Studies of Reynolds stress and the turbulent generation of edge poloidal flows on the HL-2A tokamak
Abstract
Several new results on the physics linking edge poloidal flows to turbulent momentum transport are reported. These are based on experiments on the HL-2A tokamak. Significant deviation from the neoclassical prediction for mean poloidal flow in Ohmic and electron cyclotron resonance heating (ECRH) heated L-mode discharges is derived from direct measurement of the turbulent Reynolds stress. The deviation increases prominently with ECRH power. The turbulent poloidal viscosity is synthesized from fluctuation data, and is found to be comparable to the turbulent particle diffusivity. The intrinsic poloidal torque characterized by the divergence of the non-diffusive residual stress is deduced from synthesis for the first time in a tokamak plasma. Experimental evidence which demonstrates the dynamics of spectral symmetry breaking in drift wave turbulence is in good agreement with the development of the poloidal torque. Finally, taken together, these results elucidate the connections between power injection, turbulence development, pressure gradient and residual stress from symmetry breaking.
- Authors:
-
[1];
[2];
[1];
[1];
- Southwestern Inst. of Physics, Chengdu (China)
- Univ. of California, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Natural Science Foundation of China (NNSFC)
- Contributing Org.:
- HL-2A Team
- OSTI Identifier:
- 1558406
- Grant/Contract Number:
- FG02-04ER54738; 1575055; 11875124; 11705052; U1867222; 2015GB104003; 2015GB120002
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Fusion
- Additional Journal Information:
- Journal Volume: 59; Journal Issue: 10; Journal ID: ISSN 0029-5515
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; tokamak, turbulent transport, poloidal flows, Langmuir probe
Citation Formats
Long, T., Diamond, P. H., Xu, M., Ke, R., Nie, L., Li, B., Wang, Z. H., Xu, J. Q., and Duan, X. R. Studies of Reynolds stress and the turbulent generation of edge poloidal flows on the HL-2A tokamak. United States: N. p., 2019.
Web. doi:10.1088/1741-4326/ab33cf.
Long, T., Diamond, P. H., Xu, M., Ke, R., Nie, L., Li, B., Wang, Z. H., Xu, J. Q., & Duan, X. R. Studies of Reynolds stress and the turbulent generation of edge poloidal flows on the HL-2A tokamak. United States. doi:10.1088/1741-4326/ab33cf.
Long, T., Diamond, P. H., Xu, M., Ke, R., Nie, L., Li, B., Wang, Z. H., Xu, J. Q., and Duan, X. R. Mon .
"Studies of Reynolds stress and the turbulent generation of edge poloidal flows on the HL-2A tokamak". United States. doi:10.1088/1741-4326/ab33cf. https://www.osti.gov/servlets/purl/1558406.
@article{osti_1558406,
title = {Studies of Reynolds stress and the turbulent generation of edge poloidal flows on the HL-2A tokamak},
author = {Long, T. and Diamond, P. H. and Xu, M. and Ke, R. and Nie, L. and Li, B. and Wang, Z. H. and Xu, J. Q. and Duan, X. R.},
abstractNote = {Several new results on the physics linking edge poloidal flows to turbulent momentum transport are reported. These are based on experiments on the HL-2A tokamak. Significant deviation from the neoclassical prediction for mean poloidal flow in Ohmic and electron cyclotron resonance heating (ECRH) heated L-mode discharges is derived from direct measurement of the turbulent Reynolds stress. The deviation increases prominently with ECRH power. The turbulent poloidal viscosity is synthesized from fluctuation data, and is found to be comparable to the turbulent particle diffusivity. The intrinsic poloidal torque characterized by the divergence of the non-diffusive residual stress is deduced from synthesis for the first time in a tokamak plasma. Experimental evidence which demonstrates the dynamics of spectral symmetry breaking in drift wave turbulence is in good agreement with the development of the poloidal torque. Finally, taken together, these results elucidate the connections between power injection, turbulence development, pressure gradient and residual stress from symmetry breaking.},
doi = {10.1088/1741-4326/ab33cf},
journal = {Nuclear Fusion},
number = 10,
volume = 59,
place = {United States},
year = {2019},
month = {8}
}
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Works referenced in this record:
Observation of the Confinement Bifurcation Triggered by a Turbulence-Driven Shear Flow in a Tokamak Plasma
journal, March 2014
- Yan, Z.; McKee, G. R.; Fonck, R.
