Application of Kraichnan’s decimated-amplitude scheme to the Betchov model of turbulence
- 26 October 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 59 (17), 1922-1925
- https://doi.org/10.1103/physrevlett.59.1922
Abstract
The decimated-amplitude scheme (DAS) devised by Kraichnan is applied to a random-coupling model of turbulence originally introduced by Betchov to test the direct-interaction approximation (DIA). Using a system of 32 variables, forced stochastically under appropriate statistical constraints, it is shown that the DAS can accurately represent the autocorrelation function of a full Betchov system of 96 variables. A comparison is also made between the DAS and the DIA.Keywords
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