title: Origin of the imbalance between energy cascade and dissipation in turbulence.
abstract: It is shown in direct numerical simulations of homogeneous isotropic non-stationary turbulence that there is a systematic and significant imbalance between the non-linear energy cascade to fine scales and its dissipation. This imbalance stems from the power required to induce or annihilate fine-scale motions in order to change the level of dissipation. The imbalance is present regardless of transfer time-lags and is applicable to a wide range of Reynolds numbers.
authors.affiliation: LAETA/IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
authors.forename: P C
authors.initials: PC
authors.lastname: Valente
authors.affiliation: Center for Earth Information Science and Technology, JAMSTEC, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Onishi
authors.affiliation: LAETA/IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
authors.forename: C B
authors.initials: CB
authors.lastname: da Silva
mesh_terms: D003198:Computer Simulation; D008962:Models, Theoretical; D009038:Motion; D017711:Nonlinear Dynamics