- Physical Review Letters, Vol. 112, Issue 12
Edge shear flows and particle transport near the density limit of the HL-2A tokamak
journal, December 2017
- Hong, R.; Tynan, G. R.; Diamond, P. H.
- Nuclear Fusion, Vol. 58, Issue 1
Understanding and predicting profile structure and parametric scaling of intrinsic rotation
journal, September 2017
- Wang, W. X.; Grierson, B. A.; Ethier, S.
- Physics of Plasmas, Vol. 24, Issue 9
Statistical analysis of the turbulent Reynolds stress and its link to the shear flow generation in a cylindrical laboratory plasma device
journal, September 2008
- Yan, Z.; Yu, J. H.; Holland, C.
- Physics of Plasmas, Vol. 15, Issue 9
Spatial redistribution of turbulent and mean kinetic energy
journal, January 2012
- Manz, P.; Xu, M.; Fedorczak, N.
- Physics of Plasmas, Vol. 19, Issue 1
Tracing the Pathway from Drift-Wave Turbulence with Broken Symmetry to the Production of Sheared Axial Mean Flow
journal, May 2018
- Hong, R.; Li, J. C.; Chakraborty Thakur, S.
- Physical Review Letters, Vol. 120, Issue 20
Turbulent-driven low-frequency sheared E × B flows as the trigger for the H-mode transition
journal, July 2013
- Tynan, G. R.; Xu, M.; Diamond, P. H.
- Nuclear Fusion, Vol. 53, Issue 7
Experimental Investigation of the Role of Fluid Turbulent Stresses and Edge Plasma Flows for Intrinsic Rotation Generation in DIII-D -Mode Plasmas
journal, March 2011
- Müller, S. H.; Boedo, J. A.; Burrell, K. H.
- Physical Review Letters, Vol. 106, Issue 11
Intrinsic rotation and electric field shear
journal, April 2007
- Gürcan, Ö. D.; Diamond, P. H.; Hahm, T. S.
- Physics of Plasmas, Vol. 14, Issue 4
Gyrokinetic simulation of momentum transport with residual stress from diamagnetic level velocity shears
journal, April 2011
- Waltz, R. E.; Staebler, G. M.; Solomon, W. M.
- Physics of Plasmas, Vol. 18, Issue 4
Dynamics of intrinsic axial flows in unsheared, uniform magnetic fields
journal, May 2016
- Li, J. C.; Diamond, P. H.; Xu, X. Q.
- Physics of Plasmas, Vol. 23, Issue 5
Neoclassical poloidal and toroidal rotation in tokamaks
journal, August 1991
- Kim, Y. B.; Diamond, P. H.; Groebner, R. J.
- Physics of Fluids B: Plasma Physics, Vol. 3, Issue 8
Neoclassical transport of impurities in tokamak plasmas
journal, September 1981
- Hirshman, S. P.; Sigmar, D. J.
- Nuclear Fusion, Vol. 21, Issue 9
Characterization of intrinsic rotation drive on DIII-D
journal, May 2011
- Solomon, W. M.; Burrell, K. H.; deGrassie, J. S.
- Nuclear Fusion, Vol. 51, Issue 7
Extension and comparison of neoclassical models for poloidal rotation in tokamaks
journal, January 2008
- Stacey, W. M.
- Physics of Plasmas, Vol. 15, Issue 1
Rotation characteristics of main ions and impurity ions in H -mode tokamak plasma
journal, April 1994
- Kim, J.; Burrell, K. H.; Gohil, P.
