# Numerical and Theoretical Studies of Turbulence and Transport with E x B Shear Flows

## Abstract

This paper reports: (1) substantial transport reduction by turbulence-driven E x B flows observed in 3D nonlinear gyrokinetic simulations of microturbulence in magnetically-confined toroidal plasmas; (2) analytical derivation of the effective shearing rate for the time-dependent E x B flow; (3) interpretation of experimental data using linear gyrokinetic microinstability rotation models of E x B shear; and (4) other developments in gyrokinetic theory and simulation.

- Authors:

- Publication Date:

- Research Org.:
- Princeton Plasma Physics Lab., NJ (US)

- Sponsoring Org.:
- USDOE Office of Energy Research (ER) (US)

- OSTI Identifier:
- 13840

- Report Number(s):
- PPPL-3363

AC02-CHO-3073; TRN: US0110806

- DOE Contract Number:
- AC02-76CH03073

- Resource Type:
- Technical Report

- Resource Relation:
- Other Information: PBD: 1 Oct 1999

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ROTATION; SHEAR; COMPUTERIZED SIMULATION; TURBULENCE; PLASMA INSTABILITY; THREE-DIMENSIONAL CALCULATIONS; TOROIDAL CONFIGURATION

### Citation Formats

```
Krommes, J A, Chance, M S, Hahm, T S, Lin, Z, and et al.
```*Numerical and Theoretical Studies of Turbulence and Transport with E x B Shear Flows*. United States: N. p., 1999.
Web. doi:10.2172/13840.

```
Krommes, J A, Chance, M S, Hahm, T S, Lin, Z, & et al.
```*Numerical and Theoretical Studies of Turbulence and Transport with E x B Shear Flows*. United States. doi:10.2172/13840.

```
Krommes, J A, Chance, M S, Hahm, T S, Lin, Z, and et al. Fri .
"Numerical and Theoretical Studies of Turbulence and Transport with E x B Shear Flows". United States. doi:10.2172/13840. https://www.osti.gov/servlets/purl/13840.
```

```
@article{osti_13840,
```

title = {Numerical and Theoretical Studies of Turbulence and Transport with E x B Shear Flows},

author = {Krommes, J A and Chance, M S and Hahm, T S and Lin, Z and et al},

abstractNote = {This paper reports: (1) substantial transport reduction by turbulence-driven E x B flows observed in 3D nonlinear gyrokinetic simulations of microturbulence in magnetically-confined toroidal plasmas; (2) analytical derivation of the effective shearing rate for the time-dependent E x B flow; (3) interpretation of experimental data using linear gyrokinetic microinstability rotation models of E x B shear; and (4) other developments in gyrokinetic theory and simulation.},

doi = {10.2172/13840},

journal = {},

number = ,

volume = ,

place = {United States},

year = {1999},

month = {10}

}

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