments and simulations have shown that unsteady turbulent flows, before reaching a dynamic equilibrium state, display a universal behaviour. We show that the observed universal non-equilibrium scaling can be explained using a non-equilibr
Externí odkaz:
http://arxiv.org/abs/1610.04054
Direct numerical simulations are carried out to investigate scalar mixing in an isotropic turbulent flow with a time-periodic forcing. For high amplitudes of the modulation, it is shown that the average mixing rate is negatively affected at low frequ
Externí odkaz:
http://arxiv.org/abs/1604.02941
Autor:
Portacolone, Elena, Covinsky, Kenneth E., Johnson, Julene K., Rubinstein, Robert L., Halpern, Jodi
Publikováno v:
Journal of Empirical Research on Human Research Ethics: An International Journal, 2019 Dec 01. 14(5), 483-486.
Externí odkaz:
https://www.jstor.org/stable/26853852
Publikováno v:
Syracuse Law Review; 2024, Vol. 74 Issue 2, p741-777, 37p
Autor:
Bos, Wouter, Rubinstein, Robert
Publikováno v:
Journal of Fluid Mechanics 733 (2013) 158-170
Turbulence governed by the Navier-Stokes equations shows a tendency to evolve towards a state in which the nonlinearity is diminished. In fully developed turbulence this tendency can be measured by comparing the variance of the nonlinear term to the
Externí odkaz:
http://arxiv.org/abs/1308.0213
Publikováno v:
Physics of Fluids 24, 7 (2012) 075104
Direct numerical simulation data show that the variance of the coupling term in passive scalar advection by a random velocity field is smaller than it would be if the velocity and scalar fields were statistically independent. This effect is analogous
Externí odkaz:
http://arxiv.org/abs/1107.0791
Second and third order longitudinal structure functions and wavenumber spectra of isotropic turbulence are computed using the EDQNM model and compared to results of the multifractal formalism. At the highest Reynolds number available in windtunnel ex
Externí odkaz:
http://arxiv.org/abs/1101.4726