- Physical Review Letters, Vol. 72, Issue 14
Toroidal Symmetry of the Geodesic Acoustic Mode Zonal Flow in a Tokamak Plasma
journal, June 2006
- Zhao, K. J.; Lan, T.; Dong, J. Q.
- Physical Review Letters, Vol. 96, Issue 25
Rotation of a toroidally confined, collisional plasma
journal, January 1974
- Hazeltine, R. D.
- Physics of Fluids, Vol. 17, Issue 5
Experimental evidence of coupling between sheared-flow development and an increase in the level of turbulence in the stellarator
journal, December 2004
- Hidalgo, C.; Pedrosa, M. A.; García, L.
- Physical Review E, Vol. 70, Issue 6
Pedestal dynamics across low to high confinement regime in the HL-2A tokamak
journal, February 2018
- Liang, A. S.; Zhong, W. L.; Zou, X. L.
- Physics of Plasmas, Vol. 25, Issue 2
Theory of mean poloidal flow generation by turbulence
journal, July 1991
- Diamond, P. H.; Kim, Y. ‐B.
- Physics of Fluids B: Plasma Physics, Vol. 3, Issue 7
Intrinsic Rotation from a Residual Stress at the Boundary of a Cylindrical Laboratory Plasma
journal, February 2010
- Yan, Z.; Xu, M.; Diamond, P. H.
- Physical Review Letters, Vol. 104, Issue 6
Development of a passive visible spectroscopic diagnostic on HL-2A tokamak
journal, June 2019
- Liu, L.; Yu, D. L.; Chen, W. J.
- Fusion Engineering and Design, Vol. 143
From Phase Locking to Phase Slips: A Mechanism for a Quiescent mode
journal, April 2015
- Guo, Z. B.; Diamond, P. H.
- Physical Review Letters, Vol. 114, Issue 14
Bicoherence during confinement transitions in the TJ-II stellarator
journal, September 2008
- van Milligen, B. Ph.; Kalhoff, T.; Pedrosa, M. A.
- Nuclear Fusion, Vol. 48, Issue 11
Generation of a Sheared Plasma Rotation by Emission, Propagation, and Absorption of Drift Wave Packets
journal, July 2011
- Xu, M.; Tynan, G. R.; Diamond, P. H.
- Physical Review Letters, Vol. 107, Issue 5
Self-Regulation of Flow Shear via Plasma Turbulence
journal, April 2005
- Vianello, N.; Spada, E.; Antoni, V.
- Physical Review Letters, Vol. 94, Issue 13
Experimental evidence for the key role of the ion heat channel in the physics of the L–H transition
journal, May 2014
- Ryter, F.; Barrera Orte, L.; Kurzan, B.
- Nuclear Fusion, Vol. 54, Issue 8
Physics of sheared flow development in the boundary of fusion plasmas
journal, March 2006
- Hidalgo, C.; Pedrosa, M. A.; Sánchez, E.
- Plasma Physics and Controlled Fusion, Vol. 48, Issue 4
Bifurcation theory of poloidal rotation in tokamaks: A model for L-H transition
journal, November 1989
- Shaing, K.; Crume, E.
- Physical Review Letters, Vol. 63, Issue 21
Toroidal Momentum Pinch Velocity due to the Coriolis Drift Effect on Small Scale Instabilities in a Toroidal Plasma
journal, June 2007
- Peeters, A. G.; Angioni, C.; Strintzi, D.
- Physical Review Letters, Vol. 98, Issue 26
Summary of experimental progress and suggestions for future work (H mode confinement)
journal, July 1994
- Burrell, K. H.
- Plasma Physics and Controlled Fusion, Vol. 36, Issue 7A
On the efficiency of intrinsic rotation generation in tokamaks
journal, October 2010
- Kosuga, Y.; Diamond, P. H.; Gürcan, Ö. D.
- Physics of Plasmas, Vol. 17, Issue 10
Influence of sheared poloidal rotation on edge turbulence
journal, January 1990
- Biglari, H.; Diamond, P. H.; Terry, P. W.
- Physics of Fluids B: Plasma Physics, Vol. 2, Issue 1
Generation of sheared poloidal flows via Reynolds stress and transport barrier physics
journal, May 2000
- Hidalgo, C.; Pedrosa, M. A.; Sánchez, E.
- Plasma Physics and Controlled Fusion, Vol. 42, Issue 5A
Neoclassical calculation of poloidal rotation and poloidal density asymmetries in tokamaks
journal, September 2002
- Stacey, Weston M.
- Physics of Plasmas, Vol. 9, Issue 9
Effects of E×B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices
journal, May 1997
- Burrell, K. H.
- Physics of Plasmas, Vol. 4, Issue 5
Experimental Evidence for the Intimate Interaction among Sheared Flows, Eddy Structures, Reynolds Stress, and Zonal Flows across a Transition to Improved Confinement
journal, August 2013
- Shesterikov, I.; Xu, Y.; Tynan, G. R.
- Physical Review Letters, Vol. 111, Issue 5
Dynamics of zonal shear collapse with hydrodynamic electrons
journal, June 2018
- Hajjar, R. J.; Diamond, P. H.; Malkov, M. A.
- Physics of Plasmas, Vol. 25, Issue 6
Physics of non-diffusive turbulent transport of momentum and the origins of spontaneous rotation in tokamaks
journal, March 2009
- Diamond, P. H.; McDevitt, C. J.; Gürcan, Ö. D.
- Nuclear Fusion, Vol. 49, Issue 4
Study of Plasma MHD Equilibrium in HL-2A Tokamak
journal, July 2006
- Hongda, He; Jinhua, Zhang; Jiaqi, Dong
- Plasma Science and Technology, Vol. 8, Issue 4
Role of Turbulence on Edge Momentum Redistribution in the TJ-II Stellarator
journal, April 2006
- Gonçalves, B.; Hidalgo, C.; Pedrosa, M. A.
- Physical Review Letters, Vol. 96, Issue 14
Experimental test of the neoclassical theory of impurity poloidal rotation in tokamaks
journal, May 2006
- Solomon, W. M.; Burrell, K. H.; Andre, R.
- Physics of Plasmas, Vol. 13, Issue 5
Poloidal rotation and its relation to the potential vorticity flux
journal, November 2010
- McDevitt, C. J.; Diamond, P. H.; Gürcan, Ö. D.
- Physics of Plasmas, Vol. 17, Issue 11
Main-Ion Intrinsic Toroidal Rotation Profile Driven by Residual Stress Torque from Ion Temperature Gradient Turbulence in the DIII-D Tokamak
journal, January 2017
- Grierson, B. A.; Wang, W. X.; Ethier, S.
- Physical Review Letters, Vol. 118, Issue 1
Poloidal Rotation in TFTR Reversed Shear Plasmas
journal, August 1998
- Bell, R. E.; Levinton, F. M.; Batha, S. H.
- Physical Review Letters, Vol. 81, Issue 7
Testing neoclassical and turbulent effects on poloidal rotation in the core of DIII-D
journal, July 2014
- Chrystal, C.; Burrell, K. H.; Grierson, B. A.
- Physics of Plasmas, Vol. 21, Issue 7
Transport of parallel momentum by collisionless drift wave turbulence
journal, January 2008
- Diamond, P. H.; McDevitt, C. J.; Gürcan, Ö. D.
- Physics of Plasmas, Vol. 15, Issue 1
Works referencing / citing this record:
Edge turbulence evolution and intermittency development near the density limit on the HL-2A tokamak
journal, September 2019
- Wang, L.; Tynan, G. R.; Hong, R.
- Physics of Plasmas, Vol. 26, Issue 9