Helicity statistics in homogeneous and isotropic turbulence and turbulence models
نویسندگان
چکیده
منابع مشابه
Streamlines in stationary homogeneous isotropic turbulence and fractal-generated turbulence
We compare streamline statistics in stationary homogeneous isotropic turbulence and in turbulence generated by a fractal square grid. We examine streamline segments characterised by the velocity difference u D and the distance l between extremum points. We find close agreement between the stationary homogeneous isotropic turbulence and the decay region of the fractal-generated turbulence as wel...
متن کاملSpinodal decomposition in homogeneous and isotropic turbulence.
We study the competition between domain coarsening in a symmetric binary mixture below critical temperature and turbulent fluctuations. We find that the coarsening process is arrested in the presence of turbulence. The physics of the process shares remarkable similarities with the behavior of diluted turbulent emulsions and the arrest length scale can be estimated with an argument similar to th...
متن کاملThe joint helicity-energy cascade for homogeneous, isotropic turbulence generated by approximate deconvolution models
In the large, getting a prediction of a turbulent flow right means getting the energy balance correct and getting the rotational structures correct. In two-dimensional flows this means (in the large) matching the energy and enstrophy statistics. In this report we consider a family of large eddy simulation approximate deconvolution models of turbulence. Based on a rigorous analysis of their kine...
متن کاملCascade time scales for energy and helicity in homogeneous isotropic turbulence.
We extend the Kolmogorov phenomenology for the scaling of energy spectra in high-Reynolds-number turbulence, to explicitly include the effect of helicity. There exists a time scale tau(H) for helicity transfer in homogeneous, isotropic turbulence with helicity. We arrive at this time scale using the phenomenological arguments used by Kraichnan to derive the time scale tau(E) for energy transfer...
متن کاملDroplet size distribution in homogeneous isotropic turbulence
• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Fluids
سال: 2017
ISSN: 2469-990X
DOI: 10.1103/physrevfluids.2.024601