Strong acceleration intermittency in fluid turbulence is interpreted in the context of different supports for local enstrophy and dissipation by introducing a new decomposition of acceleration. This paper proposes a simple Lamb Vortex Model that captures statistical fea-tures of acceleration, such as probability density functions, flatness factors, and correlation coefficients, observed in the direct numerical simulation of homogeneous isotropic turbulence.
Bibliographical noteFunding Information:
We gratefully acknowledge the support of the World Class University program, the European Research Council, and the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (R31-2008-000-10049-0, 20090093134 and 2010-0023303). Most computations were carried out at KISTI Supercomputing Center, Korea.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering