One-dimensional turbulence
- Sandia National Lab., Livermore, CA (United States)
One-Dimensional Turbulence is a new turbulence modeling strategy involving an unsteady simulation implemented in one spatial dimension. In one dimension, fine scale viscous and molecular-diffusive processes can be resolved affordably in simulations at high turbulence intensity. The mechanistic distinction between advective and molecular processes is thereby preserved, in contrast to turbulence models presently employed. A stochastic process consisting of mapping {open_quote}events{close_quote} applied to a one-dimensional velocity profile represents turbulent advection. The local event rate for given eddy size is proportional to the velocity difference across the eddy. These properties cause an imposed shear to induce an eddy cascade analogous in many respects to the eddy cascade in turbulent flow. Many scaling and fluctuation properties of self-preserving flows, and of passive scalars introduced into these flows, are reproduced.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- OSTI ID:
- 415068
- Report Number(s):
- CONF-9605186-; ON: DE96015339; TRN: 96:005794-0017
- Resource Relation:
- Journal Volume: 30; Journal Issue: 1; Conference: 14. symposium on energy engineering sciences: mechanical sciences, Argonne, IL (United States), 15-17 May 1996; Other Information: PBD: [1996]; Related Information: Is Part Of Proceedings of the fourteenth symposium on energy engineering sciences: Mechanical sciences: Solids and fluids; PB: 226 p.
- Country of Publication:
- United States
- Language:
- English
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